Shiro ADSL 2/2+ Ethernet Modem manuale d’uso

ADSL 2/2+ Ethernet Modem User Manual VERSION 1.0[...]

User Manual Page 2 of 92 Contents About this Manual ................................................................... 6 About the Router .......................................................................7 Requirements ..................................................................................... 7 Software ............................[...]

User Manual Page 3 of 92 Accessing the We b Manager ............................................................ 21 Menus ............................................................................................... 22 Basic Menu .................................................................................................................... 2[...]

User Manual Page 4 of 92 Port Forwarding ............................................................................................................. 49 Bridge Filters ................................................................................................................. 52 Web Access Control .............................................[...]

User Manual Page 5 of 92 Changing the Time out Settings ..................................................................................... 88 Firmware U pgrade ............................................................................ 89 Save Settings.................................................................................... 90 Restar[...]

User Manual Page 6 of 92 About this Manual This manual provides a description of the com ponents, basic operation, and advanced co nfiguration options of the router. Scope This manual provides the installa tion instructions, router component s, and configuration information through the Web manager. Target Audience This manual is designed for users [...]

User Manual Page 7 of 92 About the Router Congratulations on the purchase of y our router. This router provides advanced features that allow you to converge your computer, Inter net, and other network appliances into a single network through wired connection. Requirements Your computer must meet the following minimum requirements. Software Operatin[...]

User Manual Page 8 of 92 Package Contents Package contents are listed below. For any missing it ems, please contact your dealer immediately . Product contents vary for different models.  Modem  Ethernet Cable  Telephone Cable  Power Adapt er  Installation CD  Quick Start Guide[...]

User Manual Page 9 of 92 Device Design Front Panel The LEDs on the front panel gives you an idea about the power and connection status. A B C Label Action Description A POWER Off No power is supplied to the device Steady light Connected to an AC power supply B ETHERNET Off No Ethernet connection Steady light Connected to an Ethernet port Blinking l[...]

User Manual Page 10 of 92 Back Panel The back panel provides ports to power up and connect the router into the network. Back Panel Label Used for… DSL Connecting the telephone cable ETHERNET Connecting with a computer/device through Ethernet cable RESET Resetting the device. Press for 10 seconds to reset. 9V DC Connecting with the 9V power adapte[...]

User Manual Page 11 of 92 Getting Star ted Setting up the device is easy. The flowchart below provides an outline of the steps you need to complete the installation. There are brief descripti ons beside each step to he lp you along. Detailed instructions are provi ded in the subsequent pages.[...]

User Manual Page 12 of 92 Remove or Disable Conflicts To make sure the router installation moves on smoot hly, you need to remove or disable conflicts that may interfere the installation . Probable conflicts may include:  Internet sharing applications  Proxy software  Security software  TCP/IP settings  Internet properties  Tempor[...]

User Manual Page 13 of 92 Configuring TCP/IP Settings Use the default TCP/IP settings to allow the router to provide a network address to the computer, To set the TCP/IP properties: 1. Select Start > Run . This opens the Run dialog box. 2. Enter control ncpa.cpl and then click OK . This opens the Network Connections in your computer. 3. Right-cl[...]

User Manual Page 14 of 92 To remove temporary Internet files: 1. Select Start > Run . This opens the Run dialog box. 2. Enter control and then click OK . This opens the Control Panel . 3. Double-click Internet Options . This opens the Internet Options dialog box. 4. In the Temporary Internet Files pane, click Delete Cookies . 5. Click Delete Fil[...]

User Manual Page 15 of 92 Hardware Setup When installing the router, the commo n practice is to have the rout er, the main co mputer, and phone jack in the same room. The room should also hav e enough electrical outlets to match your needs. The following hardware setup samples depict two scenarios – Bridge Connection and Direct Connection. Bridge[...]

User Manual Page 16 of 92 POTS Splitter A phone line can carry phone call and Internet signals. When you enable the phone line for high speed Internet, the connection produces high-pi tched tones when using the phone. Installing a Plain Old Telephone Service (POTS) splitter separ ates the two signals and eliminates the noise. To setup the teleph on[...]

User Manual Page 17 of 92 Direct Connection When a computer is directly connected to the modem , you can use it to c onnect to the Internet. To setup a direct connection: 1. Plug one end of the telephone cable from the POTS Splitter’s ADSL port and then plug the other end into the router’s DSL port POTS Splitter A phone line can carry phone cal[...]

