Nortel Networks NN43001-504 manual

Nor tel Communication Ser v er 1000 WLAN IP T elephon y Installation and Commissioning NN43001-504 .[...]

Document status: Standard Document version: 01.02 Document date: 15 June 2007 Copyright © 2004-2007, Nor tel Netw orks All Rights Reser v ed. Sourced in Canada The inf or mation in this document is subject to change without notice . The statements, configur ations, technical data, and recommendations in this document are believ ed to be accurate [...]

3 Re vision histor y June 2007 Standard 01.02. This document is up-issued to reflect a change in the re vision histor y . May 2007 Standard 01.01. This document is issued to suppor t Nor tel Communication Ser ver 1000 Release 5.0. This document contains information pre viously contained in the f ollowing legacy document, no w retired: WLAN IP T el[...]

4 Revision history Nor tel Communication Server 1000 WLAN IP T elephony Installation and Commissioning NN43001-504 01.02 Standard Release 5.0 15 June 2007 Copyright © 2004-2007, Nor tel Networks .[...]

5 Contents New in this release 13 Feature description 13 Other changes 13 Multicast 14 Zones for wireless handsets 14 Open and use the Admin men u on the handset 14 Admin menu options for the WLAN Handset 6120/6140 14 Download the software 14 Feature prog ramming for the WLAN Handset 6120/6140 14 T est the wireless handsets 14 Run Site Sur ve y for[...]

6 Contents Components 26 Language 27 Licenses 27 Wi-Fi Multimedia 27 Wired Equivalent Priv acy 28 Wi-Fi Protected Access 28 Wi-Fi Protected Access2 28 Vir tual Private Network 28 Push-to-talk feature 28 T e xt-messaging feature 28 Loud noise environments 29 WLAN IP T elephony Manager 2245 29 WLAN Application Gatewa y 2246 30 Access P oints 30 Hands[...]

Contents 7 Communication Ser v er 1000 T elephony Manager 54 Zones 54 Other network design considerations 55 Access P oint interference 56 SSID options and limitations 57 Lay er 3 implementation 58 WLAN IP T elephony Manager 2245 planning 59 Installation requirements 59 Capacities 59 WLAN IP T elephony Manager 2245 g roups 60 Gatew ay and timing fu[...]

8 Contents TFTP Ser v er location in a NA T environment 89 WLAN Application Gatewa y 2246 in a NA T environment 89 CS 1000 features 90 IP Phone 2004 features 91 Installation 93 Required materials 93 Supplied equipment 94 Preinstallation checklist 94 WLAN IP T elephony Manager 2245 installation tasks 94 About the front panel 94 W all-mount 95 Rack-m[...]

Contents 9 Update software on the WLAN Application Gatewa y 2246 115 Update software on a wireless handset 115 Software update (v ersion 97.070) for the WLAN Handsets 2210/2211/2212 116 Displays 117 Wireless handset download messages 117 Normal download messages 117 Download f ailure or recovery messages 118 T roubleshooting 119 T roub leshooting t[...]

10 Contents Continuing configuration through T elnet 160 Connecting through T elnet 160 Configuring the T elephone Line 161 Deleting a handset 162 Searching for a handset 162 Feature prog ramming 163 Setting or changing a password 164 System status 164 Network status 165 Software v ersions 166 T elephone line status 167 Cer tification testing 16[...]

Contents 11 Timing information 199 Diagnostic T ools 200 Run Site Sur ve y for the WLAN Handset 2210/2211/2212 200 Run Site Sur ve y for the WLAN Handset 6120/6140 201 Diagnostics Mode 204 Syslog Mode 207 Data capture 213 Questions 213 Data checklist 213 Site-data required for the capture analysis 214 Syslog capture configuration 215 Signaling Ser[...]

12 Contents Procedure 21 Searching for a handset 162 Procedure 22 Programming a feature 163 Procedure 23 Setting or changing a passw ord 164 Procedure 24 Viewing system status 165 Procedure 25 Cer tifying wireless handsets on an existing system 168 Procedure 26 T ransferring the software using FTP 169 Procedure 27 Loading software updates 170 Proce[...]

13 Ne w in this release The f ollowing sections detail what is new in WLAN IP T elephony Installation and Commissioning (NN43001-504) for CS 1000, Release 5.0. Feature description Suppor t is provided f or the WLAN Handset 6120/6140 through the addition of the Nor tel WLAN Handset 6100 Series Administration T ool Software. F or more information abo[...]

14 New in this release Multicast The WLAN Handset 6140 uses IP multicast addresses. Zones for wireless handsets The WLAN Handset 6120/6140 is added to the designated wireless handset types. Open and use the Admin menu on the handset The procedures f or opening and using the Admin menu on the WLAN Handset 6120/6140 and ho w to mak e an alphanumeric [...]

Other changes 15 Wireless handset status messages The new messages are: • Error! • Ser ver Una vailab le. Restar ting... Nor tel Communication Server 1000 WLAN IP T elephony Installation and Commissioning NN43001-504 01.02 Standard Release 5.0 15 June 2007 Copyright © 2004-2007, Nor tel Networks .[...]

16 New in this release Nor tel Communication Server 1000 WLAN IP T elephony Installation and Commissioning NN43001-504 01.02 Standard Release 5.0 15 June 2007 Copyright © 2004-2007, Nor tel Networks .[...]

17 Ho w to g et help This chapter explains how to get help for Nor tel products and ser vices. Getting help from the Nor tel W eb site The best wa y to get technical suppor t f or Nor tel products is from the Nor tel T echnical Suppor t W eb site: w ww . nor tel.com/suppor t This site provides access to software, documentation, b ulletins, and tool[...]

18 How to get help www .nor tel.com/erc Getting help through a Nor tel distributor or reseller If you purchased a service contract f or your Nor tel product from a distributor or author ized reseller , contact the technical suppor t staff for that distributor or reseller . Nor tel Communication Server 1000 WLAN IP T elephony Installation and Commis[...]

19 Overview This chapter contains information about the follo wing topics: • "Subject" (page 19) • "Applicable systems" (page 20) • "Conv entions" (page 21) • "Related inf or mation" (page 21) • "Declaration of conf or mity" (page 22) • "Shielded cable" (page 22) • "Wire[...]

20 Overview • Nor tel WLAN Handset 2211 • Nor tel WLAN Handset 2212 • Nor tel WLAN Handset 6120 • Nor tel WLAN Handset 6140 Note about legacy pr oducts and releases This NTP contains information about systems, components, and features that are compatib le with Nor tel Communication Ser ver 1000 Release 5.0 software. F or more inf or mation [...]

Resources 21 Con ventions In this document, the follo wing systems are ref erred to generically as system: • Communication Ser ver 1000M (CS 1000M) • Communication Ser v er 1000E (CS 1000E) The follo wing systems are referred to generically as large systems: • Communication Ser ver 1000M Half Group (CS 1000M HG) • Communication Server 1000M[...]

22 Overview Declaration of conf ormity The WLAN IP T elephon y Manager 2245 and WLAN Application Gate wa y 2246 hav e been found to comply with the f ollowing: • FCC P ar t 15 Class A - Radiate and Conducted Emissions requirements • CISPR 22 Class A - Radiate and Conducted Emissions requirements • ICES 003 Class A - Radiate and Conducted Emis[...]

Wireless telephone network descr iption 23 • T r ivial File T r ansfer Protocol (TFTP) ser v er • Firew all • Nor tel WLAN Handset 2210/2211/2212, and Nor tel WLAN Handset 6120/6140 • Nor tel WLAN IP T elephony Manager 2245 • Nor tel WLAN Application Gatew ay 2246 (optional) • Access P oint (AP)—one or more as required b y the site Fi[...]

24 Overview Figure 1 T ypical wireless telephone network configuration Call Server The Call Ser ver can be the Call Ser ver of any Nor tel Communication Ser ver (CS) 1000 system running CS 1000 Release 5.0 software . Nor tel Communication Server 1000 WLAN IP T elephony Installation and Commissioning NN43001-504 01.02 Standard Release 5.0 15 June 2[...]

WLAN Handset 2210/2211/2212 and WLAN Handset 6120/6140 25 DHCP Server The e xisting DHCP Ser ver can be on either side of the firewall, according to the site administrator’s preference . The DHCP ser ver is optional if the wireless handsets and WLAN IP T elephon y Manager 2245 are statically configured. DHCP options If you use a DHCP Ser ver , [...]

26 Overview Emplo yees carr y wireless handsets to make and receive calls as they mov e throughout the building. The handsets are used only on the premises; the y are not cellular phones. The handsets communicate with the CS 1000 and with the WLAN IP T elephony Manager 2245. J ust like wired telephones, the wireless handsets receive calls directly [...]

WLAN Handset 2210/2211/2212 and WLAN Handset 6120/6140 27 • Nor tel WLAN Handset 2200 Ser ies Configuration Cradle—required hardware (serial cable included) The WLAN Handset 6100 Series offers the follo wing components for local configuration: • Nor tel WLAN Handset 6100 Series Administration T ool Software—software only • Nor tel WLAN [...]

28 Overview When WMM is used, all voice traffic originating from the wireless handset is assigned the WMM V oice Access Categor y , making it the highest prior ity application. If the wireless network suppor ts WMM, the handsets enable WMM suppor t automatically; otherwise, SpectraLink V oice Pr ioritization (SVP) is used. Wired Equivalent Priv ac[...]

