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Teracom T2-B-Gawv1.4U10Y-BI, User Manual

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Teracom T2-B-Gawv1.4U10Y-BI User Manual Download Page 114

User Manual for T2-B-Gawv1.4U10Y.BI 

Teracom Limited                                111                          An ISO Certificed Company 

3.8.5   Wireless 

This page displays the current status and configuration of the wireless port. 

3.8.5.1 Basic 

Choose 

Port Statistics

 > 

Wireless

 and the following page appears. In this page, 

you can view the the information of wireless port. 

 

3.8.5.2 Advanced 

Click

 Advanced 

in the 

Wireless Port Configuration 

page and the following page 

appears. In this page, you can view the following information of the wireless port. 

Summary of Contents for T2-B-Gawv1.4U10Y-BI

Page 1: ......

Page 2: ...9 3 2 Login in to the Modem 10 3 3 Home 11 3 3 1 Overview 11 3 3 2 System Log 15 3 3 3 Troubleshooting 16 3 4 Configuration 17 3 4 1 Wireless Network 17 3 4 2 Internet Connection 23 3 4 3 Local Networ...

Page 3: ...3 109 3 8 5 Wireless 111 3 9 Admin 113 3 9 1 Firmware Upgrade 113 3 9 2 Back Restore 114 3 9 3 Reboot 115 3 9 4 Remote Access 115 3 9 5 Lan Access 116 3 9 6 Change Password 117 3 9 7 Time Zone 117 4 N...

Page 4: ...EEE 802 11 802 11b g specifications WEP WPA and WPA2 security specifications 1 1 Packing List 1 x T2 B Gawv1 4U10Y BI 1 x External Splitter 1 x Power Adapter 2 x Telephone Cables RJ 11 1 x Ethernet Ca...

Page 5: ...because any wrong connection may cause power or fire risk Do not place this device on an unstable surface or support 1 3 LEDs and Interfaces Front panel The following table describes the LEDs of the...

Page 6: ...N connection On The WPS is active Blinks The WPS is active waiting for the remote client to establish connection WPS Green Off The WPS is inactive On The VoIP phone is registered Blinks The phone is o...

Page 7: ...econds then release it The configuration is restored to the factory defaults WPS WPS switch switch on or switch off the WPS function USB USB Host Port for connecting the device those have USB Device P...

Page 8: ...to the DSL interface of the device Phone Connect to a telephone set Step 2 Connect the LAN interface of the device to the network card of the PC through an Ethernet cable MDI MDIX Note Use twisted pa...

Page 9: ...to the splitter Note When connection 2 is used the filter must be installed close to the telephone cable See Figure 2 Do not use the splitter to replace the filter Installing a telephone directly bef...

Page 10: ...g up WAN and LAN connections WAN Connection Your PC can connect to the Internet by ADSL Connect its Internet socket to the wall socket through a telephone cable If it has an Ethernet socket for the wi...

Page 11: ...the shortcut menu 3 On the General tab select the Internet Protocol TCP IP component and click Properties The Internet Protocol TCP IP Properties window appears 4 Select Obtain an IP address automatic...

Page 12: ...ch Order box and that no suffix is defined in the Domain Suffix Search Order box Linux 1 Login in to the system as a super user by entering su in the terminal window 2 Enter vi etc sysconfig network s...

Page 13: ...ccessfully the connection between the modem and PC is normal Note When you manage the device through Web you must keep the power of the device on Otherwise the device may be damaged 3 2 Login in to th...

Page 14: ...settings You can also diagnose the device system 3 3 Home Click Home to enter system information page On the left page there are three options Overview System Log and Troubleshooting 3 3 1 Overview Th...

Page 15: ...e Overview Basic and the following page appears The following table describes the parameters of this page Field Description System Information Model Name It displays the model name of the modem Firmwa...

Page 16: ...nique name to identify the modem in the wireless LAN LAN Port Mac Address The MAC address of the modem IP Address The IP address of the modem DHCP server The current status of the DHCP server Voice St...

Page 17: ...User Manual for T2 B Gawv1 4U10Y BI Teracom Limited 14 An ISO Certificed Company...

Page 18: ...ection Connected Standard The status of the line mode Status It contains the configuration information about ARP DHCP Traffic Stats and Wireless Connection Note The rate is measured under a zero kilom...