User Manual Page 18 of 92 2. Plug one end of the Ethernet cable from the router’s ETHERNET port and then plug the other end into the Ethernet port in your computer. 3. Connect the power adapter from the router’s 9V DC port into the electrical outlet and then press ON .[...]

User Manual Page 19 of 92 Connecting to the Internet Use the Web Manager’s Quick Start to connect to the Internet. Note: These connection settings only apply if your com puter is directly connected to the router. To connect to the Internet: 1. Open your browser. 2. Enter 192.168.1.1 in the address field and then press Enter . This opens the Log I[...]

User Manual Page 20 of 92 7. Click Connect . When the connection attempt is successful, the Basic Home page appears. When the connection attempt is not successful, a message will ask you to verify the Username and Password. Basic Home page[...]

User Manual Page 21 of 92 About the Web Manager The Web Manager is used to c onfigure the router settings. Accessing the Web Manager To access the Web Manager: 1. Open a browser. 2. Enter the router’s IP Address. The default IP Address is 192.168.1.1 . 3. When authentication is enabled, the log in page wi ll appear. In the login page, enter the U[...]

User Manual Page 22 of 92 Menus The web interface includes the following menus:  Basic Menu  Advanced Menu  Help Menu[...]

User Manual Page 23 of 92 Basic Menu The Basic Menu includes the Home and Quick Start links. Basic Menu[...]

User Manual Page 24 of 92 Advanced Menu The Advanced Menu provides advanced configuratio n settings for existing connections. At least one WAN connection must be configured before implem enting advanc ed WAN configuration features. At least one LAN group must be defined before implem enting advanced LAN confi guration features. Advanced Menu[...]

User Manual Page 25 of 92 Help Menu The Help Menu provides documentatio n about various router features. Help Menu[...]

User Manual Page 26 of 92 Basic Menu The options for the Basic Menu include:  Home  Quick Start Home The Home page provides a one-page su mmary about the Connection Inform ation, Router Information, and Local Network settings. Basic Home Connection Information The Connection Information pane gives you an idea about the status of your Internet[...]

User Manual Page 27 of 92 Router Information This pane provides all th e necessary information to determine the model, firmware version, build, Ethernet MAC Address, NAT status, and Firewall status. Local Network Information The Local Network pane displays the current IP address of the router. It also pr ovides the DHCP status, DHCP Range, and Ethe[...]

User Manual Page 28 of 92 Advanced Menu The Advanced Menu provides advanced c onfiguration options. These include:  WAN  LAN  Application  QoS  Routing  Security  Status  Diagnostics  System Password  Firmware Upgrade  Save Settings  Restart Router  Restore Default[...]

User Manual Page 29 of 92 WAN Wide Area Network refers to the c onfigurations you perform to est ablish an Internet connection. There are several types of WAN connections that require different settings. New Connection Your router supports the creation of new connections. If you have mult iple virtual connections, you may need to utilize the static[...]

User Manual Page 30 of 92 PPPoE Connection PPPoE is a common WAN conn ection type used to connect to t he Internet. PPP, or point-to-point protocol, is a method of establishing a network connection/session between network hosts. PPPoE is a protocol for encapsulating PPP frames in Ether net frames and is described in RFC 2516. PPPoE provides the abi[...]

User Manual Page 31 of 92 PPPoA Connection Another commonly used WAN connec tion type is PPPoA. PPPoA is al so known as RFC 2364. It is a method of encapsulating PPP packets in ATM cells that are carried over the DSL line. PPP, or point-to- point protocol, is a method of establishing a network connection/session between network hosts. It usually pr[...]

User Manual Page 32 of 92 Static Connection Static connection type is used whenever a known static IP address is assigned to the router. Additional addressing information such as the Subnet Mask and the Default Gatewa y must also be specified. Up to three Domain Name Server (DNS) addresses can be identified. These servers resolve the name of the co[...]

User Manual Page 33 of 92 DHCP Connection DHCP allows the router to automatically obtain the IP address from the server . This option is commonly used when the IP is dynamically assigned and is not known prior to assignment. New DHCP Connection Setup[...]

User Manual Page 34 of 92 Bridge Connection A bridge connection does not assign any IP address to the WAN interf ace. NAT and firewall rules are not enabled. This connection method makes the router act as a bridge for passing packets between the WAN interface and the LAN interface. New Bridge Connec tion Setup[...]