WLAN IP T elephony Manager 2245 29 Interf ace (OAI) messaging protocol. The WLAN Application Gatew ay 2246 f orwards the messages to the WLAN IP T elephony Manager , which encapsulates the message f or delivery to the handset. If text-messaging functions are programmed, the handset can receive te xt messages. While y ou access te xt messages, the h[...]

30 Overview T elephon y Manager 2245 model numbers and capacities" (page 30) .I f greater capacity is required, multiple units can be used in a master-slav e arrangement. Ta b l e 2 WLAN T elephon y Manager 2245 model numbers and capacities Model number Maximum number users NTTQ60BA 10 simultaneous users NTTQ60CA 20 simultaneous users NTTQ60AA[...]

Handset switcho ver 31 aff ect the cover age area and capacity of the wireless system. T ypically , the requirements f or use of handsets are similar to that of other wireless data de vices. The APs must be either SVP-compliant or WMM-compliant to suppor t QoS. F or a list of suppor ted APs, see Appendix "Compatible Access P oints" (page [...]

32 Overview Nor tel Communication Server 1000 WLAN IP T elephony Installation and Commissioning NN43001-504 01.02 Standard Release 5.0 15 June 2007 Copyright © 2004-2007, Nor tel Networks .[...]

33 Planning This chapter contains information about the follo wing topics: • "Challenges of integrating voice applications" (page 33) • "DHCP ser ver planning" (page 36) • "TFTP Ser ver planning" (page 38) • "Syslog Ser ver planning" (page 40) • "Access point planning" (page 40) • "[...]

34 Planning • rate scaling and variable capacity • power adjustments and variable capacity • Quality of Ser vice (QoS) High overhead of 802.11 Unlike many other 802.n standards, 802.11 has a ver y high amount of ov erhead associated with transmitting a pack et. T o compare an 802.3 network with an 802.11 network, the difference in overhead f [...]

Challenges of integrating v oice applications 35 P ower adjustments and variab le capacity A WLAN has dynamic mechanisms in place f or adjusting channels, adjusting power , and filling cov erage holes, all in response to changes in the Radio F requency (RF) environment. All of these mechanisms present challenges to the engineering of v oice networ[...]

36 Planning F or e xample, if a data device does seiz e the medium, it can send a 1500-byte fr ame at the lowest data rate (if it is f ar awa y from the AP), and fur ther delay v oice frames. In addition, sev eral data de vices contending for the medium can each, in tur n, send large frames bef ore the voice de vice gained access to the medium. Wit[...]

DHCP server planning 37 handset perf or ms a DNS lookup of the name SLNKSVP2, if Options 6 (DNS Ser ver) and 15 (Domain Name) are configured. • DHCP Option 152. If an optional WLAN Application Gatewa y 2246 is used in the system, its IP address can be specified with this option. Each wireless handset effectiv ely uses two IP addresses in the wi[...]

38 Planning Figure 2 Sample DHCP reser v ation showing assigned parameters Another use f or the DHCP ser ver is to mak e code upgrades to the handset easier . T o pre vent handsets from checking f or code upgr ades, assign the value of 255.255.255.255 f or the TFTP ser ver address . A problem can arise for handset users who tra vel. For e xample, t[...]

TFTP Server planning 39 Only one TFTP ser ver is needed in the network, and it need not be colocated with the handsets or the WLAN IP T elephony Manager 2245. There is a client-dependent aspect to how the handsets function with the TFTP ser ver . Ho w well a ser ver works with the handsets can var y between code versions on the handset. Y ou can co[...]

40 Planning Nor tel has tested the f ollowing TFTP ser v ers. The y are listed in order of pref erence. • Nor tel TFTP ser ver (ONMS application) • 3COM TFTP • PumpkinTFTP Syslog Server planning A Syslog Ser v er listens for incoming syslog messages on UDP por t 514 and then processes the messages according to local administr ative procedures[...]

Access point planning 41 A site sur v ey is critical to designing and implementing a wireless LAN. The site sur ve y is used to deter mine the number of APs needed to suppor t the wireless handset users and to determine the best placement of the APs. Diff erent AP vendors pro vide diff erent tools to do this. Site survey T o conduct a site surve y [...]

42 Planning the Site Sur ve y mode displa ys signals only from APs on the same Extended Ser vice Set ID (ESSID), check f or signals from APs using all ESSIDs to av oid channel overlap . Figure 3 Frequencies used by b radio • Wireless handset range—Wireless LAN coverage m ust be av ailable where ver wireless handsets are used. Although the typic[...]

Access point planning 43 — 15% of the av ailable bandwidth per call for 1 Mbs operation. Note: These requirements mean that areas with a high-use density must receiv e RF cov erage at the highest data rate of operation. • LAN bandwidth—Estimate anticipated peak call v olume to ensure that enough bandwidth is availab le to handle the network t[...]

44 Planning cases, a room originally built f or a specific pur pose, such as a r adiology lab , can be conv er ted into something completely diff erent, such as a conf erence room. The blueprint can also show areas proposed for future building e xpansion. • Mark possible wireless handset usage locations on the blueprint and ref er to the mar k e[...]

Access point planning 45 Figure 4 Sample AP placement diagram for b radio Solving covera g e issues T o resolv e cover age issues, add and relocate APs. Solving overlap issues T o resolv e overlap issues, reassign channels to the APs or relocate the APs. Lik e channels require 15–20dBm separation. See Figure 5 "b radio assignment" (page[...]

46 Planning Figure 5 b radio assignment F or more information about overlap , see the AP vendor documentation. Network planning Y ou must ensure that all connections and interfaces f or the IP T elephony network are configured as full-duplex. Duplex mismatches anywhere on the WLAN can cause the wireless IP T elephony system not to function nor mal[...]

Network management 47 — Necessar y traffic f or instance DHCP must be allo wed, while all other traffic is denied. Sample Access Control List The f ollowing is a sample A CL f or a voice VLAN named VLAN120. set security acl ip SpectraLink permit udp 0.0.0.0 255.255.255.255 eq 68 0.0.0.0 255.255.255.255 eq 67 set security acl ip SpectraLink perm[...]

48 Planning Assessment through a WLAN site sur vey T echnical suppor t f or V oWLAN is contingent on customers perf or ming a site sur ve y of the WLAN. Currently , Nor tel recommends the use of the Ekahau Site Sur vey tool to verify the network deplo yment, although other site sur ve y tools are acceptable . The Ekahau product runs on a PC and use[...]

Network management 49 Both location-solution types use a f or m of triangulation to compute the location of the device . Depending on the pow er le vel of the AP , it can sometimes hear devices that it cannot transmit to . These f actors combined create the follo wing two scenarios: • It is difficult to calibrate netw or k-based solutions by usi[...]

50 Planning noticeable when a v oice call trav erses such a link. Vivinet Assessor is e xtremely useful for identifying the symptoms of issues and fixing such problem areas in the network long before the customer places the first call. Monitoring and repor ting with Enterprise Network Monitoring System Enter prise Network Monitor ing System (ENMS[...]

Network management 51 Figure 6 ENMS 10.5 IPSM overview After you clic k on a specific IP Phone, the panel in the low er r ight por tion of the screen displays details automatically , such as the CS 1000 system, with which the IP Phone is registered. Y ou can then right-click on the phone to show a data netw or k path trace g raphically , as shown [...]

52 Planning Figure 7 ENMS 10.5 IPSM conver g ence view ENMS can provide down to physical slot por t connectivity for the wired network. This topology data is e xtremely useful when shown in the Conv erged View of a P ath T race . Y ou can set the displa y to refresh periodically to display the latest inf or mation about IP address changes. With R T[...]

Network management 53 Call trac king is another feature that is not specifically related to QoS monitoring or f ault monitoring, but that is impor tant to solution manageability . With this f eature, you can: • trac k calls that fit defined profiles and collect data for later trend analysis • monitor individual e xtensions in real time • [...]

54 Planning The aler t from Vivinet AppManager activates Vivinet Diagnostics , which traces the path of the call, collects diagnostic inf or mation, and can perform root cause analysis. Y ou can sav e the results for fur ther analysis and action. F or an e xample, see Figure 8 "NetiQ Vivinet Diagnostics example" (page 54) . Figure 8 NetiQ[...]

Other network design considerations 55 Other network design considerations WLAN Handsets 2210/2211/2212 are 802.11b-only de vices and the WLAN Handsets 6120/6140 are 802.11b, 802.11g and 802.11a devices , which creates challenging choices for network deplo yments. The f ollowing list describes some of the points to consider when deter mining networ[...]

56 Planning channels, which is detr imental to voice de vices. As a general policy , f or large amounts of data, use 802.11a f or data and 802.11b for v oice, b ut leav e 802.11g disabled. Alternately , if there are fe w 802.11b/g data de vices and the WLAN is to be used primar ily for v oice, consider enabling 802.11g suppor t. The goal is to care[...]

Other network design considerations 57 Example The channel reuse factor f or 802.11b networks is fix ed at three (three nonov er lapping channels in the 2.4 GHz range), corresponding to channels 1, 6, and 11. The transmit po wer is fix ed at 50 mW , which estab lishes the radius of the cell. Now the eff ects of cell size, based on the other fixe[...]

58 Planning Lay er 3 implementation Where possible, simplify the number of subnets that are used f or client de vices. Even in a Distributed Campus architecture , you can ha ve a f e w central subnets f or clients. As a general rule, Nor tel recommends that wired or wireless IP phones be placed in a separate VLAN (subnet) from data de vices. This p[...]