Page 19: ...ing the diagnostic tests The tests results can be used to identify all the problems that are related to your DSL connection or the configuration of the modem Enter a well known site for example IP 10...

Page 20: ...IPv6 Prefix You can modify LAN and WAN settings such as PVC LAN port and DHCP 3 4 1 Wireless Network A wireless local area network WLAN provides a flexible data communications system that you can use...

Page 21: ...in order to prevent the modem from transmitting the illegal frequencies The following table describes the parameters of this page Field Description Select Profile Choose the security specification You...

Page 22: ...ect Yes the wireless adaptor will fail to auto search the SSID The auto searching list does not display the SSID However if you know the SSID you can set the connection manually If you select No the a...

Page 23: ...llowing table describes the parameters of this page Field Description Fragmentation Threshold The fragmentation threshold is a way of limiting the size of packets frames transmitted over the network I...

Page 24: ...handshake does not occur Because the data frames are fragmented before they reach the RTS size NitroXM PiggyBack Piggyback refers to interleaving the TCP Ack return flow with the TCP data flow 3 4 1 3...

Page 25: ...wireless network card is installed in the PC The following describes the example of wireless network configuration Step 1 In the Control Panel page double click Network Connections The following page...

Page 26: ...manage the modem through graphical user interface GUI or Telnet 3 4 2 Internet Connection This page displays the information of the PVC after some effective configuration 3 4 2 1 Connections Choose C...

Page 27: ...nection Note In the Connections page the default configuration of the modem supports six PVCs The modem can be configured with eight PVCs at most If you add more than eight PVCs it refuses to add Dele...

Page 28: ...User Manual for T2 B Gawv1 4U10Y BI Teracom Limited 25 An ISO Certificed Company Step 2 The system deletes bridge_0_32 After the deletion the following page appears...

Page 29: ...B Gawv1 4U10Y BI Teracom Limited 26 An ISO Certificed Company Modify an existing Internet connection The following describes an example of modifying bridge_8_35 Step 1 In the following page click to...

Page 30: ...User Manual for T2 B Gawv1 4U10Y BI Teracom Limited 27 An ISO Certificed Company Step 2 The following page appears In this page you can modify VPI VCI and service category...

Page 31: ...ween two points in an ATM network Its valid value is from 32 to 65535 Service Category You can choose UBR With PCR CBR Non Realtime VBR or Realtime VBR UBR with PCR Unspecified bite rate with peak cel...

Page 32: ...the maximum burst size range is from 0 to 1000000 Sustainable Cell Rate Sustainable cell rate SCR is an ATM parameter for traffic management For variable bit rate VBR connections SCR determines the lo...

Page 33: ...0 An ISO Certificed Company Add Internet connection The following describes an example of adding PVC 0 32 Step 1 In the following page click Add to add PVC 0 32 Step 2 The following page appears In th...

Page 34: ...ween two points in an ATM network Its valid value is from 32 to 65535 Service Category You can choose UBR With PCR CBR Non Realtime VBR or Realtime VBR UBR with PCR Unspecified bite rate with peak cel...

Page 35: ...ll rate range is from 1 to 7099 and the maximum burst size range is from 0 to 1000000 Sustainable Cell Rate Sustainable cell rate SCR is an ATM parameter for traffic management For variable bit rate V...

Page 36: ...0Y BI Teracom Limited 33 An ISO Certificed Company Sample 1 PPP over ATM PPPoA Step 1 Select PPP over ATM PPPoA protocol and set the encapsulation type to VC MUX depending upon the uplink equipment ge...

Page 37: ...ddress If you want to manually enter the WAN IP address select it and enter the IP address provided by your ISP Enable NAT Select it to enable network address translation NAT function of the modem If...

Page 38: ...ded by your ISP Confirm Password Confirm the correct password provided by your ISP Session established by Select a PPP connection mode according to your practice Always On After the device is powered...

Page 39: ...uration Internet Connection Connections Click Connect in the Internet Connection Configuration page to start the PPP connection If the device does not detect the data flow of the user continuously wit...

Page 40: ...for T2 B Gawv1 4U10Y BI Teracom Limited 37 An ISO Certificed Company Check the configuration according to the requirements When you ensure that the configuration is correct click Apply The following p...

