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Nortel SRG50 Configuration Manual

Nortel SRG50 Configuration Manual

Survivable remote gateway
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Survivable Remote
Gateway 50
Configuration Guide
Part No. N0060720 03
December 2007

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Summary of Contents for Nortel SRG50

  • Page 1 Survivable Remote Gateway 50 Configuration Guide Part No. N0060720 03 December 2007...
  • Page 2 Nortel Networks. Trademarks *Nortel, Nortel (Logo), the Globemark, and This is the way, This is Nortel (Design mark) are trademarks of Nortel Networks. *Microsoft, MS, MS-DOS, Windows, and Windows NT are registered trademarks of Microsoft Corporation.

  • Page 3: Table Of Contents

    CS 1000 considerations .........33 To configure the SRG50 for NBWM and ADBWM ...39 To configure Alternative Call Routing on the SRG50; with Attendant service ...40 To configure Alternative Call Routing on the SRG50; with DID trunks...41 To configure the SRG50 for Emergency Services Access ...42...
  • Page 4 Task List Glossary ........... . 107 Index .
  • Page 5 Applying SRG50 keycodes ......... . 11 Comparison of SRG50 and BCM50 features ....... . 14 Devices supported by the SRG50 .
  • Page 6 CS 1000 information for the SRG50 ........
  • Page 7 Call routing: configuring for outgoing calls ........86 Call routing: providing access to the SRG50 PSTN ......88 Remote Access Package for VoIP trunks .
  • Page 8 Contents N0060720...

  • Page 9: Getting Started

    PSTN. The SRG50 supports up to 32 survivable IP users. It is provided as a cost-effective VoIP business continuity solution for small branch offices. The SRG50 is supported on CS 1000 and CS 2000 call servers.

  • Page 10: Intended Audience

    The SRG50 is a software application that leverages the BCM50 platform. It is optimized to provide feature transparency to the main office call server and to act as a survival remote gateway in a branch office environment. An SRG50 is created by applying the SRG application update and enabling the SRG50 application.

  • Page 11: To Apply The Srg Application Update

    Have the SRG50 Release 1.0 Documentation CD and the SRG50 Application Update CD on hand. Insert the SRG50 Release 1.0 Documentation CD into the CD/DVD drive of your client PC. Copy the BCM50 First Time Installation and Configuration Guide (N0027149) to the hard drive of the PC.

  • Page 12: To Enable The Srg50 Application

    16, 24, or 32 users. To enable the SRG50 application After the SRG50 application update is installed and the BCM50 has rebooted, the first SRG50 keycode must be applied to enable the SRG50 application.

  • Page 13: To Reboot The System

    Navigate to the Reset panel (Administration > Utilities > Reset). Click the Reboot BCM50 System button. To verify that the SRG50 has been created successfully Apply the SRG50 application update and first keycode as instructed in the preceding procedures. Launch the BCM50 Element Manager.

  • Page 14: Comparison Of Srg50 And Bcm50 Features

    Chapter 1 Getting started Comparison of SRG50 and BCM50 features The following table compares SRG50 and BCM50 features. Table 1 Comparison of BCM50 and SRG50 Item MBMs Digital telephone sets FCAPS Network Configuration Manager Telset Administration CS 1000 Geographic Redundancy...

  • Page 15: Srg50 Terminology

    SRG50 and main office personnel. In the table, EM refers to a path on the SRG50 Element Manager where the term appears; the paths are provided for reference and may not represent every appearance of the term.

  • Page 16: Coordination With The Main Office Call Server

    Several of the same type of trunk configured as one group: a trunk group. Coordination with the main office call server Configuration of the SRG50 branch office requires datafill at both the SRG50 and the main office call server. Main office configuration drives SRG50 configuration, and Nortel recommends that the main office activities be concluded before undertaking SRG50 configuration.