WLAN IP T elephony Manager 2245 planning 59 industr y . So to mitigate risks, you can use a firewall to bloc k all but the por ts needed for IP T elephon y . This practice becomes comple x and costly when multiplied by a number of subnets. A more cost-eff ective alternative to implementing a fire wall is to assign private addresses to the handset[...]

60 Planning In any subnet where wireless handsets are used, each subnet must ha ve one or more WLAN IP T elephony Managers 2245. A WLAN IP T elephony Manager 2245 group on a subnet consists of one or more WLAN IP T elephon y Managers 2245 and their associated wireless handsets. Only one master WLAN IP T elephony Manager 2245 can be on a subnet. WLA[...]

WLAN IP T elephony Manager 2245 planning 61 T ab le 4 "Multiple WLAN IP T elephony Manager 2245-80 capacities" (page 61) lists the call capacities f or WLAN IP T elephon y Manager 2245-80 groups. T ab le 5 "Multiple WLAN IP T elephony Manager 2245-10 and 2245-20 capacities" (page 62) lists the handset capacities for WLAN IP T el[...]

62 Planning Ta b l e 5 Multiple WLAN IP T elephony Manager 2245-10 and 2245-20 capacities Number of WLAN IP Telephony Managers 2245 Number of handsets WLAN IP Telephony Manager 2245-10 Number of handsets WLAN IP Telephony Manager 2245-20 11 0 2 0 22 0 4 0 33 0 not applicable 44 0 not applicable F or example , if there are two subnets for handsets i[...]

WLAN IP T elephony Manager 2245 planning 63 The handsets encapsulate their voice pa yloads in SVP f or QoS . The handsets fur ther synchronize comm unications, so that the handsets are able to a void collisions with each other more effectiv ely than the usual 802.11 collision av oidance mechanisms. Each handset maintains a list of up to f our APs a[...]

64 Planning T o gain this type of predictability , engineer the maximum calls per AP based on 1 Mb/2 Mb rate selections in the handsets, configure that number as the call limit on the WLAN IP T elephon y Manager 2245, and then configure the actual rate of the handsets (on the WLAN IP T elephony Manager 2245) to A utomatic. That wa y , the WLAN is[...]

Placement guidelines for the WLAN IP T elephony Manager 2245 65 returns. If the wireless handset is configured to use ESSID of the ne w WLAN, it automatically discov ers the ESSID of the APs operating in broadcast mode. T ab le 6 "Roaming and handover capabilities summar y" (page 65) summarizes the capabilities. Ta b l e 6 Roaming and ha[...]

66 Planning Bef ore adding the WLAN IP T elephony Manager 2245 to the netw or k: • Ensure that the APs used in the network are V oice Interoperability f or Enter pr ise Wireless (VIEW) cer tified. F or more information, go to w ww .spectralink.com/consumer/par tners/view_cer tification.jsp . • Ensure that the handsets are running Nor tel Phas[...]

Placement guidelines for the WLAN IP T elephony Manager 2245 67 T o achie ve e xcellent voice quality , Nor tel recommends using G711 CODEC with the f ollowing configuration: • End-to-end dela y < = 150 ms (one wa y) • P ack et loss < = 0.5% • The maximum jitter buff er f or the handsets set as low as possible. F or more information, s[...]

68 Planning • F or an e xample of an end-to-end delay f or a W AN, see Figure 13 "Example 2: End-to-end delay and pac ket loss f or a W AN" (page 69) . • F or an e xample of an end-to-end dela y f or a LAN to a Public Switched T elephone Network (PSTN), see Figure 14 "Example 3: End-to-end dela y and pack et loss f or a LAN to a [...]

Placement guidelines for the WLAN IP T elephony Manager 2245 69 Figure 13 Example 2: End-to-end delay and packet loss for a W AN Nor tel Communication Server 1000 WLAN IP T elephony Installation and Commissioning NN43001-504 01.02 Standard Release 5.0 15 June 2007 Copyright © 2004-2007, Nor tel Networks .[...]

70 Planning Figure 14 Example 3: End-to-end delay and pac ket loss for a LAN to a PSTN Use the f ollowing tools to measure jitter , dela y and pack et loss: • Ping (to estimate delay and pac ket loss) • Netmeeting (to generate R TP traffic) • Ethernet (to capture and analyze the RTP tr affic) F or more information, see Figure 15 "Measu[...]

Placement guidelines for the WLAN IP T elephony Manager 2245 71 Figure 15 Measuring jitter , delay and packet loss Procedure 1 Measuring jitter , delay , and packet loss Step Action 1 Connect PC 2 to LAN segment C. 2 Obtain the IP address of PC 2. 3 Star t Netmeeting. 4 Connect PC 1 to the LAN on segment B. 5 Ping PC 2 and note the length of the ro[...]

72 Planning —End— F or an example of pack et stream analysis for jitter and pack et loss, see Figure 16 "P ar t 1: Example of analysis of a pack et stream captured between segment A and B" (page 72) and Figure 17 "P ar t 2: Example of analysis of a pack et stream captured between segment A and B" (page 73) . Figure 16 Part 1[...]

WLAN Application Gatewa y 2246 planning 73 Figure 17 Part 2: Example of analysis of a packet stream captured between segment A and B Usually the WLAN IP T elephon y Manager 2245 is placed in the same subnet as WLAN handsets. This was pre viously a r ule, but it is now just a recommendation. The WLAN IP T elephony Manager 2245 sometimes must be plac[...]

74 Planning WLAN IP T elephony Manager 2245 and WLAN Application Gate way 2246 installation requirements Locate the WLAN IP T elephony Manager 2245 and optional WLAN Application Gatewa y 2246 in a space with: • sufficient backboard mounting space and proximity to the LAN access de vice (switched Ethernet switch), Call Ser ver , and power source [...]

Planning worksheets 75 Record the static IP address assignments and store them in a safe place . IP addressing with DHCP A pool of alias IP addresses must be configured on the WLAN IP T elephony Manager 2245 f or the use of the wireless handsets. The use of a 22-bit subnet mask provides IP addresses f or approximately 500 wireless handsets (1024 n[...]

76 Planning WINS Server IP address Workgroup name Syslog Server IP address First alias IP address Last alias IP address Cop y and complete the worksheet from T able 8 "Wireless handset planning worksheet" (page 76) to maintain a configuration record for the handsets. Ta b l e 8 Wireless handset planning worksheet Line * MAC Address * Use[...]

77 System inf ormation This chapter contains information about the follo wing topics: • "Bandwidth management" (page 77) • "Codecs" (page 79) • "Jitter buff er" (page 80) • "RLR and SLR" (page 80) • "R TCP" (page 80) • "Gain adjustment" (page 81) • "Programmab le rings a[...]

78 System information It is good practice to create a Bandwidth Management Zone for each WLAN IP T elephon y Manager 2245 group (one group per subnet) in LD 117. Use the CHG ZDES command to name the zone with the IP address of the master WLAN IP T elephony Manager 2245. => NEW ZONE <zone number> => CHG ZDES <zone number> <Wnnn.[...]

Codecs 79 OR PRT IPDN <subnet of the WLAN IP Telephony Manager 2245 group> Alias IP address Using the DN of a wireless handset, suppor t personnel can obtain the current or most recent alias IP address used b y a wireless handset when it check ed in with the master of a WLAN IP T elephony Manager 2245 group , and subsequently registered with [...]

80 System information 2245 repac kages the voice data to the correct pac ket size. The jitter b uff er is alwa ys configured to 70 ms, and any UNIStim messages that configure the jitter b uffer are ignored. A TTENTION IMPORT ANT! If the wireless handset is registered to the same L TPS as the IP Phones , configure only the subset of codecs suppor[...]

Branch Office 81 Gain adjustment The handsets ignore any UNIStim messages that adjust the loss plan of the wireless handset. Programmab le rings and tones The wireless handsets suppor t aler ting cadences b ut only a single aler ting frequency . The wireless handsets ha ve the same call progress tone capability as the e xisting IP Phones 2004. In/[...]

82 System information F or the MG 1000B , if a wireless handset is registered to the Small System Controller (SSC) in Local mode, the local-mode license inf or mation appears on the wireless handset on the second line of the displa y . Since the maximum number of displa y characters on the wireless handset is 19 characters, the local-mode license i[...]

NA T 83 Note 2: No patch is required f or SRG 1.0 based on BCM 3.7 or SRG50 systems F or more inf or mation about SRG, see Main Office Configuration Guide f or Sur vivab le Remote Gate wa y 50 (NN43001-307) . External Applications Server The Exter nal Applications Ser ver (XAS) applications are not av ailable on the handsets. End-to-end QoS End-t[...]

84 System information NA T T raversal feature The NA T T ra versal f eature is used where the IP Phone (this includes the handsets) is located on the pr ivate side of the NA T router , while the rest of the Ser ver resides on the pub lic side. T o ensure correct deplo yment of the wireless handsets in this type of network configuration, most, if n[...]

NA T 85 Figure 18 VPN design over a La yer 2 network Nor tel Communication Server 1000 WLAN IP T elephony Installation and Commissioning NN43001-504 01.02 Standard Release 5.0 15 June 2007 Copyright © 2004-2007, Nor tel Networks .[...]

86 System information Figure 19 VPN design over a La yer 3 network A TTENTION If the WLAN IP T elephony Manager 2245 is not in the same subnet as the handsets, the handsets do not work. A TTENTION In Figure 18 "VPN design over a La yer 2 network" (page 85) , Figure 19 "VPN design ov er a Lay er 3 network" (page 86) , Figure 20 &[...]