Page 41: ...M for IPv6 PPPoA IPv6 protocol and set the encapsulation type to VC MUX depending upon the uplink equipment generally VC MUX Then click Next Step 2 In this example the modem must be configured as buil...

Page 42: ...our ISP Enable NAT Select it to enable network address translation NAT function of the modem If you do not enable NAT and want to the modem to access the Internet normally you must add a route on the...

Page 43: ...ent is abnormal the PPP connection will not be broken Dial on Demand After the device is powered on the PPP dial up performs automatically If the device does not detect the flow of the user continuous...

Page 44: ...ain if you select manually connect Enter the waiting time in the field Step 4 Click Next and the following page appears In this page you can confirm the modification Sample 3 PPP over Ethernet PPPoE S...

Page 45: ...iced Company Step 2 In this example select Obtain an IP address automatically Enable NAT and Add Default Route The following table describes the parameters of this page Field Description Enable Disabl...

Page 46: ...by up link equipment such as BRAS Use the following IP address If you want to manually enter the WAN IP address select it and enter the IP address provided by your ISP Enable NAT Select it to enable...

Page 47: ...Enter the correct user name provided by your ISP Password Enter the correct password provided by your ISP Confirm Password Confirm the correct password provided by your ISP Session established by Sele...

Page 48: ...rts the PPP for dial up Manually Connect Choose Configuration Internet Connection Connections Click Connect in the Internet Connection Configuration page to start the PPP connection If the device does...

Page 49: ...T2 B Gawv1 4U10Y BI Teracom Limited 46 An ISO Certificed Company Step 5 Check the configuration according to the requirements When you ensure that the configuration is correct click Apply The followi...

Page 50: ...ple 4 PPP over Ethernet for IPv6 PPPoE IPv6 Step 1 Select PPP over Ethernet for IPv6 PPPoE IPv6 protocol Set to LLC SNAP encapsulation type and Bridged encapsulation mode Then click Next Step 2 In thi...

Page 51: ...ss automatically Through PPP dial up to obtain an IP address assigned by up link equipment such as BRAS Use the following IP address If you want to manually enter the WAN IP address select it and ente...

Page 52: ...Enter the correct user name provided by your ISP Password Enter the correct password provided by your ISP Confirm Password Confirm the correct password provided by your ISP Session established by Sele...

Page 53: ...rts the PPP for dial up Manually Connect Choose Configuration Internet Connection Connections Click Connect in the Internet Connection Configuration page to start the PPP connection If the device does...

Page 54: ...SO Certificed Company Sample 5 RFC2684 IPv4 Step 1 Select RFC2684 IPv4 protocol Set to LLC SNAP encapsulation type and Bridged encapsulation mode Then click Next Step 2 In this example select Obtain a...

Page 55: ...nd enter the IP address provided by your ISP Enable NAT Select it to enable network address translation NAT function of the modem If you do not enable NAT and want to the modem to access the Internet...

Page 56: ...An ISO Certificed Company Sample 6 RFC2684 IPv6 Step 1 Select RFC2684 IPv6 protocol Set to LLC SNAP encapsulation type and Bridged encapsulation mode Then click Next Step 2 In this example select Obta...

Page 57: ...Pv6 address assigned by up link equipment such as BRAS Use the following IPv6 address If you want to manually enter the WAN IPv6 address select it and enter the IPv6 address provided by your ISP Add D...

Page 58: ...An ISO Certificed Company Sample 7 Bridging Step 1 Select Bridging protocol Set to LLC SNAP encapsulation type and Bridged encapsulation mode Then click Next Step 2 In this example select Obtain an IP...

Page 59: ...se the following IP address If you want to manually enter the WAN IP address select it and enter the IP address and subnet mask provided by your ISP Obtain DNS server address automatically Select it t...

Page 60: ...T2 B Gawv1 4U10Y BI Teracom Limited 57 An ISO Certificed Company Step 4 Check the configuration according to the requirements When you ensure that the configuration is correct click Apply The followi...

Page 61: ...or T2 B Gawv1 4U10Y BI Teracom Limited 58 An ISO Certificed Company 3 4 2 2 ADSL Click ADSL in the Internet Connection Configuration page and the following page appears In this page you can modify ADS...

Page 62: ...ual for T2 B Gawv1 4U10Y BI Teracom Limited 59 An ISO Certificed Company Click Basic Attributes and the following page appears It lists all specific ADSL attributes In this page you can configure the...

