Nortel Networks SRG50 manual SRG installation and configuration summary

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24Chapter 2 SRG50 overview

Automatic registration with the main office

When configured as a branch office user set, an IP telephone at the SRG automatically attempts to register with the main office when:

•The phone is in local mode because of loss of connectivity with the main office, and the SRG is redirecting it back to the main office because connectivity has been reestablished (see Loss of WAN or VoIP connectivity on page 24).

•The phone is in local mode because Test Local Mode was invoked and the timer has expired or the Exit button is pressed.

•The phone is in local mode, the main office is a CS 1000, and this is the first time that the phone has been redirected to the main office.

The IP telephone can fail to register with the main office for several reasons. These are detailed in Probable causes for redirection failure on page 85.

Loss of WAN or VoIP connectivity

The WAN or VoIP connectivity between the main office and the SRG can become unavailable if, for example, router failure occurs, the main office becomes unavailable, a WAN failure occurs, or the VoIP trunks reach capacity. When VoIP connectivity is lost, each IP telephone loses its connection with the main office terminal proxy server. The IP telephones reboot and reregister at the SRG, placing them in local mode. If enabled, call forwarding to the main office is automatically cancelled.

The IP telephones remain under the control of the SRG until VoIP connectivity is confirmed. When confirmation is received, the IP telephones are automatically redirected to the main office; redirection requires no user intervention. If the telephone is busy at the time that connectivity is reestablished, the SRG redirects the phone when it is free.

Test Local Mode

Test Local Mode is a facility that allows the IP telephone to be redirected back to the SRG when it is in normal mode. This forces the IP telephone to go into local mode and allows the telephone user or system administrator to test local mode operation without taking down the VoIP trunks to the main office. Implementation of Test Local Mode depends on the main office call server. For more information, see CS 1000 considerations on page 33.

SRG installation and configuration summary

The SRG50 Configuration Guide provides information specific to configuring a BCM50 as an SRG. Information pertaining to generic BCM50 practices and procedures is provided in the BCM50 documentation suite.

Generally, SRG50 activities leverage an installer’s general knowledge of BCM50 activities. However, Nortel recommends that the BCM50/SRG50 site engineer and installer familiarize themselves with SRG-specific requirements before starting any installation activities.