User Manual Page 35 of 92 ADSL Modulation ADSL Modulation allows you to select any combinat ion of DSL training modes. Leave the default value if you are unsure or the service provider did not provide this inf ormat ion. In most cases, this screen should not be modified. ADSL Modulation Connection Scan This feature helps users to detect the PVC set[...]

User Manual Page 36 of 92 Quickstart Click to open the Quickstart Setup page. Quickstart is the connecti on name of the default PPPoE WAN Connection. In this page, you can change the connection details. Quickstart[...]

User Manual Page 37 of 92 LAN The router is preconfigured to automatically provide an IP addre ss to each Ethernet device connected in the local area network (LAN). However, if you ar e familiar with your network setup, you can manually configure the LAN settings. LAN Configuration Your router’s default IP address and subnet mask are 192.168.1.1 [...]

User Manual Page 38 of 92 To configure the LAN groupings: 1. From the Advanced Menu , select LAN > LAN Configuration . 2. Select ETHERNET in LAN group 1 and then click < Remove . No packets will be sent to the ETHERNET interface because it does not belong to any LAN group. 3. Select ETHERNET from Interfaces and then click Add > under LAN g[...]

User Manual Page 39 of 92 LAN Group Configuration LAN Group Configuration allows you to configure setti ngs for each LAN group. Notice that you can also view the status of advanced services that can be applied to a LAN group. Green indicates that the service is enabled, while red indica tes that the service is disabled. LAN Group Configurati on Cat[...]

User Manual Page 40 of 92 subnet allows the router to support 254 users. If you want to support a larger number of users you can change the subnet mask. Default Gateway The default gateway is the routing device used to forward all traffic that is not addressed to a station within the local subnet. Your ISP provides you with the IP address of the de[...]

User Manual Page 41 of 92 DHCP relay function. When the router is configured as DHCP server, it assigns the IP addresses to the LAN clients. When the gateway is configured as DHCP relay, it is responsible for forwarding the requests and responses negotiated between the DHCP clients and the server. Relay IP The IP address of the DHCP relay server. S[...]

User Manual Page 42 of 92 LAN Clients LAN Clients allows you to view and add computers in a LAN group. Each com puter either has a dynamic or static (manually-configured) IP address. You can add a static IP address ( belonging to the router’s LAN subnet) using the LAN Clients page. Any existing static entry falling within the DHCP server's r[...]

User Manual Page 43 of 92 Applications Applications include:  Simple Network Management Protocol  Internet Group Management Protocol (IGMP) Proxy  TR-068 WAN Access  DNS Proxy  Port Forwarding  Bridge Filters  Web Access Control[...]

User Manual Page 44 of 92 Simple Network Management Protocol (SNMP) SNMP (Simple Network Management Protocol) is a troubleshooting and managem ent protocol, which uses the UDP protocol on port 161 to communica te between clients and servers. SNMP uses a manager MIB (management informati on base) agent solution to fulfill the network management need[...]

User Manual Page 45 of 92 IGMP Proxy IP hosts use Internet group management protocol (I GMP) to report their multicast group memberships to neighboring routers. Similarly, mu lticast routers use IGMP to discover which of their hosts belong to multicast groups. Your router supports IGMP pro xy that handles IGMP mess ages. When enabled, your router a[...]

User Manual Page 46 of 92 The IGMP Proxy page allows you to enable multic ast on available WAN and LA N connections. You can configure the WAN or LAN interf ace as one of the following:  Upstream The interface that IGMP requests from hosts are sent to the multicast router.  Downstream The interface data from the multicast router are sent to h[...]

User Manual Page 47 of 92 TR-068 WAN Access (Optional) The TR-068 WAN Access page enables you to give temporary permission to someone (such as technical support staff) to be abl e to access your router from t he WAN side. From the moment the account is enabled the user is expected to log in within 20 minutes, otherwise the account expires. Once the[...]

User Manual Page 48 of 92 DNS Proxy DNS Proxy determines the primary Domain Name Server and secondary DNS to be used. DNS Proxy To select the DNS Server Priority: 1. From the Advanced Menu , Select Application > DNS Proxy . 2. Select the DNS Server Priority :  Only Auto Dis covered DNS Servers  Only User Configured DNS Servers  Auto Dis[...]