Page 63: ...Company Defaults There are five options Choose one line mode you need The default setting checks the most modulation modes The modem negotiates the modulation mode with the DSLAM The following table d...

Page 64: ...uplink of Annex M can reach 2 Mbps and Annex A can only reach 1 Mbps If you want to take the settings effect immediately you should select Start in ActiveteLine field 3 4 2 3 MAC Spoofing MAC spoofing...

Page 65: ...LAN In this page you can configure the local network 3 4 3 1 IPv4 Address Choose Configuration Local Network LAN and the following page appears In this page you can set the IP address and subnet mask...

Page 66: ...selected After you select it you are required to enter IP Address and Subnet Mask MTU The maximum transmission unit By default it is 1500 Enter the required parameters and click Apply to take it effec...

Page 67: ...Network Configuration page and the following page appears The DNS relay responds to DNS requests from the LAN side Usually it transmits DNS requests to other DNS servers to parse the addresses of the...

Page 68: ...est to a DNS server to obtain the corresponding IP address immediately The DNS server attempts to look up the domain name in its local host database immediately Click DNS LAN Host in the Local Network...

Page 69: ...nection instead of a regular phone line 3 4 4 1 System Settings Choose Voice Configuration System Settings and the following page appears In this page you can view and modify the settings of system wi...

Page 70: ...Gawv1 4U10Y BI Teracom Limited 67 An ISO Certificed Company 3 4 4 2 SIP Click SIP in the VoIP Configuration page and the following page appears In this page you can view and modify the related setting...

Page 71: ...ed Company Enter the proxy and the registrar in the corresponding fields The proxy can be the IP address of the SIP server Generally the registrar is as same as proxy Click Go To Advanced view and the...

Page 72: ...An ISO Certificed Company 3 4 4 3 End Points Click End Points in the VoIP Configuration page and the following page appears In this page you can view and modify end point settings such as the login n...

Page 73: ...vides valid time for forward calling and it supports three way conferences Take the basic settings for example Click and the following page appears Enter End Point Name such as 755222666 which is the...

Page 74: ...oes well 3 4 4 4 Dialing Plan Click Dialing Plan and the following page appears In this page you can view and modify digit map Digit map allows you to set the various dialing codes that are used to ma...

Page 75: ...d Company Step 1 Choose Configuration Voice Configuration Select a PVC from the IP Interface Name drop down list such as iplan Then select the region Step 2 Click Apply and the following page appears...

Page 76: ...nual for T2 B Gawv1 4U10Y BI Teracom Limited 73 An ISO Certificed Company Step 3 Click Apply to take the settings effect Step 4 Click End Points in the Voice Configuration page and the following page...

Page 77: ...nt Name The call up number Login Name The authentication name for registering VoIP call Password The authentication password for registering VoIP call Admin State The service state Usually you should...

Page 78: ...r and the following page appears In this page you can set the status of the DHCP server The following table describes the parameters of this page Field Description DHCP server is currently Select it t...

Page 79: ...t be disabled for adding a new DHCP server or deleting an existing DHCP server 3 4 5 2 Server Settings Click Server Settings and the following page appears In this page you can modify the DHCP server...

Page 80: ...unit value is set in second By default it is 86400 seconds 24 hour Default lease time It is the time that the DHCP server leases IP address to the DHCP client After the preset time the lease IP addres...

Page 81: ...User Manual for T2 B Gawv1 4U10Y BI Teracom Limited 78 An ISO Certificed Company Click Add in the DHCP Classes page and the following page appears...

Page 82: ...User Manual for T2 B Gawv1 4U10Y BI Teracom Limited 79 An ISO Certificed Company Enter the class name and class data and select class type Click Add to show the following page...

Page 83: ...4U10Y BI Teracom Limited 80 An ISO Certificed Company Click in the Subnet Pools page You can attach an existent class name and set its attribute Click Apply and the following page appears In this pag...

Page 84: ...y Choose Configuration DHCP Relay and the following page appears In this page you can modify the DHCP relay settings or add DHCP server adress or interfaces running DHCP relay DHCP relay is used to se...

Page 85: ...er address in the DHCP Relay Settings page you must list all interfaces that the DHCP relay needs to bind to for both sending and receiving packets For example it is not enough to only bind to a LAN i...