  • Page 17: Srg50 Operating Modes

    VoIP trunks, which then terminates the call at the branch user. Calls from the branch user set to the analog telephones at the SRG50 are routed over the VoIP trunks to terminate at the analog telephone. In all these call scenarios, only signaling messages go through the VoIP trunk.

  • Page 18: Local Mode

    Local mode In the event of a WAN failure or the call server at the main office becomes unavailable, the SRG50 reverts to local mode automatically. In local mode, the IP users connected to the SRG50 are under the control of the SRG50.
  • Page 19 Initial registration, CS 1000 When the IP telephone is installed, it first registers with the SRG50, and is in local mode. When the SRG configuration at the main office and the SRG50 is complete the IP telephone is redirected to the main office, where it registers as a branch user and changes from local mode to normal mode.

  • Page 20: Srg50 Installation And Configuration Summary

    Test Local Mode Test Local Mode is a facility that allows the IP telephone to be redirected back to the SRG50 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.

  • Page 21: Process Map For Installing And Configuring An Srg50

    Process map for installing and configuring an SRG50 Figure 3 Process map for installing and configuring an SRG50 The main office is installed and running and the information to support SRG50 has been configured. You have reviewed the SRG50 and BCM50 system requirements and documentation.

  • Page 22: Acronyms Used In This Guide

    Numbering Plan ID Optivity Telephony Manager Plain Old Telephone Service Public Switched Telephone Network Quality of Service Survivable Remote Gateway (Internet Telephone) Terminal Proxy Server Uniform Dialing Plan or User Datagram Protocol Voice over Internet Protocol Virtual Private Network Identifier...

  • Page 23: Symbols Used In This Guide

    Example: If the command syntax is: you enter: ping 192.32.10.12 Indicates command names and options and text that you need to enter. Example: Use the command. dinfo Example: Enter show ip {alerts|routes} Survivable Remote Gateway 50 Configuration Guide Chapter 1 Getting started ping <ip_address>...

  • Page 24: How To Get Help

    Getting Help over the phone from a Nortel Solutions Center If you have a Nortel support contract and cannot find the information you require on the Nortel Support Web site, you can get help over the phone from a Nortel Solutions Center.

  • Page 25: Getting Help Through A Nortel Distributor Or Reseller

    Chapter 1 Getting started Getting Help through a Nortel distributor or reseller If you purchased a service contract for your Nortel product from a distributor or authorized reseller, you can contact the technical support staff for that distributor or reseller.
  • Page 26 Chapter 1 Getting started N0060720 N0060720...

  • Page 27: Task Summary

    Chapter 2 Task summary The task summary offers a high level, chronological review of the tasks required to configure the SRG50. The paths (Xxxx > Yyyy > Zzzz) direct you to the appropriate panels on the SRG50 Element Manager. Foundation configuration Foundation configuration refers to configuration that is done as part of BCM50 foundation activities.
  • Page 28 Line Type column External Reference: BCM50 Networking Configuration Guide (N0027156) g The SRG50 supports four analog loop trunks on the main unit*. Verify the line pool assignment of these trunks. In the default configuration, these trunks are assigned to line pool A. Instructions in the Survivable Remote Gateway 50 Configuration Guide assume that the default configuration has been maintained.

  • Page 29: Ip Telephone Configuration

    “Local mode indication” on page 65 “IP telephone codec and jitter settings” on page 65 “Configuring received numbers” on page 69 “Call forwarding options” on page 71 “Configuration settings for redirected phones” on page 72 Survivable Remote Gateway 50 Configuration Guide Chapter 2 Task summary...

  • Page 30: Dialing Plan Configuration

    > Local Gateway tab Internal References: “Configuring fallback” on page 83 “Call routing: providing access to the SRG50 PSTN” on page 88 External Reference: BCM50 Networking Configuration Guide (N0027156) Configure gatekeeper settings (CS 1000 only). Configuration > Resources > Telephony Resources > Modules panel > IP Trunks row >...