NA T 87 DHCP assignments, the routing requirements on the VPN Router become much more complicated. T o suppor t such a scenario , you must configure static routes on the pub lic interf ace as well as inject those routes into the routing protocol on the private interface . Theref ore, Nor tel recommends that you do not use the netw ork design shown[...]

88 System information Handsets 2210/2211 handsets use the same WLAN IP T elephony Manager as the WLAN Handset 2212 (VPN). This WLAN IP T elephony Manager is on the other (remote) side of the VPN Router from the handsets, that is, over a routed hop . WLAN IP T elephony Mana g er 2245 in a NA T en vironment The IP T elephony Manager 2245 must be in c[...]

NA T 89 Figure 21 Network configuration 3 with Full DHCP Server TFTP Ser ver location in a NA T envir onment The TFTP Ser ver can be located on the pub lic side of the network. In this case, the NA T router (and Wireless Security Switch if deploy ed) can hav e to be configured to allow WLAN Handsets access to the TFTP Ser ver (allow traffic thro[...]

90 System information The WLAN Application Gate way 2246 can be located on the pub lic side of the network as long as traffic is allowed on the correct por ts. This scenario is represented in Figure 21 "Network configuration 3 (with Full DHCP Ser ver)" (page 89) . Alternatively , the WLAN Application Gatewa y 2246 can be placed on the p[...]

IP Phone 2004 features 91 IP Phone 2004 features T ab le 12 "IP Phone 2004 features" (page 91) provides inf or mation about the IP Phone 2004 features f or the handsets. Ta b l e 1 2 IP Phone 2004 features Feature Supported on the WLAN handsets Description Keypad Yes Navigation keys Yes Up—Volume Up button Down—Volume Down button Left[...]

92 System information Feature Supported on the WLAN handsets Description Password Admin No The handsets can be password-protected, but this is different from the IP Phone 2004 password protection mechanism. The IP Phone 2004 password protection is supported, in addition to the handset password protection. KEM No Nor tel Communication Server 1000 WL[...]

93 Installation This chapter contains information about the follo wing topics: • "Required materials" (page 93) • "Preinstallation checklist" (page 94) • "WLAN IP T elephony Manager 2245 installation tasks" (page 94) • "WLAN Application Gatewa y 2246 installation" (page 97) Required materials The f ol[...]

94 Installation Supplied equipment Each WLAN IP T elephony Manager 2245 and WLAN Application Gatew ay 2246 is shipped with one Class II AC adapter with 24V DC , 1A output. Preinstallation chec klist Ensure that the follo wing requirements are met pr ior to installation: • The location chosen for the WLAN IP T elephony Manager 2245 and WLAN Applic[...]

WLAN IP T elephony Manager 2245 installation tasks 95 Figure 22 WLAN IP T elephony Manager 2245 front panel • RS-232 por t—the male DB-9 connector (DTE). Provides an RS-232 connection to a ter minal, terminal emulator , or modem for system administration. • Link LEDs — LNK OK —lit when there is a network connection — AC T —lit when th[...]

96 Installation Procedure 2 W all-mounting the WLAN IP T elephony Manager 2245 Step Action 1 Use a 18-inch drill bit to dr ill f our pilot holes, on 1.84 by 12.1 inch centers (appro ximately equivalent to 1-1316 inch by 12-18 inch). 2 Inser t the #8 x 34-inch screws in the pilot holes and tighten, lea ving a 18 to 14-inch gap from the wall. 3 Slide[...]

WLAN Application Gatewa y 2246 installation 97 4 Repeat steps 1-3 for each additional WLAN IP T elephony Manager 2245. The mounting plate is designed to provide the correct minimum spacing between units. When mounting multiple units, stack the units in the rac k as closely as possib le. —End— LAN connection Use an RJ-45 cable to connect the NET[...]

98 Installation Nor tel Communication Server 1000 WLAN IP T elephony Installation and Commissioning NN43001-504 01.02 Standard Release 5.0 15 June 2007 Copyright © 2004-2007, Nor tel Networks .[...]

99 WLAN IP T elephony Mana g er 2245 configuration This chapter contains information about the follo wing topics: • "Introduction" (page 99) • "Configuration tasks" (page 101) • "Connect to the WLAN IP T elephony Manager 2245" (page 101) • "Configure the network" (page 103) • "Configure the[...]

100 WLAN IP T elephony Manager 2245 configuration Each WLAN IP T elephony Manager 2245 is configured with an IP address with which all of the wireless handsets communicate. In addition, each WLAN IP T elephony Manager 2245 is configured with a pool of IP addresses. When a wireless handset registers with a WLAN IP T elephony Manager 2245, the wir[...]

Connect to the WLAN IP T elephony Manager 2245 101 the entire WLAN IP T elephony Manager 2245 group f ails. All active calls are lost and no future calls can be placed until the master WLAN IP T elephony Manager 2245 is replaced (either by installing a spare or b y reconfiguring one of the slav es to be a master). • Alternately , if one of the s[...]

102 WLAN IP T elephony Manager 2245 configuration Procedure 5 Connecting to the WLAN IP T elephon y Manager 2245 through a serial por t Step Action 1 Using a DB-9 female , null-modem cable, connect the WLAN IP T elephon y Manager 2245 to the ser ial por t of a ter minal or PC . 2 Run a ter minal emulation program (such as HyperT erminal), or use a[...]

Configure the network 103 Procedure 6 Connecting to the WLAN IP T elephony Manager 2245 through T elnet Step Action 1 Run a T elnet session to the IP address of the WLAN IP T elephony Manager 2245. 2 Enter the login and the passw ord. Note: The login name and passw ord are case-sensitive. The NetLink SVP-II System menu appears. The f ollowing menu[...]

104 WLAN IP T elephony Manager 2245 configuration F ore more information about the master WLAN IP T elephony Manager 2245, see "Master WLAN IP T elephony Manager 2245" (page 60) . • Hostname: —optional field. Change the def ault hostname of this WLAN IP T elephony Manager 2245, if desired. Hostname is f or identification pur poses [...]

Configure the network 105 • Maintenance Lock —indicates whether the WLAN IP T elephony Manager 2245 is in Maintenance Lock mode. • Disable T elnet Ser vice —indicates whether a T elnet session can access the WLAN IP T elephon y Manager 2245. The a vailab le options are: — Y —pre vents a T elnet session from accessing the WLAN IP T elep[...]

106 WLAN IP T elephony Manager 2245 configuration 2 Enter Y . 3 Alternatively , select the Reset option found in the SVP-II Configuration screen. Press Esc . See "Configure the WLAN IP T elephon y Manager 2245" (page 106) . —End— Changing the master IP address T o change the IP address of the master WLAN IP T elephony Manager 2245,[...]

Configure the WLAN IP T elephony Manager 2245 107 — Enter DHCP . Ensure that the IP address of the master WLAN IP T elephon y Manager 2245 is configured in the DHCP ser ver and configure the other WLAN IP T elephon y Managers 2245 to obtain the inf or mation from the DHCP ser ver . — Enter DNS . Ensure that the IP address of the master WLAN [...]

108 WLAN IP T elephony Manager 2245 configuration T o ensure the system transmits voice pack ets efficiently and with minimal dela y , you must configure the decimal v alue f or voice pac kets higher than the value f or data pack ets. The configurable classes are: — Administration—used f or T elnet, TFTP and other administrative traffic. T[...]

Change the passw ord 109 • first character must be a letter • other characters can be a letter or a number • dashes, spaces, and punctuation mar ks are not allowed (alphanumeric only) 3 Select Set P asswor d and press Enter . Alternatively , press the S ke y on the ke yboard. Record the pass word and keep it in a saf e place. —End— If yo[...]

110 WLAN IP T elephony Manager 2245 configuration Nor tel Communication Server 1000 WLAN IP T elephony Installation and Commissioning NN43001-504 01.02 Standard Release 5.0 15 June 2007 Copyright © 2004-2007, Nor tel Networks .[...]

111 Administration and maintenance This section contains information about the follo wing topics: • "Adding a WLAN IP T elephony Manager 2245 to the system" (page 111) • "Replacing a WLAN IP T elephony Manager 2245" (page 112) • "Removing a WLAN IP T elephony Manager 2245 from the system" (page 113) • "Cha[...]

112 Administration and maintenance is checking in again and again, it can indicate a problem on the network, such as poor AP cover age for a user who is moving about. This inf or mation is useful when troubleshooting. Replacing a WLAN IP T elephony Manager 2245 Failed master WLAN IP T elephony Manager 2245 If the master WLAN IP T elephony Manager 2[...]

View softw are version 113 —End— Removing a WLAN IP T elephony Manager 2245 from the system When a WLAN IP T elephony Manager 2245 is removed from the system, wireless handsets using the WLAN IP T elephon y Manager 2245 are affected. If the remov al of the WLAN IP T elephony Manager 2245 is intentional, loc k and idle it before removing the WLA[...]

114 Administration and maintenance For the WLAN IP T elephony Mana ger 2245 T o vie w the software v ersions for the WLAN IP T elephon y Manager 2245, f ollow the steps in Procedure 11 "Viewing the software v ersion" (page 114) . Procedure 11 Viewing the software version Step Action 1 F rom the WLAN IP T elephony Manager 2245 NetLink SVP-[...]

Software updates 115 Update software on the WLAN IP T elephony Mana g er 2245 T o update the software on the WLAN IP T elephony Manager 2245, reset it. When the WLAN IP T elephony Manager 2245 star ts up, it compares its software v ersion to the software version on the TFTP Ser ver . The WLAN IP T elephon y Manager 2245 downloads the software from [...]