Page 86: ...and Virtual Server 3 5 1 IP Filtering Choose Security IP Filtering and the following page appears In this page you can specify the IP packet filtering rules to prevent unsolicited access from the Int...

Page 87: ...include the network or Internet protocol the packet carries the direction in it is traveling Add an IP filter rule The procedure for adding an IP filter rule is as follows Step 1 Enable IP Filtering...

Page 88: ...IP Filter Configuration page you can view the result of the IP filter configuration 3 5 2 Port Forwarding Choose Security Port Forwarding and the following page appears In this page you can create mo...

Page 89: ...ome from the WAN Interface ipwan is forwarded to the host with IP address 192 168 1 2 If you select User defined with a self defined name you can configure the parameters in the page 3 5 3 Virtual Ser...

Page 90: ...3 6 Services Click Services to enter service configuration page On the left page there are five options IGMP Proxy IPv4 Routing IPv6 Routing Quality of Service and Mac Filtering 3 6 1 IGMP Proxy Choos...

Page 91: ...v4 Routing and the following page appears In this page you can configure static route and dynamic routing A default route is used to send IP packages of unknown destination address to the default gate...

Page 92: ...ination IP address and netmask You also need to enter the gateway IP address or the interface through which the packets are forwarded in the corresponding fields The interface can be iplan ipwan or yo...

Page 93: ...ion Mode You can choose Provide Active Passive and Send only Choose Active for transmitting and receiving RIP interactive information Choose Passive for only receiving information Choose Send Only for...

Page 94: ...x length is not larger than 128bit Forward packets to Select the packet route You can select the packets are forwarded to the gateway or WAN interface If set to gateway you need to enter the gateway a...

Page 95: ...ited 92 An ISO Certificed Company Click Add and the following page appears In this page you can specify quality of service QoS rules to upstream traffic All of specified conditions in the traffic rule...

Page 96: ...User Manual for T2 B Gawv1 4U10Y BI Teracom Limited 93 An ISO Certificed Company...

Page 97: ...enable MAC filter rules the modem serves as a firewall that works at layer 2 The following describes the example of the Ethernent transport 3 6 5 1 Rule Click Rule in the Mac Filter Configuration page...

Page 98: ...ot equal to INRANGE Include the range EXRANGE Exclude the range The source MAC value is 00 1E E3 00 2B 1C that is the Ethernet physical address The destination MAC value is 00 1E E3 00 2D BC After fin...

Page 99: ...hen click to edit the p2 In this page you can attach or detach more than one filtering rules to a profile 3 6 5 3 Transport Choose Mac Address Transport and the following page appears In this page you...

Page 100: ...ompany Before attaching the filtering profile to the specified transport the profiles and rules should be configured For example click of the Ethernet transport You can configure p1 attach Tx Path for...

Page 101: ...dding the rules Secondly attaching them to the profile Then attaching the profiles to the specified transport 3 7 DSL Home Click DSL Home to enter DSL home page On the left page there are two options...

Page 102: ...dem to validate the certificate from the ACS when using the certificate based authentication Username Username is used to authenticate the modem when establishing a connection to the ACS using the CWM...

Page 103: ...nly to adhere to the specified periodic inform interval Parameter Key The value of the parameter key argument from the most recent set parameter values add object or delete object method call from the...

Page 104: ...s the CWM parameters received from CWMP application 3 8 Port Statistics Click Port Statistics to enter port statistics page On the left page there are eight options Voipfex0 Voipcmdstat DSL Ethernet0...

Page 105: ...meters of this page Field Description Jitter Dynamic Provide jitter buffer adjustment if it is true Reset Defaults Reset to the default values after rebooting 3 8 1 2 Advanced Click Advanced in the Vo...

Page 106: ...User Manual for T2 B Gawv1 4U10Y BI Teracom Limited 103 An ISO Certificed Company...

Page 107: ...e Voipfxs0 Port Configuration page can be set from the CLI Enter port voipfxs0 set The attributes is displayed as the output of this command Its function depends on the configuration of the DSLAM and...

Page 108: ...4U10Y BI Teracom Limited 105 An ISO Certificed Company 3 8 2 2 Advanced Click Advanced in the Voipcmdstat Port Configuration page and the following page appears In this page you can view the the infor...