  • Page 31: Call Routing Configuration

    Configuration > Telephony > Dialing Plan > Routing Internal Reference: External Reference: BCM50 Networking Configuration Guide Configure access to the SRG50 PSTN (for both local and tandem calls). Configuration > Telephony > Dialing Plan > Routing Internal Reference: External Reference: BCM50 Networking Configuration Guide (N0027156) d Configure for Network Bandwidth Management and Advanced Network Bandwidth Management (CS 1000 only).

  • Page 32: Redirection And Call Forward Configuration

    “CS 1000 information for the SRG50” on page 43 “Configuring IP telephones for redirection” on page 55 “Configuring IP telephones for redirection” on page 46 “Configuring IP telephones for redirection” on page 55 “Registering the IP telephones at the SRG50: Test Local Mode” on...

  • Page 33: Cs 1000 Considerations

    Release 1.0 operates with CS 1000 running Release 4.5 and is backward compatible to Release 3.0 and Release 4.0. The SRG50 does not operate with CSE 1000 Release 1.0 and Succession 1000 2.0 systems. The SRG50 is optimized for a branch office or remote site with a requirement for 5-to-32 survivable IP users.

  • Page 34: Cross-Reference For Cs 1000 And Srg50 Terminology

    / off-net dialing CDP / UDP / GDP / TNDN TN (terminal number) TN = MOTN. That is, the TN from the main office is entered on the SRG50 in the MOTN field (refer to “Configuring IP telephones for redirection” on page 46).

  • Page 35: Normal And Local Mode Overview: Cs 1000 Details

    TPS and are controlled by the Call Server at the main office. Survivable IP users connected through the SRG50 receive the features, key layout, and tones of the main office Call Server. This provides feature and application transparency between the branch office and the main office.

  • Page 36: Survivability

    Chapter 3 CS 1000 considerations IP Phone users in Normal Mode use the feature set on the main office. IP Phone users in Local Mode, receive only those features and tones that are provisioned on the SRG. Users of analog (500/2500-type) telephones always use the feature set on the SRG.

  • Page 37: Recovery To Normal Mode

    In normal mode, the codec selection used is controlled by specific programming of the CS1000. In this case: SRG50 supports up to a maximum of 15 Virtual trunks unless both the intrazone and interzone codecs are configured as Best Quality (G.711) in which case, the maximum number of virtual trunks would be 24.

  • Page 38: Bandwidth Management

    Seamless dialing requires that the start digit of the DNs are unique for each system (coordinated dialing plan). If the start digit is the same on both systems, the local users on the SRG50 must dial a separate destination code before the main office DN.

  • Page 39: To Configure The Srg50 For Nbwm And Adbwm

    Obtain the Virtual Private Network ID and the Zone ID numbers configured at the main office. Use the SRG50 Element Manager to enter these numbers in the appropriate fields at Configuration > Telephony > Dialing Plan > Private Network > Dialing Plan - Private Network panel >...

  • Page 40: To Configure Alternative Call Routing On The Srg50; With Attendant Service

    Figure 4 Dialing Plan - Private Network panel, VoIP subpanel To configure Alternative Call Routing on the SRG50; with Attendant service Complete the procedure: To configure the SRG50 for NBWM and ADBWM the SRG50 for NBWM and ADBWM” on page Refer to “Call routing: configuring for outgoing calls”...

  • Page 41: To Configure Alternative Call Routing On The Srg50; With Did Trunks

    To configure Alternative Call Routing on the SRG50; with DID trunks Note: In order to support DID trunks, the MODN dialed by an SRG50 caller must match the DID digits. Note: In the following procedure, it is assumed that the MODN matches the XXXX portion of the DID’s NPA-NXX-XXXX;...

  • Page 42: To Configure The Srg50 For Emergency Services Access

    The Nortel Communication Server 1000 Main Office configuration for Survivable Remote Gateway 50 guide covers the logic and procedures for configuring Emergency Services Access on both the SRG50 and the CS 1000. The information here fleshes out the SRG50 procedure in that guide.