116 Administration and maintenance If the TFTP Ser ver cannot be reached at the time the wireless handset is powered on, resets, or comes bac k into a WLAN ser vice area, the wireless handset tries a fe w times to contact the TFTP Ser ver , and then gives up and uses the e xisting software. If more wireless handsets are requesting TFTP ser vice tha[...]

Wireless handset download messages 117 F or more inf or mation, see WLAN Handsets Fundamentals (NN43001-505) . Displays When the wireless handset is po wered on, it displa ys a ser ies of messages indicating that it is searching f or new software, chec king the v ersions, and downloading the software . Dur ing the download, a progress bar on the wi[...]

118 Administration and maintenance Download failure or recovery messages T ab le 14 "F ailure and recovery messages" (page 118) lists the display messages f or the wireless handset that indicate a f ailure or reco ver y situation during the software download process. Ta b l e 1 4 Failure and reco very messages Message Description Server B[...]

119 T r oubleshooting This chapter contains information about the follo wing topics: • "T roubleshooting the WLAN IP T elephon y Manager 2245" (page 119) • "T roubleshooting the WLAN Application Gatewa y 2246" (page 122) • "T roubleshooting the handset" (page 122) • "Dropped calls" (page 124) • &quo[...]

120 T roub leshooting F rom the System Status Menu screen, select Error Status. The Error Status screen displa ys activ e alar ms on the WLAN IP T elephony Manager 2245. T ab le 15 "WLAN IP T elephony Manager 2245 active alarms and actions" (page 120) lists the alar ms and the actions required to eliminate the alar m. Ta b l e 1 5 WLAN IP[...]

T roub leshooting the WLAN IP T elephony Manager 2245 121 — drop —pac kets dropped due to insufficient memor y — fifo —o verrun occurred dur ing reception — alignment —non-octet-aligned pack ets (number of bits not divisible by 8) — multicast —pac kets receiv ed with a broadcast or multicast destination address • TX —Ethernet [...]

122 T roub leshooting This inf ormation helps to deter mine if the most recent software v ersion is running. This inf or mation assists Nor tel T echnical Suppor t in troubleshooting software prob lems. Speed or duplex mismatch A duple x mismatch on the WLAN can cause the WLAN IP T elephony Manager 2245 to not operate properly . Doub le-check WLAN [...]

T roub leshooting the handset 123 • At what location did the problem occur? Record this information and provide it to the system administrator or Nor tel T echnical Suppor t. Access P oint prob lems Most, but not all, wireless handset audio prob lems are related to AP range, positioning, and capacity . P erf orming a Site Sur ve y as descr ibed i[...]

124 T roub leshooting Duplex mismatch A duple x mismatch on the WLAN can cause the wireless handsets to not operate properly . Double-chec k WLAN connections and interf aces to ensure that they are all configured as full-duple x. No ring It is possible in cer tain situations f or a v oice mail message to be left on a wireless handset without the w[...]

Dropped calls 125 Wireless handset status messages Wireless handset status messages provide information about the handset communication with the AP and Call Ser ver . T able 16 "Wireless handset status messages" (page 125) summar izes the status messages, in alphabetical order . Ta b l e 1 6 Wireless handset status messages Message Descri[...]

126 T roub leshooting Message Description Action Auth Failed xxxxxxxxxxxx x...x = AP MAC address Handset authentication is refused by the AP; displays the MAC of the failing AP. Check the handset and AP security settings. Ensure that the AP is configured per the Configuration Note. Try another AP. Auth Timeout xxxxxxxxxxxx x...x = AP MAC address Ha[...]

Dropped calls 127 Message Description Action Bad Network Mask The value of the network mask for the Remote Network entered in the handset through the menus or the Configuration Cradle is missing or invalid. Enter a valid network mask. Bad Payload Type The VPN server is not accepting some of the parameters passed to it by the handset. One common ins[...]

128 T roub leshooting Message Description Action Battery Low The Battery Low message indicates that the battery pack can be changed while the call is still in progress. For the WLAN Handsets 2210/ 2211/2212 only, do not press Power Off/End Call . Place the call on Hold or Park, quickly remove the discharged battery and replace with a charged batter[...]

Dropped calls 129 Message Description Action Charge Complete The wireless handset is now fully charged. No action needed. Checking Code Wireless handset is contacting the TFTP Server to determine if it has a newer version of software that must be downloaded. None. This message usually only lasts for approximately one second. If message remains disp[...]

130 T roub leshooting Message Description Action wireless handset stops trying. Reconfigure the DHCP server and power-cycle the wireless handset. DHCP Error 5 Failure during WEP Key rotation process (proprietary failure). DHCP Lease Exp yyy.yyy.yyy.yyy y...y = DHCP Server IP address DHCP is not responding to renewal attempts. At least one renewal s[...]

Dropped calls 131 Message Description Action Erase Failed Download process failed to erase the memory in the wireless handset. Operation retries but can eventually report the error int. error: 0F. Power cycle the wireless handset. Erasing memory The wireless handset has determined that a download must occur and is erasing the current software from [...]

132 T roub leshooting Message Description Action Invalid ID Info The VPN server did not recognize this user. Make sure that the local ID (KEY ID) entered in the handset matches the key ID in the VPN server. For a Contivity VPN server, the local ID must match the username. Multiple SVP Svr yyy.yyy.yyy.yyy y...y = WLAN IP Telephony Manager 2245 IP ad[...]

Dropped calls 133 Message Description Action No Host IP (Addr) The wireless handset is configured for static IP (as opposed to use DHCP) and no valid host IP address (the wireless handset IP address) is entered. Enter a valid IP address in the configuration settings or change to use DHCP. No IP Address Invalid IP address. Check the IP address of th[...]

134 T roub leshooting Message Description Action • Out of Range Try getting closer to an AP. Check to see if other handsets are working within the same range of an AP. If so, check the SSID of the handset. • incorrect WEP settings Verify that all the WEP settings in the handset match those in the APs. • Incorrect Security settings Verify that[...]

Dropped calls 135 Message Description Action No SVP Response yyy.yyy.yyy.yyy y...y = SVP Server IP address The handset has lost contact with the WLAN IP Telephony Manager 2245. This can be caused by bad radio reception or a problem with the WLAN IP Telephony Manager 2245. The handset keeps trying to fix the problem for 20 seconds, and the message c[...]

136 T roub leshooting Message Description Action No VPN Server The handset cannot find the VPN server. Check that the value of the VPN Server IP address configured through the administration menu or the Configuration Cradle match the address of the VPN server. Not Installed! A required software component is missing. Check that all required software[...]

Dropped calls 137 Message Description Action Server Unavailable. Restarting... (For the WLAN Handset 6120/6140 only) An error caused the handset to lose the call. It is trying to restart and return to standby mode. Occurs during Restart on Error mode. The handset is attempting to register with the PBX and resume normal operation. Error details may [...]

138 T roub leshooting Message Description Action TFTP ERROR(x):yy A failure occurred during a TFTP software download. (x) = the file number that was being downloaded; yy = an error code describing the particular failure. Possible error codes are: • 01 = TFTP Server did not find the requested file. • 02 = Access violation (reported from TFTP Ser[...]

Dropped calls 139 Message Description Action Waiting Wireless handset has attempted some operation several times and failed. It is now waiting for a period of time before attempting that operation again. None. The wireless handset is waiting for a specified period of time before attempting that operation again. Watchdog Timeout The wireless handset[...]

140 T roub leshooting MANUFACTURER CODE: [NAME] MODEL: NT CODE: NT2K00GI COLOR CODE: 66 RLS CODE: 0 SER NUM: 7641C7 FWSW VERSION: 0602B59 .idu 62 2 I2004 TN: 062 0 00 02 V TN ID CODE: i2004 ISET MAC ADR: 00:90:7A:01:7E:47 ISET IP ADR: 192 .168 .010 .200 LTPS IP ADR: 047 .011 .214 .165 MANUFACTURER CODE: [NAME] MODEL: NT CODE: NTTQ5010 COLOR CODE: 6[...]

Dropped calls 141 192.168.10.200 is an alias IP address assigned by the WLAN IP T elephony Manager 2245. TN HWID STATUS HOSTIP TERMIP PORT ______ _______________________________ ______ __________ ____________ _______ 0x600a 00000000000003000907a017e476607 REG 47.11.214.165 192.168.10.200 0x1450 CAPS _________ 0x00000000 ----------------------------[...]

142 T roub leshooting • last two digits—Release Code. The Release Codes are defined as f ollows: — IP Phone 2004 Phase 1—0 — IP Phone 2004 Phase 2—2 — WLAN Handset 2210—0x06 — WLAN Handset 2211—0x07 — WLAN Handset 2212—0x08 -> dsetShow TN IP Address Hardware ID TermType ---- --------------- ------------------ ---------- [...]

Dropped calls 143 isetShow , isetShowByTN, and isetShowByIP Similar to the dsetShow command, the wireless handset outputs its specific hardware ID (see dsetShow ) and alias IP , not the physical IP address. The FW version has a diff erent f or mat <V ersion>.<Issue> in this output. In the f ollowing e xample, the telephone with TN 062-[...]

144 T roub leshooting -> usiLibTraceOn "192.168.10.200", 255, 255 value = 0 = 0x0 Determining alias IP addresses When diagnosing network problems, (f or example , to ping the wireless handset), it is useful to know the mapping between the alias IP addresses as displa yed by v arious Call Ser ver commands and the ph ysical IP address of[...]