Page 109: ...mmand Its function depends on the configuration of the DSLAM and the capability of the central office the modem connected to 3 8 3 DSL This page displays the current status and configuration of the DS...

Page 110: ...0Y BI Teracom Limited 107 An ISO Certificed Company The following table describes the parameters of this page Field Description Driver Version The information of driver version APIVersion Application...

Page 111: ...the running estate of the application program Reset Defaults Reset to the default values after rebooting 3 8 3 2 Advanced Click Advanced in the DSL Port Configuration page and the following page appe...

Page 112: ...displays the current status and configuration of the Ethernet port The modem has four Ehternet ports Because they are similar we describe the example of one Ethernet port If the Ethernet port is work...

Page 113: ...iguration page and the following page appears In this page you can view the following information of the Etherent port Note Some of the attributes displayed in the Ethernet0 Port Configuration page ca...

Page 114: ...uration of the wireless port 3 8 5 1 Basic Choose Port Statistics Wireless and the following page appears In this page you can view the the information of wireless port 3 8 5 2 Advanced Click Advanced...

Page 115: ...User Manual for T2 B Gawv1 4U10Y BI Teracom Limited 112 An ISO Certificed Company Note...

Page 116: ...page On the left page there are seven options Firmware Upgrade Back Restore Reboot Remote Access Lan Access Change Password and Time Zone 3 9 1 Firmware Upgrade Choose Admin Firmware Upgrade and the...

Page 117: ...awv1 4U10Y BI Teracom Limited 114 An ISO Certificed Company 3 9 2 Back Restore Choose Admin Back Restore and the following page appears Click Backup to save the current system configuration Conexant i...

Page 118: ...9 4 Remote Access Choose Admin Remote Access and the following page appears you can open the remote access port for someone to login Remote access a management station that is a host or range of host...

Page 119: ...or T2 B Gawv1 4U10Y BI Teracom Limited 116 An ISO Certificed Company 3 9 5 Lan Access Choose Admin Lan Access and the following page appears It is used to enable or restrict LAN side management access...

Page 120: ...t is advisable that the password should be changed to keep the system secure Keep the your password If you forget the password you need to reset the modem and reset to the factory defaults 3 9 7 Time...

Page 121: ...nfiguration page In this page you can modify the SNTP server settings You can add a server by using host name or IP address It starts the synchronization process automatically if it exists a effective...

Page 122: ...e SNTP Server It takes effective if the ping is successful Click to delete a single server association from the client list Sample 2 Add IP address of the SNTP server Before adding IP address you shou...

Page 123: ...built in PPPoA NAT The encapsulation of the BRAS downlink port is PPP over ATM The authentication is CHAP PAP The IP address is 136 1 1 1 The IP pool is 136 1 1 and the IP address of uplink port is 10...

Page 124: ...ser Name and Password page enter the Broadband User Name and Password provided by your ISP Select a Session established by according to your practices In this example select Always on Then click Next...

Page 125: ...s pool is 192 168 1 2 254 The functions are enabled by default and the PC is configured to obtain IP and DNS addresses dynamically Setting 1 Open the network browser and enter 192 168 1 1 in the addre...

Page 126: ...and the private address of the PC is translated to the public address of 20 1 1 112 for accessing the ISP The IP address of the PC can be fixed as in this example or assigned through DHCP server of t...

Page 127: ...IP Assigned by B RAS D H C P Server 139 1 1 1 DH C P 139 1 1 0 10 61 92 157 Description In this example the modem is connected to the DSLAM through PVC 8 81 and the access mode is the MER NAT The dow...

Page 128: ...ally and Enable NAT Click Next 5 Check the network configuration and ensure that all the settings are consistent with the data provided by your ISP Then click Apply After the configuration is successf...

Page 129: ...address bar to log in to the modem 2 Choose Configuration Internet Connection Connections Set VPI VCI to 8 81 and click Next 3 In the Configure Connection Type page select RFC 1483 protocol Set the en...

Page 130: ...is 136 1 1 1 The IP pool is 136 1 1 The IP address of the uplink port is 10 61 62 157 The PC to the modem obtains its public address dynamically assigned by BRAS through PPPoE dial up Setting 1 Open...

Page 131: ...User Manual for T2 B Gawv1 4U10Y BI Teracom Limited 128 An ISO Certificed Company...

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