NN40140-500

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Contents SRG50 Configuration Guide Copyright 2006-2008 Nortel Networks, All Rights Reserved SRG50 Configuration Guide Task ListNN40140-500 Contents Fallback configuration Gatekeeper routing Glossary NN40140-500 Getting started About this guideAudience AcronymsGetting started Acronyms used in this guide Sheet 2 Symbols and conventions used in this guide Command line prompts on display telephonesGetting started Convention Example Used for Word in a special font shownRelated publications Convention Example Used forHow to get help Getting Help from the Nortel Web siteGetting started NN40140-500 Features SRG 1.5 on BCM SRG50 400 SRG50 overviewBCM50 default IP addresses SRG50 creationPort IP address Subnet mask BCM50 default user names and passwords SRG50 keycode activationTo activate the SRG keycode Click Load FileSRG50 and BCM50 features comparison To reboot the systemClick Reboot BCM50 System To verify that the SRG has been successfully createdSupported devices SRG50 overview Comparison of BCM50 and SRG50 Sheet 2SRG50 terminology SRG50 terminology Sheet 1Term Description Normal mode Coordination with the main office call serverSRG operating modes SRG50 overview SRG50 terminology Sheet 2Normal mode Local mode Local modeSRG installation and configuration summary Automatic registration with the main officeSRG50 overview Process map for installing and configuring an SRG Foundation configuration Configuration System IP SubsystemConfiguration Resources Application Resources Configuration Telephony Global SettingsIP telephone configuration Task summaryDialing plan configuration VoIP trunk configurationConfiguration Telephony Sets All DNs Configuration Telephony Lines Target LinesConfiguration Telephony Lines Active VoIP Lines Configuration Telephony Lines Active Physical LinesCall routing configuration Redirection and call forward configurationConfiguration Telephony Dialing Plan Routing Task summary NN40140-500 CS 1000 considerations CS 1000 and SRG terminology comparisonCS 1000 considerations Comparison of CS 1000 and SRG terms and contexts Sheet 1AC1 Normal and local mode overview Survivability Recovery to normal mode Testing the telephone in local modeVirtual trunk capacity Vacant Number Routing VNRBandwidth management Network Bandwidth Management Nbwm Adaptive Network Bandwidth Management AdbwmAlternative Call Routing ACR Bandwidth management configuration NBWM, ADBWM, To configure SRG for Nbwm and AdbwmTo configure Alternative Call Routing with did trunks Ensure that the DN Type is Public UnknownEmergency Services Access ESA configuration To configure Emergency Services Access To configure on-site notificationS1000 Main Office Settings panel S1000 Main Office Settings Sheet 1CS 1000 information for the SRG S1000 Main Office Settings Sheet 2 To datafill the S1000 Main Office Settings panel CS 1000 considerations S1000 Main Office Settings Sheet 3MO Access Code Length Field Values Description Node IDIP telephones redirection IP telephones numbers and modelsIP telephone numbers and models Sheet 1 S1000 IP Terminal Details panel SRG S1000 IP Terminal Details fields Sheet 1Field Values Description HardwareTo enter the Motn and Buid To redirect the telephone to the main office call serverField Values Description Firmware VersionIP telephone settings Configuration settings for redirected IP PhonesParameter Setting Firmware upgrade Firmware upgrade procedureSupported firmware Supported IP clients and firmware versionsCS 1000 considerations NN40140-500 IP telephones setup and configuration Registration passwordTo set the IP telephone registration password IP telephones setup and configuration Password registration parametersLocal mode indication IP telephone codec and jitter settingsTo change local mode indication Telephone DN records configuration To configure DN records for redirected IP telephonesIP telephones setup and configuration Select the Capabilities and Preferences tab Model ButtonReceived numbers configuration To map received numbers to the DNDhcp settings configuration To configure Dhcp settings for SRG operationCall forwarding options Configuration settings for redirected phones Test Local ModeTo activate Test Local Mode Configuration settings for redirected IP telephonesFeatures in local mode To exit Test Local Mode and return to Normal ModeReceiver volume Delayed ring transferEmergency Services Support Alarm setHeld line reminder Language and ContrastIP telephones setup and configuration NN40140-500 Setting up the private VoIP network IP networking, SRG to WAN, main office to WANSetting up the private VoIP network VoIP trunksBasic parameters Basic parameters Sheet 1Parameter Value Context Setting up the private VoIP network Basic parameters Sheet 2 Private dialing planTo enable Mcdn TAT Meridian Customer Defined Network McdnQoS settings codec, jitter buffer, and related items Main office QoS settings Sheet 1Media parameter Settings SIP settings To enter the QoS settings for VoIP trunks Modules panel, IP Trunks SRG50 Configuration GuideVoIP trunking configuration Fallback configurationTo enable fallback Network securityTo configure gatekeeper settings for H323 trunks Gatekeeper routingOutgoing calls configuration To configure routing for outgoing callsLine pools Call routingSelect the Destination Codes tab SRG Pstn access Remote Access Package for VoIP trunksTo configure remote access packages Pstn destination codes configuration To configure destination codes for the PstnMain office information External attendant supportPstn access and analog devices Pstn access considerationsAnalog devices considerations To configure the DNs for analog devices Access to system featuresPstn access and analog devices Select the Capabilities and Preferences tab Pstn access and analog devices NN40140-500 Troubleshooting IP telephone troubleshootingIP telephone troubleshooting Sheet 1 Issue / Problem Probable Cause / SolutionTroubleshooting IP telephone troubleshooting Sheet 2 IP terminal detailsIP Terminal Details Sheet 1 Call Server Details Event Id Severity Type CommentsTroubleshooting Probable causes for redirection failureIP Terminal Details Sheet 2 Troubleshooting fallback to local mode IP telephones manual redirectionTo manually redirect an IP telephone to the main office IP telephone firmware discrepanciesCannot clear alarms using an alarm set Troubleshooting NN40140-500 Telephone features in normal and local mode Normal modeLocal mode IP Phone 1110 in Local mode Telephone features in normal and local modeIP Phone 1120E in Local mode IP Phone 1140E in Local modeIntercom/Line IP Phone 2001 in Local mode IP Phone 2002 in Local modeIP Phone 2004 in Local mode IP Phone 2007 in Local modeIP Phone 2033 in Local mode ATA extension features IP 2050 Softphone in Local ModeFeature Activate Cancel Link key sequences Sheet 1Link *3 Gatekeeper Gateway H.323 IP telephones Local mode GlossaryBranch office Call routing Dialing planNormal mode QoS GlossaryMain office, main office call server Steering codesIndex 100 101 102
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