Before calling Nortel T echnical Suppor t 145 • any error messages displa yed on the handset displa y screen • content of the Syslog Ser ver (if using) • log of the DHCP Ser ver (if a vailab le), if using DHCP Nor tel Communication Server 1000 WLAN IP T elephony Installation and Commissioning NN43001-504 01.02 Standard Release 5.0 15 June 200[...]

146 T roub leshooting Nor tel Communication Server 1000 WLAN IP T elephony Installation and Commissioning NN43001-504 01.02 Standard Release 5.0 15 June 2007 Copyright © 2004-2007, Nor tel Networks .[...]

147 Appendix A WLAN Application Gate wa y 2246 This appendix contains information about the following topics: • "Introduction" (page 147) • "Third-par ty applications" (page 150) • "Installation" (page 151) • "Configuration" (page 153) • "Continuing configuration through T elnet" (page 1[...]

148 Appendix A WLAN Application Gatewa y 2246 Model number Maximum number of users NTTQ65CA 256 NTTQ65DA 512 NTTQ65EA 1024 NTTQ65FA 10000 In Figure 23 "WLAN Application Gatew ay 2246 connections" (page 148) , a WLAN Application Gate wa y 2246 is connected to the site LAN through an Ether net s witch. The connection to the Application Ser [...]

Introduction 149 Figure 24 Ethernet switch connections Front panel The WLAN Application Gate wa y 2246 models hav e similar front panel indicators. See Figure 25 "NTTQ65xx" (page 150) . The NTTQ65xx is av ailable in scaled increments to suppor t up to 10 000 users. Nor tel Communication Server 1000 WLAN IP T elephony Installation and Comm[...]

150 Appendix A WLAN Application Gatewa y 2246 Figure 25 NTTQ65xx • Network Link LEDs — (L)NK OK —lit when there is a network connection, (for e xample, LINK OK). — (A)CT —lit if there is system activity . — (C)OL —lit if there are network collisions. — (E)RROR —lit when the system has detected an error . • Status LEDs—indicate[...]

Installation 151 Manuf acturing: • rela y alar ms to handsets from malfunctioning equipment • enable managers to monitor production output Call Centers: • re view queue statistics • receive alarms when metr ics e xceed thresholds Nurse-call systems In the health care market, the f ollowing nurse-call system manuf acturers hav e applications[...]

152 Appendix A WLAN Application Gatewa y 2246 Procedure 13 Installing the WLAN Application Gateway 2246 Step Action 1 Place the WLAN Application Gatewa y 2246 on a shelf or conv enient location. Note: The WLAN Application Gatew ay 2246 is ph ysically connected to the Ether net switch and can be placed in any conv enient location within 325 ft (100 [...]

Configuration 153 • Bits per second: 9600 • Data bits: 8 • P arity: None • Stop bits: 1 • Flow control: None Note: If using Windows 2000, Ser vice P ack 2 must be installed to enable the use of HyperT erminal™. 3 Reset the system. The f ollowing appears on the ter minal displa y: 04830130 4 T ype the f ollowing command using the termin[...]

154 Appendix A WLAN Application Gatewa y 2246 Administration console navigation Use the ke ys descr ibed in T ab le 18 "Administration console navigation" (page 154) to mov e around the Administration console screens. Ta b l e 1 8 Administration console navigation To perform this function Press Select function from menu Arrow keys to high[...]

Configuration 155 4 Select the Feature Programming option to configure the function sequence that activates the application. See "Progr amming a f eature" (page 163) . —End— Configuring the O AI Bo x F ollow the steps in Procedure 15 "Configure the system type from the OAI Bo x Configuration option" (page 155) to confi[...]

156 Appendix A WLAN Application Gatewa y 2246 Procedure 16 Configuring the network Step Action 1 F rom the NetLink O AI System screen, select Network Configuration . 2 Enter the configuration inf or mation f or the WLAN Application Gatew ay 2246, as pro vided by the netw or k administrator . • Ethernet Address —this is the MA C address of th[...]

Configuration 157 also possible to access the WLAN Application Gatew ay 2246 using its hostname instead of the IP address. • Logging —can be configured to Syslog or NONE . • Log server —enter the IP address or hostname of the Syslog Ser ver on the netw or k if Syslog is configured. The WLAN Application Gatew ay 2246 writes Syslog format [...]

158 Appendix A WLAN Application Gatewa y 2246 —End— All components cycle through their usual diagnostic routine. Connecting to the Application Server Some applications can require a LAN connection between the Application Ser ver and the WLAN Application Gatew ay 2246. If the applications do not require a LAN connection, use the RS-232 por t con[...]

Configuration 159 The WLAN Application Gatewa y 2246 uses the f ollowing pins on the connector . Ta b l e 1 9 Pins on the connector Pin Function 1 Carrier Detect 2 Data OAI Receives 3 Data OAI Transmits 5 Ground 7 Ready to Send 8 Clear to Send Connect to the Application Ser ver through the LAN The IP address must be configured f or the WLAN Appli[...]

160 Appendix A WLAN Application Gatewa y 2246 Figure 28 WLAN Application Gatewa y 2246 connection to Application Server thr ough a modem Continuing configuration thr ough T elnet After the IP address f or the WLAN Application Gate way 2246 is configured, the WLAN Application Gate wa y 2246 reset and connected to the LAN and the Application Ser ve[...]

Continuing configuration through T elnet 161 When the configuration procedure is complete , the NetLink OAI System screen adds a F eature Programming option. Also , the OAI Line Configuration option is replaced b y a T elephone Line Configur ation option. Configuring the T elephone Line Each handset that uses the application f eatures must be [...]

162 Appendix A WLAN Application Gatewa y 2246 4 Write the MA C address on the Wireless Handset Planning W or ksheet. See "Planning Worksheet f or Handsets" (page 171) . 5 Repeat step 4 , step 5 , and step 6 f or each wireless handset to be added or changed. 6 Press Esc to return to the NetLink O AI System screen. —End— Deleting a hand[...]

Continuing configuration through T elnet 163 2 At the T elephone Line Configuration screen, select the field to use as the search ke y ( MAC Ad dress , Name ,o r Extension ), 3 Press S to displa y a search screen dialog bo x. 4 T ype an appropriate search str ing. 5 Press Enter . The success or f ailure of the search appears at the bottom of the[...]

164 Appendix A WLAN Application Gatewa y 2246 3 T ype an y label up to six characters. The label you type here appears on the handset telephone display screen ne xt to the assigned number on the FCN menu. —End— Setting or changing a pass wor d Y ou can configure a unique passw ord f or the WLAN Application Gatewa y 2246. The pass word restrict[...]

System status 165 Procedure 24 Viewing system status Step Action 1 F rom the NetLink O AI System screen, select the System Status Menu option. 2 At the Systems Status Menu screen, select from the f ollowing options: • Application Active — Ye s appears if the application is communicating correctly with the WLAN Application Gatew ay 2246. No appe[...]

166 Appendix A WLAN Application Gatewa y 2246 • User Time P eriod —the length of time (in seconds) that statistics accumulate in the Userpkts column bef ore resetting to zero . When troubleshooting a prob lem, use this setting to isolate statistics for a given time period (for e xample, one hour). This is the only field in this screen that can[...]

Cer tification testing 167 components. This inf or mation helps deter mine if the most recent version of software is running, and assists Nor tel T echnical Suppor t in troubleshooting software prob lems. Viewing software versions F rom the System Status Menu screen, select Software V ersions . T elephone line status The T elephone Line Status scr[...]

168 Appendix A WLAN Application Gatewa y 2246 WLAN Application Gateway 2246 installation on existing system F ollow the steps in Procedure 25 "Cer tifying wireless handsets on an e xisting system" (page 168) to cer tify the wireless handsets on an e xisting system. Procedure 25 Certifying wireless handsets on an existing system Step Actio[...]

Software 169 Nor tel periodically upgrades the fnctla.bin file , which is the only file downloaded. The other files are configuration files and their names are provided f or inf or mation and backup purposes. Obtain software using FTP When using FTP , a host system is used to connect to a remote system. In this e xample, the host is the client[...]

170 Appendix A WLAN Application Gatewa y 2246 7 Navigate to the NetLink O AI System screen f or the WLAN Application Gatew ay 2246 8 Select System Status . 9 Select Software V ersions to verify that software v ersions for the WLAN Application Gatew ay 2246 are correct. 10 Reset the system through the O AI Bo x Configuration screen in order to rest[...]

Planning Worksheet for Handsets 171 The code downloads into the WLAN Application Gatewa y 2246. —End— Planning W orksheet for Handsets Cop y and complete the worksheet in T able 21 "Handset Planning W or ksheet" (page 171) to track par ameters f or each handset. Ta b l e 2 1 Handset Planning W orksheet OAI Port MAC Address User Name D[...]

172 Appendix A WLAN Application Gatewa y 2246 OAI Port MAC Address User Name Dialing Ext. IP Address (if static) 26 27 28 29 30 Free the serial por t for administrative purposes If the serial por t is being used as the primar y communication link with the Application Ser ver , you must enter the O AI command to free the serial por t to allow it to [...]

173 Appendix B T r oubleshooting WLAN IP T elephon y installations This appendix contains information required for troub leshooting and diagnosing of a WLAN IP T elephony installation, including the follo wing topics: • "Site data-gathering tables" (page 173) • "Product-specific configuration" (page 176) • "WLAN spe[...]