User Manual Page 49 of 92 Port Forwarding Port forwarding (or virtual server) a llows you to direct incoming traffic to specific LAN hosts based on a protocol port number and protocol. Us ing the Port Forwarding page, you c an provide local services (for example, web hosting) for people on the Internet or pl ay Internet games. Port forwarding is co[...]

User Manual Page 50 of 92 If a rule is not in the list, you can create your own rule in the User category. To create a new rule, select User as the Category , and then click New . The Rule Management page opens. Enter Rule Name , Protocol , Port Start , Port End , and Port Map , and then click Submit . 6. Click Submit to temporarily activate the se[...]

User Manual Page 51 of 92 To enable DMZ Settings: 1. From the Advanced Menu , select Application > Port Forwarding . 2. Select DMZ . This opens the DMZ Settings page. 3. Select Enable DMZ . 4. Select the WAN Connection. 5. Select a LAN Group. 6. Select a LAN IP Address . 7. Click Submit to temporarily apply the settings. 8. To make changes perma[...]

User Manual Page 52 of 92 Bridge Filters The Bridge Filters allows you to enabl e, add, edit, or delete t he filter rules. When bridge filtering is enabled, each frame is examined again st every defined filter rule in sequence. When a match is found, the appropriate filtering action (allo w or deny) is per formed. Up to 20 filter rules are supporte[...]

User Manual Page 53 of 92 Web Access Control The Web Access Control page allows you to access t he router via the web from a remote location like your home or office. Web Access Control To configure Web Access: 1. From the Advanced Menu, s elect Application > Web Access Control . 2. Select Enable Web Access Control . 3. Select the Connection . 4[...]

User Manual Page 54 of 92 Quality of Service (QoS) Quality of service allows network a dministrators to configure the routers to meet the real time requirements for voice and video. Different networks use different QoS markings like:  ToS network: ToS bits in the IP header  VLAN networ k: priority bits in the VLAN header  DSCP network: use[...]

User Manual Page 55 of 92 The rules are: 1. CoS1 has absolute priority and is used for ex pedited forwarding (EF) traffic. This is always serviced till completion. 2. CoS2-CoS5 is used for assured forwarding (AF) clas ses. They are serviced in a strict round robin manner using the fo llowing priority scheme: CoS2 > CoS3 > CoS4 > CoS5 3. Co[...]

User Manual Page 56 of 92 Egress For packets going out of the router, the marki ngs (CoS) need to be translated to the mappings understood by the network domains. The reverse Co S and domain mapping is configured using the Egress. To access Egress , select QoS > Egress from the Advanced Menu . There are three Egress modes:  No Egress mode [...]

User Manual Page 57 of 92 Layer 2 The Egress Layer 2 page allows you to map the CoS of an outgoing packet to user priority bits, which is honored by the VLAN network. Again, this feature is only configurable on the WAN interfaces as VLAN is only supported on the WAN side in the current release. Layer 2 Field Description Interface Select the WAN int[...]

User Manual Page 58 of 92 Layer 3 Egress Layer 3 enables you to map CoS to ToS so that the priority ma rking of outgoing packets can be carried over to the IP network. Layer 3 Field Description Interface Select the WAN interface to configure the QoS for outgoing packets; LAN interface cannot be selected as VLAN is currently supported on the WAN sid[...]

User Manual Page 59 of 92 Ingress Ingress enables you to configure QoS for packets as soon as they come into the router. The domain mappings are converted to CoS (the common language) so that the priori ty marking is carried over. There are four Ingress modes:  Untrusted mode  Layer 2  Layer 3  Static Untrusted Mode Untrusted is the def[...]

User Manual Page 60 of 92 Layer 2 Layer 2 allows you to map an incoming packet with VLAN priority to CoS. This feature is only configurable on the WAN interfaces as VLAN is onl y supported on the WAN side in the current software release. Layer 2 Field Description Interface Select the WAN interface here to configure the CoS for incoming traffic. Onl[...]

User Manual Page 61 of 92 Layer 3 The Layer 3 page allows you to map ToS bits of inco ming packets from the IP network to CoS for each WAN/LAN interface. Layer 3 Field Description Interface For both WAN and LAN interfaces, you c an configure QoS for layer 3 (IP) data traffic. Class of Service This CoS field allows you to map in coming layer 3 WAN/L[...]