  • Page 43: Cs 1000 Information For The Srg50

    In order to redirect IP telephones and forward calls to the main office (Call Forward All Calls feature), the SRG50 requires information about the main office network environment. This information is recorded through the SRG50 Element Manager on the S1000 Main Office Settings panel.
  • Page 44 Default: Private N0060720 N0060720 Description Port on the SRG50 used to connect to the NCS. Port on the SRG50 that the SRG50 uses to monitor the status of the connection with the main office terminal proxy server (that is, to confirm connectivity with the main office) Access code for the main office VoIP trunk.

  • Page 45: To Datafill The S1000 Main Office Settings Panel

    LOC. Range: 0 to 34 To datafill the S1000 Main Office Settings panel On the SRG50 Element Manager, navigate to Configuration > Resources > Survivable Remote Gateway (Figure Select the S1000 Main Office Settings tab.

  • Page 46: Configuring Ip Telephones For Redirection

    Configuring IP telephones for redirection Once an IP telephone at the SRG50 is configured (refer to it automatically registers with the SRG50 (S1). To configure an IP telephone for redirection to the main office call server, SRG-specific datafill is required. The SRG-specific configuration includes: •...

  • Page 47: Recording Numbers And Models

    TN record that is associated with the SRG50 DN. The following table provides a record of the CS 1000 TN and BUID, the SRG50 MOTN and DN, and the model of phone, to facilitate installation and provide a permanent record of the configuration.

  • Page 48: Datafilling The S1000 Ip Terminal Details Panel

    Datafilling the S1000 IP Terminal Details panel The SRG50 Element Manager provides SRG-specific panels for recording the CS 1000 TN and BUID that are associated with a particular SRG50 DN. The following table lists and describes the fields on the S1000 IP Terminal Details panel.

  • Page 49: To Enter The Motn And Buid

    Refer to records” on page To enter the MOTN and BUID On the SRG50 Element Manager, navigate to Configuration > Resources > Survivable Remote Gateway. Select the S1000 IP Terminal Details tab Refer to the table of IP telephone numbers and models recorded in the table provided earlier in this section.
  • Page 50 Chapter 3 CS 1000 considerations Figure 6 S1000 IP Terminal Details panel N0060720 N0060720...

  • Page 51: Ip Telephone Settings

    S2 Retry Count Firmware upgrade The redirected IP telephones at the SRG50 are under the control of the main office call server for the majority of their deployment and receive all of their features in that context. Therefore, the version of IP set firmware must align with the requirements of the CS 1000.

  • Page 52: Release 4.5 Firmware Upgrade Procedure

    SRG50 for upgrading. If the required file does not exist on the SRG50, or its version is incorrect, the SRG initiates an FTP session to the TPS for that phone to retrieve the required file. The SRG50 upgrades the phone and redirects it back to the CS 1000.

  • Page 53: Cs 2000 Considerations

    “Registering the IP telephones at the SRG50: Test Local Mode” on page 61 • “Firmware upgrade” on page 61 An overview of CICM interoperability with the SRG50 is provided in the solution-level Basics document associated with your CS 2000-based solution. Note: Currently, the SRG50 is a First Customer Application for the...

  • Page 54: Restrictions And Limitations

    Refer to the Centrex IP Client Manager Etherset Installation Guide and User Manual, NN10027-113, for detailed instructions on how to install and configure IP telephones. The IP telephones that are located at the SRG50 branch office, initially register to the CICM gateway (S1) located in the main office.

  • Page 55: Configuring Ip Telephones For Redirection

    Call forwarding of calls coming into the SRG50 from the local PSTN is required (that is, the SRG50 is equipped with PSTN trunks and you want calls from the PSTN to be call forwarded automatically to the main office DN provisioned for the IP telephone at the SRG50).