174 Appendix B T roubleshooting WLAN IP T elephony installations Figure 29 System Information tab le Figure 30 System History table Nor tel Communication Server 1000 WLAN IP T elephony Installation and Commissioning NN43001-504 01.02 Standard Release 5.0 15 June 2007 Copyright © 2004-2007, Nor tel Networks .[...]

Site data-gathering tables 175 Figure 31 Customer En vironment table Figure 32 Attachments: IP Sniffer T race Captures table A TTENTION T ak e the wired traces at the mirrored por t, to which the 2245 connects, on the Data Switch. T ak e the Wireless traces at the Access P oints (AP), which are associated with the Wireless T elephony Sets (WTS), on[...]

176 Appendix B T roubleshooting WLAN IP T elephony installations Figure 33 Attachments: Other Required tab le Product-specific configuration The f ollowing sections provide product-specific configuration inf ormation. T erminal pro xy ser ver Ensure that the system meets the f ollowing requirements: • CS1000 Release 3.0: include the patches i[...]

WLAN specific configuration 177 Handsets F or the WLAN Handsets 2210/2211/2212, configure the license code to 010 to download the Nor tel UNIStim fir mware. F or the WLAN Handsets 6120/6140, configure the T elephony Protocol to 032. F or fir mware and documentation, go to w ww130.nor telnetworks.com . WLAN IP T elephony Manager 2245 If you ha[...]

178 Appendix B T roubleshooting WLAN IP T elephony installations Nortel switches This section contains configuration information for Nor tel s witches. Nortel WLAN Security Switch The 2350, 2360, and 2380 model s witches hav e the f ollowing requirements: • load 4.1.14 • configure radio-profile voice dtim-interval 3 • configure radio-pro?[...]

WLAN specific configuration 179 • Enable Multicast Suppor t on the WLAN Secur ity Switch 2270 to enable use of the PTT feature f or Nor tel Handsets. With the f ollowing settings, you can use Multicast f or some of the regular SVP ser ver and PBX control traffic: Switch > General: Ether net Multicast Suppor t = Enabled: (2.2) Switch > Ge[...]

180 Appendix B T roubleshooting WLAN IP T elephony installations Y ou must add B and C as members under mobility group configuration f or switch A. Y ou must add A and C as members under mobility group configuration f or switch B . Y ou must add A and B as members under mobility group configuration f or switch C . The abov e recommendation is tr[...]

WLAN specific configuration 181 A TTENTION 2.x code is not suppor ted. Nortel recommends that sites upgrade to 3.2.116.21 code. Contact Nor tel GNTS T echnical suppor t to obtain this code—do not download it from the Cisco Web site. Specific Cisco configuration examples T ab le 22 "1230 connected with 2950 and 2245 connected with 2950&qu[...]

182 Appendix B T roubleshooting WLAN IP T elephony installations AP: 1230 2950 connected the APs 2950 connected to 2245 7 access-list 101 permit udp 172.23.0.016 eq 5200 172.23.0.016 8 policy-map trust -voice-2245 class voice-sig set ip dscp 40 class voice-bearer set ip dscp 46 T ab le 23 "1230 connected with 3560 and 2245 connected with 6509&[...]

General WLAN configuration 183 AP:1230 3650 connected to APs 6509 connected to 2245 7 policy-map trust -voice-2245 class voice-sig set ip dscp 40 class voice-bearer set ip dscp 46 8 int fastethernet 03 (the port that is connected with 2245) switchport access vlan xx switchport mode access mls qos trust cos mls qos cos 5 service-policy input trust-[...]

184 Appendix B T roubleshooting WLAN IP T elephony installations DHCP server options The DHCP ser ver options known to work in almost ev er y situation are 3, 7, 42, 66, 128, 151, and 152: • DHCP Option 3—the Def ault Gatewa y • DHCP Option 7—the Syslog Ser ver • DHCP Option 42—the Time Ser ver • DHCP Option 60—the Class Identifier[...]

DHCP options 185 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Mask Code. 8 bits. Always set to 1. Length. 8 bits. Always set to 4. Mask. 32 bits. Subnet mask of the client. RFCs: [RFC 2132] DHCP Options. Updated by: RFC 3942. DHCP option 3: Length: 6+ bytes This option specifies a list of 32 bit IP addresses for routers on the client’s subnet.[...]

186 Appendix B T roubleshooting WLAN IP T elephony installations 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 IP address Code. 8 bits. Always set to 7. Length. 8 bits. 4+ in multiples of 4. IP address. 32 bits. One or more IPv4 addresses. RFCs: [RFC 2132] DHCP Options. Updated by: RFC 3942. DHCP option 15: 3+ bytes This option specifies the doma[...]

DHCP options 187 DHCP suppor t for handsets that em ulate the IP Phone 2004 DHCP suppor t in the IP Phone 2004 ter minal requires a Class Identifier option with each DHCP Discov er y and Request message. Additionally , the IP Phone 2004 checks f or either a V endor Specific option message with a specific, unique to Nor tel IP Phone 2004 encapsul[...]

188 Appendix B T roubleshooting WLAN IP T elephony installations Format of the IP Phone 2004 T erminal DHCP Encapsulated V endor Specific option The f ollowing definition describes the Nor tel IP Phone 2004 specific, Encapsulated V endor Specific option. This option must be encapsulated in a DHCP V endor Specific option (Ref er to RFC 1541 and[...]

DHCP options 189 This string can be NULL ter minated although the NULL is not required f or parsing. Notes: 1. aaa and rrr are ASCII-encoded decimal numbers with a range of 0 to 255. They identify the Action Code and Retry Count, respectively, for the associated TPS server. Internally, to the IP Phone 2004, they are stored as one octet (0x00..0xFF)[...]

190 Appendix B T roubleshooting WLAN IP T elephony installations the rele vant inf or mation out of this option and uses it to configure the primar y and (optionally) secondar y TPSs. Either this encapsulated option or a similarly encoded site-specific option must be present. Configure the DHCP ser ver to send one or the other—but not both. Wi[...]

Quality of Ser vice checklist for v oice ov er WLAN applications 191 Notes: 3. If only one server is required, terminate the primary TPS sequence immediately with (.) instead of (;). Example: Norteli2004- A,iii.jjj.kkk.lll:ppppp,aaa,rrr 4. The valid options are one server or two servers (0, 3, or other numbers are not allowed). 5. The Action code v[...]

192 Appendix B T roubleshooting WLAN IP T elephony installations 3. Enable SVP in the APs. SVP must be enabled in all APs that carry voice traffic. Not all AP vendors use SVP terminology. Cisco 350,1100, and 1200 series APs, for instance, refer to SVP compatibility as Protocol 119 support. The SpectraLink Web site provides AP settings used in SVP c[...]

Quality of Ser vice checklist for v oice ov er WLAN applications 193 RF basics and AP configuration The f ollowing points include the characteristics of a good RF environment that uses access point parameters for Nor tel wireless telephone voice communications. Only channels 1, 6, and 11 are used. • Disable auto-channel select f eatures and use [...]

194 Appendix B T roubleshooting WLAN IP T elephony installations • Use appropriate secur ity mechanisms for the wireless telephones and the requirements of the en vironment: — Nor tel WLAN IP T elephony telephones suppor t WEP , WP A-PSK, or WP A2-PSK. — Nor tel recommends that y ou alwa ys use Open A uthentication because it is more secure. [...]

Quality of Ser vice checklist for v oice ov er WLAN applications 195 — Enable the v oice VLAN across the network between the AP , to the SVP , to the Signaling Ser ver , to the Call Manager and all components in between. — Assign all devices in this VLAN to one subnet. – Ideally , there is no routing between any network de vices used f or voi[...]

196 Appendix B T roubleshooting WLAN IP T elephony installations • EAP or MAC Reauthentication inter val • TKIP MIC F ailure Holdoff Time T roub leshooting Ensure that the WLAN IP T elephony and PBX product mix lines up with the compatibility matrix in the current Product Bulletin. If the site does not conf or m, it is not classified as a supp[...]

T roub leshooting 197 V oice-quality issues The transpor t, or IP data network, are the most likely causes of voice-quality issues. In some circumstances, product issues (such as echo or Digital Signal Processor (DSP) errors) can cause problems with voice quality . The data network does not introduce echo into a conv ersation, b ut it can enhance e[...]

198 Appendix B T roubleshooting WLAN IP T elephony installations Handset error messa g es T ab le 26 "Handset error messages" (page 198) shows error messages that appear on the liquid cr ystal diode (LCD) displa y of the wireless handsets. Ta b l e 2 6 Handset error messa g es Short Error code Description Action Assert Assert Errors The p[...]

Timing information 199 Short Error code Description Action SVP No SVP Response The phone cannot communicate with the WLAN IP Telephony Manager 2245. Configure the Ethernet switch port and SVP to 100/full. Forward the DHCP option 151 to the IP of the SVP server. Verify the settings on the AP. Verify that there is no 2.4 Ghz interference of any kind.[...]

200 Appendix B T roubleshooting WLAN IP T elephony installations The handset sends a handshake to the WLAN IP T elephony Manager 2245 e ver y 30 seconds. If no response is received from the WLAN IP T elephon y Manager 2245, the handset tr ies f our more times, for a total of five attempts . If none of these get a response from the WLAN IP T elepho[...]

Diagnostic T ools 201 22 = signal strength of the specified AP 33 = channel number of the specified AP 4444 = DTIM inter val configured f or the specified AP MyID = soft k ey to toggle between single and any ESSID mode Detl = soft ke y to toggle between summar y and detail screens Press the Detl soft ke y to vie w the details, as f ollows: i:bb[...]

