3Com S200 manuale d’uso

3Com ® Corporation PathBuilder ™ S200 Series Switch V oice Over IP[...]

Notice © 1998 3Com Corpor ation 5400 B ayfro nt Plaz a Santa Cl ara, CA 95052 -8145 (408) 32 6-5000 All rights reserved. Printed in U.S.A. Portions reprinted with th e permission of Motoro la, Inc. Restricted Rights Notificat ion for U.S. Go vernment Users The software (including firmware) addr essed in thi s m a nu al is provided to the U.S. Gove[...]

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V oice Over IP 1 V oice Over IP Overview Introducti on This document desc ribes the V oice Over I P (V oIP) feat ure for 3Com’ s Pa thBuilder S200 series swit ch Prod ucts. Note Parameter s and appl ications for voice traf fic are d iscussed in the manual. For inform ation on So TCP and serial dat a appli cations , refer t o the IP and LAN Featur[...]

2 V oice Over IP About V oice over IP (V oIP) About V oice over IP (V oIP) What is V oIP ? PathBuil der S200 series s witch p roducts s upport V oice ove r IP (V oIP) to provide terminat ion an d encapsul ation of voice a nd fax tra f fic for transpor t over an IP network ( see to Fig ure 1). 3Com’ s proprie tary p rotocol, S erial Protocol over [...]

V oice Over IP 3 T0008-48 /B Re visi on 5.2 About V oice over IP (Vo IP) Network T opology Introduct ion This sec tion describes a typical network topology for the a pplication of V oIP . Network T opology Figure 2 illustrat es a typi cal network topol ogy for voi ce tr aff i c. Figure 2. Example Network T opology Node Conventions The node conven t[...]

4 V oice Over IP About V oice over IP (V oIP) SoTCP Operation Introducti on This sect ion describes t he operat ion of SoTCP pr otocol. SoTCP provid es the encapsula tion metho d for carrying v oice traf fic over an IP network. SoTCP Packet Format The SoTCP prot ocol t erminates voice tr a ffic rec e ived from a voic e devic e and prefixe s the tra[...]

V oice Over IP 5 T0008-48 /B Re visi on 5.2 About V oice over IP (Vo IP) Establishing a Call Introduct ion This sect ion descr ibes call establishment s. Figure 4 shows the packets exchanged fo r session and connecti on esta blishme nt and finally , voice t ransfer . Figure 4. Session and Connec tion Establishment Voice Port Voice Port ACP call req[...]

6 V oice Over IP About V oice over IP (V oIP) Establishing a Session Befor e voice traf fi c c an pass be tween th e voice po rt s over t he networ k, th e source IP must est ablish a TCP and UDP session with t he des tinatio n IP node . Each sessi on is uniquel y identified by a source I P addre ss, des tination IP addr ess, sour ce port number , [...]

V oice Over IP 7 T0008-48 /B Re visi on 5.2 About V oice over IP (Vo IP) Data T ransfer The SoTCP prot ocol a ttaches the 3 or 4- byte header to t he packet. The SoTCP protocol then sends voic e packets over t he UDP chann el. 3 SoT C P Inte rn al Ca ll Accept Once th e destination I P node rece ives the ACP call acc ept f rom the remot e voice por[...]

8 V oice Over IP V oIP Applic ations V oIP Applica tions Introduct ion This sect ion desc ri bes typical applic ations of V oIP and the benefits of imple me nti ng voice ove r an IP network. Applications V oIP ca n be used to provid e cost eff ecti ve, long dis t ance phone serv ices over the IP network. Fi gure 5 illustrat es a netwo rk using V oI[...]

V oice Over IP 9 T0008-48 /B Re visi on 5.2 V oIP Applic ations Example V oIP Configuration Introduct ion This sec tion shows an exampl e of how to c onfigure V oIP . Figure 8 illu strat es how two PathBui l der S24x, 26x, and 2 7x swit ches can su pport long dista nce te lephone serv ice bet ween a sm all bra nch of fice and a head of fice, over t[...]

10 V oice Over IP V oIP Applic ations Configurati on Figure 9 shows the pa rameters c onfigured for e ach Pat hBuilder S2 00 series switch. Figure 9. Configurable Parameters to suppor t V oIP V oice Port Co nfigur ation Port Num ber: 3 1 Port Type: V oice Interfac e T ype:FXS Signall ing T ype: 1 E Lead Filter: Disable Signalling Mode: Normal Signa[...]

V oice Over IP 11 T0008-48 /B Re visi on 5.2 Configuring V oIP Configuring V oIP Introduct ion These sec tions describe how to confi gure the V oIP option. The parame ters for the V oIP optio n are s pecifie d in three re cords: • “SoTCP Parameters ” on page 12. • “Route Selec t ion T able Paramete rs” on page 15. • “SoTCP Map T abl[...]

12 V oice Over IP Configuring V oIP SoTCP Parame ters Navigating the CTP Figure 10 shows the CTP p ath to th e SoTCP specific par a meters. Figure 10. SoTCP Parameters SoTCP Parameter Descriptions The SoTCP parameter rec ord contain thes e param eters: Node: Address: Date: Time: Menu: Main Logout Examine : : Configure Node: Address: Date: Time: Men[...]