User Manual Page 62 of 92 Static The Ingress - Static page enables y ou t o configure a static CoS for all packets received on a WAN or LAN interface. Static To access Ingress Layer 3: From the Advanced Menu , select QoS > Ingress .[...]

User Manual Page 63 of 92 QoS Shaper Configuration The Shaper Configuration page is accessed by sele cting Shaper on the Adva nced main page. Three shaper algorithms are supported:  HTB  Low Latency Queue Discipline  PRIOWRR QoS Shaper Configurati on Note: Egress TCA is required if shaper is configured for that interface. Field Description[...]

User Manual Page 64 of 92 PRIOWRR This is a priority based weighted round robin algorithm operating on CoS2-CoS6. CoS1 queues have the highest priority and are not controlled by the WRR algorithm. Of the three shaping algorithms available on the Shaper Confi guration page, only one can be enabled at a time. An example of each c onfiguration is give[...]

User Manual Page 65 of 92 Example 2: Low Latency Queue Discipline Enabled In this second example, Low Latency Queue Discipli ne is enabled. CoS1 is not rate controlled (hence the field is disabled). CoS2 takes 100 Kbps when there are no CoS1 packets. CoS6 has 300 Kbps when there is no CoS1 or CoS2 packets. This is similar to the HTB queue disciplin[...]

User Manual Page 66 of 92 Example 3: PRIOWRR Enabled In this third example, PRIOWRR is enabled. Si nce PRIOWRR operates only on the number of packets being transmitted, the max rate field has been disa bled. Only percentage can be assigned to the CoS2 - CoS6. CoS1 is not rate controll ed (hence the field is not display ed). When there are no CoS1 p[...]

User Manual Page 67 of 92 Policy Routing Configuration The Policy Routing Configuration enables y ou to configure policy routing and QoS. Policy Routing Config uration Field Description Ingress Inter face The incoming traffic interface for a Policy Routing rule. Selections include LAN interfaces, WAN interfaces, Locally generated (traffic), and not[...]

User Manual Page 68 of 92 protocol first. Source MAC The MAC address of the traffic source. Local Routing MAC This field is enabled only when Locally Generated is selected in the Ingress Interface field. The mark for DNS traffic generated by diffe rent applications are described below:  Dynamic DNS: 0xE1  Dynamic Proxy: 0xE2  Web Server: 0[...]

User Manual Page 69 of 92 The following fields can be c onfigured for Policy Routing:  Destination IP address/mask  Source IP address/mask  Source MAC address  Protocol (TCP, UDP, ICMP, etc)  Source port  Destination port  Incoming interface  DSCP[...]

User Manual Page 70 of 92 Routing Routing options include:  Static Routing  Routing Table Static Routing If the router is connected to more than one network , you may need to set up a static route between them. A static route is a pre-defi ned pathway that network information must travel to reach a specific host or network. You can use static[...]

User Manual Page 71 of 92 Routing Table Routing Table displays the information used by routers when making packet-forwarding decisions. Packets are routed according to t he packet's destination IP address. Routing Table[...]

User Manual Page 72 of 92 Security Security options include:  IP Filters  LAN Isolation IP Filters IP filtering allows you to block specific applicati ons/services based on the IP address of the LAN device. In this page, you can block specific traffic (for example, block web a ccess) or any traffic from a host on your local network. A databas[...]

User Manual Page 73 of 92 To configure IP Filters: 1. From the Advanced Menu , select Security > IP Filters . 2. Select a LAN Group. 3. Select a LAN IP . If the desired LAN IP is not availabl e in the LAN IP drop-down menu, click New IP to add an IP. 4. Select Available Rules and then move them into Applied Rules. To select a rule, select a Cate[...]

User Manual Page 74 of 92 LAN Isolation LAN isolation allows you to disable the flow of packets between two LAN grou ps. This allows you to secure information in private portions of the LAN from other publicly accessible LAN segments. LAN Isolation To enable LAN Isolation: 1. From the Advanced Menu , select Security > LAN Isolation . 2. Check an[...]

User Manual Page 75 of 92 Status This chapter provides information about monitoring the router status and view ing product information. Your router allows you to view the following status and product information:  Connection Status  System Log  Remote Log  Network Statistics  DHCP Clients  QoS Status  Modem Status  Product I[...]