202 Appendix B T roubleshooting WLAN IP T elephony installations • current security configuration When Run Site Sur v ey begins , it is in single SSID mode. Press the Any soft ke y to s witch to all APs (regardless of SSID) mode; the Any soft ke y changes to MyID . The displa y looks like the f ollowing in multiple AP mode: 111111 -22 33 111111 [...]

Diagnostic T ools 203 When you select An y SSID mode, the summar y displa y contains the first six characters of the APs SSID instead of the beacon inter val, as shown in the f ollowing example . ab7b -28 02 2ae5 -48 06 2ae5 -56 11 Any ALPHA WSMTES voice Detl In detail mode, the displa y appears as follo ws. The left and r ight arrow ke ys mov e b[...]

204 Appendix B T roubleshooting WLAN IP T elephony installations A TTENTION Numbers racing across the handset display indicate that AP information is being obtained. A W aiting message indicates that the system is not configured properly and the handset cannot find any APs. Diagnostics Mode Diagnostics Mode e valuates the o ver all quality of the[...]

Diagnostic T ools 205 TxRetryCount is the transmit retr y count since power up . Diagnostics Screen 2 displa ys the f ollowing inf or mation: Jitter nnnnn LastRate nnnnn GatewayType mnemo where Jitter is the current delta from the desired jitter b uff er depth, in microseconds. LastRate is the last successful transmit data rate. GatewayType is a mn[...]

206 Appendix B T roubleshooting WLAN IP T elephony installations mnem is a mnemonic that indicates wh y the handset did not hand off to this candidate: Unkn reason unknown Weak signal strength too weak Rate One or more basic rates not supported Full AP cannot handle bandwidth requirements AthT Authentication Timeout AthF Authentication Failure AscT[...]

Diagnostic T ools 207 Syslog Mode A Syslog Ser ver m ust be present on the network so that the handset can send log messages and ha ve them sa ved. The Syslog Ser v er IP address can be configured using DHCP or statically configured. Note: If the Syslog Ser ver address is blank (000.000.000.000 or 255.255.255.255) or the handset is using DHCP and[...]

208 Appendix B T roubleshooting WLAN IP T elephony installations Syslog message Contents Successful Handoff New AP MAC New AP signal strength Old AP MAC Old AP signal strength Reason for handoff Other candidate APS: • MAC • Signal strength • Reason not used Security Error AP MAC AP signal strength Security mode Error details (mode dependent) [...]

Diagnostic T ools 209 Syslog message Contents Audio stats (AStat) AP MAC AP signal strength Payload size (in ms) Payloads sent Payloads received Payloads missed (not received) Payloads missed rate (over last 5 seconds) Payloads late Payloads late rate (over last 5 seconds) Average jitter Audio threshold (AThresh) exceeded (Sent if payloads missed r[...]

210 Appendix B T roubleshooting WLAN IP T elephony installations Syslog message Contents Radio stats (NStat) AP MAC AP signal strength Directed packets sent Directed packets received Multicast packets sent Multicast packets received Broadcast packets sent Broadcast packets received TX dropped count TX drop rate (over last 5 seconds) TX retry count [...]

Diagnostic T ools 211 Syslog message Contents Broadcast packets sent Broadcast packets received TX dropped count TX drop rate (over last 5 seconds) TX retry count TX retry rate (over last 5 seconds) RX retry count RX retry rate (over last 5 seconds) VPN: Established IKE phase 1 SA, renew in xs VPN: Established IKE phase2 SA yy:yy, renew in xs (a ph[...]

212 Appendix B T roubleshooting WLAN IP T elephony installations Reason code number Meaning 8 AUTH TIMEOUT 9 ASSOC TIMEOUT 10 FAILED AUTHENTICATION 11 FAILED ASSOCIATION 12 SOFT NEIGHBOR 13 NO SIG IMPROVEMENT 16 NO KEEPALIVE 17 LOST AUDIO 18 NO RESPONSE 19 NO PRIVACY 20 APP UNHAPPY 21 DISASSOCIATED 22 NO HANDOFF 23 HANDOFF 24 INITIAL ASSOC 25 LOST [...]

Data capture 213 Reason code number Meaning 43 FAILED ACTION 44 DELTS 45 QOS REQUIRED 46 CHANGED LISTEN INTERVAL Data capture Use the information presented in this section to begin capturing the correct data f or analysis. Questions Ask the f ollowing questions to help isolate the source of a prob lem: • Is the issue present with handsets that ar[...]

214 Appendix B T roubleshooting WLAN IP T elephony installations Figure 34 DHCP scope Notes: 1. Before you begin the data capture, disable any encryption protocols so that the data can be analyzed. If this is not possible, you must supply the encryption keys. 2. Time sync the wired and wireless IP sniffer traces (to the second if possible) and note[...]

Data capture 215 • the TLAN and ELAN IPs for the V oice Gatew a y Media Cards (V GMC) • a network diagram F or more information, see "Network diagr am" (page 215) . • a site sur ve y • screenshots of the DHCP ser ver scope with the fields fully expanded (no truncation of data in the view) • the encr yption protocol • the soft[...]

216 Appendix B T roubleshooting WLAN IP T elephony installations Configure the handset: • Admin Menu > Diagnostics > Diagnostics mode on • Admin Menu > Diagnostics > Syslog mode > full If a Syslog Ser ver is not a vailab le, use a public domain Syslog—f or more inf or mation, see the KIWI Syslog Daemon av ailable from w ww .ki[...]

Data capture 217 General data capture Bef ore you run the show r un-config or deb ug commands, enab le text capturing on your Hyper ter minal or T elnet application that you use to access the WLAN Security Switch 2270. Multiple times is better—cop y and paste the follo wing commands on the WLAN Security Switch 2270 CLI, rather than typing them i[...]

218 Appendix B T roubleshooting WLAN IP T elephony installations 4 Star t the wireless and wired sniff er captures. 5 Initiate a handset to handset regular call or Push-to-talk call. 6 Continue the voice con versation f or 1 to 2 minutes. 7 End the call that you estab lished in Step 5 . 8 End debug; cop y and paste the f ollowing commands on the CL[...]

Network speech lev els 219 2 While the Config progr am is r unning, remov e the batter y pack and place the handset in the Configuration Cradle. 3 Open the File menu and select Get Asser t Information . 4 Browse to the location to which y ou want to sav e the .asr t file. 5 Click Get Assert Data. The handset uploads the .asr t file to the locat[...]

220 Appendix B T roubleshooting WLAN IP T elephony installations Figure 35 Network speec h levels Reference documents T ab le 30 "References" (page 220) lists reference documents and related-reading f or this appendix. Ta b l e 3 0 References Source and type Title Revision Comments Nortel Product Bulletin WLAN Handset 2210/2211 January 20[...]

Reference documents 221 Source and type Title Revision Comments Nortel White Paper [QoE] Designing QoS-Enabled Networks for Voice & Data User Quality-of- Experience (QoE) (not applicable) (not applicable) Nortel Technical Solution Guide IP Telephony Client Deployment January 2006 Version 1.0 (not applicable) Nortel Technical Solution Guide Solu[...]

222 Appendix B T roubleshooting WLAN IP T elephony installations Source and type Title Revision Comments IEEE [802.11g] IEEE Std 802.11 Wireless LAN Medium Access Control and Physical Layer Specifications (not applicable) Further Higher Data Rate Extension in the 2.4 GHz Band SpectraLink White Paper Cisco 1100-1200- 1300 AP config/deploy guide PN: [...]

223 Appendix C Compatible Access P oints The Nor tel V oice over Wireless LAN solution is suppor ted on VIEW-cer tified Access P oints (APs). F or a list of cer tified APs, go to the SpectraLink W eb site w ww .spectra l ink.com . On the home page, select RESOURCES > Wi-Fi COMP A TIBILITY . The SpectraLink Web site also contains configuration[...]

224 Inde x Symbols/Numerics 10 Mbs 73 50 ms 80 70 ms 80 802.1 pq 83 802.1p tagging 83, 83 A Access P oints (APs) Compatible 223 Administration Console na vigation alarms 119 alarms on the WLAN IP T elephony Manager 2245 120 alarms, active 120 AP configuration 193 C Call Ser ver 111 CFNA 124 checking in 111 Cisco 178 4400 Series WLAN Controller 178[...]

Index 225 L Language 27 latency 80 La yer 2 por t 83 La yer 2 QoS 83 La yer 2 s witch por t 83 La yer 3 por t 83 locking the WLAN IP T elephon y Manager 2245 115 loss plan 81 L TPS 111 M master WLAN IP T elephony Manager 2245 60, 60, 113 multicast addresses 65 Multicasting 65 N network segments 65 No ring 124 node 80 non-master WLAN IP T elephony S[...]

226 Index W Wi-Fi Protected Access (WP A) 28 Wi-Fi Protected Access2 (WP A2) 28 Wired Equivalent Priv acy (WEP) 28 WLAN configuration 183 WLAN applications 191 Nor tel Communication Server 1000 WLAN IP T elephony Installation and Commissioning NN43001-504 01.02 Standard Release 5.0 15 June 2007 Copyright © 2004-2007, Nor tel Networks .[...]

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Nor tel Communication Server 1000 WLAN IP T elephony Installation and Commissioning Copyright © 2004-2007, Nor tel Networks All Rights Reser v ed. Publication: NN43001-504 Document status: Standard Document version: 01.02 Document date: 15 June 2007 T o provide feedback or report a problem in the document, go to w ww .nor tel.com/documentfeedback [...]