V oice Over IP 13 T0008-48 /B Re visi on 5.2 Configuring V oIP Maximum Number of TCP Sessions Range 1 to 40 Default 1 Descript ion Specifie s the maximum number of TCP sessi ons allowed throu gh SoTCP . Once the maximum number is reac hed, no mor e session s will be es tablishe d and the “SoTCP-N o more TCP sessi ons” alarm will be ge nerated. [...]

14 V oice Over IP Configuring V oIP Serial Connecti on Establishment T imeout Ran ge 1 to 200. Spec ified in 50 m s inc re men ts. Default 100 Descript ion Specif ies the t ime SoTCP wa its fo r connec tion es tabli shment wi th the seri al device. When a node receive s a call request from a sou r ce node, the SoTCP will se nd a Cal l Request p ack[...]

V oice Over IP 15 T0008-48 /B Re visi on 5.2 Configuring V oIP Route Selection T able Parameters Parameters The se Route Sel ection T abl e par ameters sho uld be c onfigure d: Note A table b oot is required for changes t o thes e parame ters to tak e af fect. Entry Number Range 1 to 16 Default 1 Descript ion Specifie s the number us ed to ref eren[...]

16 V oice Over IP Configuring V oIP SoTCP Map T able P arameters Navigating the CTP Figure 11 s hows the CTP path to the So TCP map paramete rs. Figure 1 1. SoTCP Map T able Parameter s Node: Address: Date: Time: Menu: Main Logout Examine : : Configure Node: Address: Date:1 Time: Menu: Configure Node Port Configure Network Services Node: Address: D[...]

V oice Over IP 17 T0008-48 /B Re visi on 5.2 Configuring V oIP Parameters The se SoTCP map ta ble par ameters s hould be con figured: Note A node b oot is re quired for ch anges to t hese parame ters to take af fect. Entry Number Range 1 to 32 for PathBui lder S21x switch 1 to 64 for PathBui lder S24x, 26x, and 27x switch Default 1 Descript ion Spe[...]

18 V oice Over IP Statis tics Statistics Introduct ion This section de scribes the st atistics ava ilable for the SoTCP option. T ypes of Statisti cs Y ou can genera te th ese st atisti cs: • SoTCP st atist ics • Detaile d SoTCP statistic s Navigating the CTP Figure 12 shows the CTP p ath to th e SoTCP statistic s. Figure 12. Statisti cs Screen[...]

V oice Over IP 19 T0008-48 /B Re visi on 5.2 Statistic s SoTCP St atist ics Example Figur e 13 shows t he SoTCP stat istics screen . Figure 13. SoTCP Statist ics Description Thi s table descri bes the s creen attribu tes shown i n Figure 13. Node: Addres s: Date: Time: SoTCP Stat istics Page 1 of 1 Trans actio n Su mm ar y: IN OUT TCP P acket s 123[...]

20 V oice Over IP Statis tics SoTCP Detailed Stat istics Example Figur e 14 shows t he detail ed SoTCP statisti cs scr een. Figure 14. SoTCP Detailed Stati stics Description Thi s table descri bes the s creen attribu tes shown i n Figure 14. Node: N ODEN AME Address : bl ank Date : Time: SoTCP D etai led Sta tist ics Page 1 of 1 TCP session : 1 of [...]

V oice Over IP 21 T0008-48 /B Re visi on 5.2 Statistic s Status Specif ies the current state of the ses sion. Status messages i nclude : • Start •I d l e •W a i t H d r • W ait Da ta • Abort The values mentioned apply t o connecti on status. UDP Port Number Specifies the local por t number when a voi ce SVC is present. Out of sequ ence pa[...]

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T echnical Support A-1 Appendix A T echnical Support 3Com prov ides easy access to techni cal s upport in formation throug h a variety of serv ices. This appendix desc ribes the se services. Info rmat io n cont ained in this appe ndix is correct a t time of publicati on. For the very latest , 3Com rec ommends tha t you acce ss the 3Com Corporati on[...]

A-2 T echnical Supp ort 3Com Bulletin Board Service The 3Com BBS cont ains patc hes, sof tware, and drivers for 3Com produ cts. This servic e is avail able th rough analog modem or di gital modem (ISDN) 24 hours a day , 7 days a we ek. Access by Analog Modem T o reach th e service by modem, se t your modem to 8 data bits, no parit y , and 1 stop bi[...]

T echnical Support A-3 If you are unable to contact y our n etwork su pplier , see the following sec tion on how to conta ct 3Com. Support from 3Com If you ar e unabl e to obta in ass istan ce from the 3Com onli ne techni cal re sources o r from your network suppli er , 3Com off ers technical telephone support servic es. T o find out more abo ut yo[...]

A-4 T echnical Supp ort Retur ning Products for Repair Before y ou send a produc t dir ectly t o 3C om for repai r , you must firs t obt ain a Return Materials Au thorizat ion (RMA) number . Products se nt to 3Com wit hout RMA numbers will be r eturn ed to the s ender unopened, at the sender ’ s expense. T o obtain a n RM A number , call or fax: [...]

Index Index-1 Numerics 3Com bull etin boa rd service (3Com BBS) A-2 3Com URL A-1 3ComFacts A- 2 A applica tions 2 , 8 B bullet in board service A-2 C call es tablishment 5 configu ration exam ple 9 para mete rs 11 sequence 9 voic e port 9 D data tr ansfer 7 destina tion IP node 3 E encapsul a tion mechanism 2 F fax se rvice (3 ComFa cts) A-2 N netw[...]