User Manual Page 76 of 92 Connection Status Connection Status displays the type of protocol , the WAN IP address, t he connection state and the duration of your Internet connection. To view the Connecti on Status from the Advanced Menu , select Status > Connection Status . Connection Sta tus[...]

User Manual Page 77 of 92 System Log System Log displays the rout er log. Depending on the severity level, the info rmation log will generate log reports to a remote host if remote logging is enabled. To view the System Log from the Advanced Menu , select Status > System Log . System Log[...]

User Manual Page 78 of 92 Remote Log Remote Log allows you to forward all logged informat ion to one (or more) remote computer. The type of information forwarded to the remote computer depends on the Log level. Each log message belongs to a certain log level, which indicates the severity of the event. When you configure remote logging, you must spe[...]

User Manual Page 79 of 92  Info Events or non-error conditions of int erest.  Debug Software debugging message. Specify this leve l only when directed by a technical support representative. 3. Enter the IP Address where the log will be sent to. 4. Click Add . 5. Click Submit . The IP address will appear in the Select a logging destination dro[...]

User Manual Page 80 of 92 Network Statistics The Ethernet and DSL line statuses ar e displayed in this page. To view the Network Statistics from the Advanced Menu , select Status > Network Statistics . There are three ca tegories for Network Statistics. These include Ethernet and DSL. Ethernet DSL[...]

User Manual Page 81 of 92 DHCP Clients DHCP Clients displays the MAC address, IP address, host name, and lease time. To view the DHCP Clients from the Advanced Menu , select Status > DHCP Clients . The DHCP Clients are displayed according to LAN Group. DHCP Clients[...]

User Manual Page 82 of 92 QoS Status This page displays the Quality of Service and the packet statistics. To view the QoS Status from the Advanced Menu , select Status > QoS Status . QoS Status[...]

User Manual Page 83 of 92 Modem Status This page displays the model status. To view the Modem Status from the Advanced Menu , select Status > Modem Status . Modem Status[...]

User Manual Page 84 of 92 Product Information This page displays the product information and softwar e versions. To view the Product Information from the Advanced Menu , select Status > Product Information . Product Inform ation[...]

User Manual Page 85 of 92 Diagnostics Diagnostic Test is used for investi gating whether the router is properly connected to the WAN Network. This test may take a few seconds to complete. To perform the test, select your connection from the list and click Test . Before running this test, make sure you have a valid DSL link. Diagnostics To run diagn[...]

User Manual Page 86 of 92 4. Click Test . The ping results are displayed in the page. If the ping test was successful, it means that the TCP/IP protocol is up and running. If the Ping test failed, you should restart the router. Full Modem Test This test is used to check if your m odem is properly connected to the network. To perform a Full Modem te[...]

User Manual Page 87 of 92 System Password Anyone who can access the web interface can be consi dered an Administrator. To restrict access to the web interface, you need to set the System Password. System Password Changing the System Password To change the System Password: 1. From the Advanced Menu , select System Password . This opens the System Pa[...]

User Manual Page 88 of 92 Changing the Timeout Settings To change the timeout settings: 1. From the Advanced Menu , select System Password . 2. Select Enable Authentication . 3. Enter the number of minutes in the Idle Timeout text field. 4. To temporarily implement the settings, click Submit . 5. To make changes permanent, click Save Settings .[...]

User Manual Page 89 of 92 Firmware Upgrade When updating the firmware, make sure you are usi ng the correct file. Once the upgrade is complete the router will reboot. You will need to log back into t he router after the firmwa re upgrade is completed. Firmware upgrade To update the firmware: 1. From the Advanced Men u, select Firmware Upgrade . Thi[...]

User Manual Page 90 of 92 Save Settings Select to apply configur ation changes permanently. Restart Router Select to restart the router. Restore to Default Select to reset the router to its factory default settings.[...]

User Manual Page 91 of 92 Help Menu To access Help, select the Help Menu . The Help Menu provides docum entation for topics that include:  PPP Connection  LAN Configuration  LAN Clients  Firewall  Bridge Filters  UPnP (Universal Plug and Play)  RIP (Routing Information Protocol)  QoS (Quality of Service)[...]

User Manual Page 92 of 92 Safety Precautions  Do not open, service, or change any component.  Only qualified technical specialists are allowed to service the equipment.  Observe safety precautions to avoid electric shock.  Check voltage before connecting to the power supply. Connecting to the wrong voltage will damage the equipment. Rem[...]