  • Page 56: To Datafill The Cs2000 Main Office Settings Panel

    Range: 2 to 10 minutes To datafill the CS2000 Main Office Settings panel On the SRG50 Element Manager, navigate to Configuration > Resources > Survivable Remote Gateway. Select the CS2000 Main Office Settings tab Enter the information in the appropriate fields.

  • Page 57: Step 2: Record Numbers And Models (Call Forwarding Only)

    SRG50 are registered with the main office, and the main office provides all call handling. In order for calls coming into the SRG50 from the local PSTN to be call forwarded to the main office, the model of each IP telephone installed at the SRG50 must match the model of phone configured for the corresponding number at the main office.

  • Page 58: Step 3: Configure The Modn (Call Forwarding Only)

    Chapter 4 CS 2000 considerations Table 8 Mapping IP telephones to MODNs and SRG50 DNs (Sheet 2 of 2) MODN Step 3: Configure the MODN (call forwarding only) CS2000 IP Terminal Details panel The MODN is configured on the CS2000 IP Terminal Details panel. The following table lists and describes the fields on this panel.

  • Page 59: To Enter The Modn

    Required for call forwarding. Leave blank if call forwarding is not required. If provisioned, the SRG50 invokes a Call Forward All Calls to the MODN when the IP telephone is redirected to the main office. Call forwarding not supported in SN08, leave field blank.

  • Page 60: To Redirect The Telephone To The Cicm

    Figure 8 CS2000 IP Terminal Details panel Step 4: Redirect the telephone to the CICM To redirect the telephone to the CICM On the SRG50 Element Manager, navigate to Configuration > Resources > Survivable Remote Gateway. Select the CS2000 IP Terminal Details tab Select the DN of the telephone to be redirected (this is the DN that appears on the telephone when in local mode).

  • Page 61: Registering The Ip Telephones At The Srg50: Test Local Mode

    CICM Configuration Management document, NN10240-511. The first time that the telephone is redirected to the SRG50, the telephone remains connected to the SRG50 until it is configured at the SRG50 as a redirected set and the Redirect Set button is pressed (refer to “Configuring IP telephones for redirection”...
  • Page 62 Chapter 4 CS 2000 considerations N0060720 N0060720...

  • Page 63: Setting Up Ip Telephones

    • “911 Emergency Services Support” on page 74 Registration password If a registration password is configured on the SRG50, the IP telephone installer must enter the password before the telephone can be configured. To set the IP telephone registration password On the SRG50 Element Manager, navigate to Configuration >...
  • Page 64 Chapter 5 Setting up IP telephones There are three fields that define the password registration process: Enable registration, Enable global registration password, and Global password. Enable registration Enable global registration password Global password Figure 9 Telephony Resources panel, IP and Application Sets Select and enter the values to meet the password requirements of your installation.

  • Page 65: To Change Local Mode Indication

    When the IP telephones are operating in local mode, codec and jitter settings are set on a phone-by-phone basis. Configure the settings to meet the requirements of the local SRG50 environment. They do not have to be the same as the main office settings (in contrast to the QoS settings for the VoIP trunks;...

  • Page 66: Configuring Telephone (Dn) Records

    PSTN trunks are assigned to line pool A. Refer to on page configuration” on page 27 N0060720 N0060720 (Figure 11). The BCM50 Networking Configuration Guide and the “SRG50 terminology” on page for more information. “Creating the SRG50” 15, and “Foundation...

  • Page 67: To Configure Dn Records For Redirected Ip Telephones

    Public OLI field (Pub. OLI). Leave the Fwd All field blank to disable the Call Forward All Calls feature when the telephone is in local mode. In normal mode, the SRG50 can forward all calls to the main office call server automatically (refer to Call Forward All Calls feature is automatically discontinued and the SRG50 routes calls to the SRG50 DNs.
  • Page 68 Chapter 5 Setting up IP telephones Figure 11 All DNs panel 13 Select the Capabilities and Preferences tab. 14 Set Intercom Keys to 1 if required. 15 On the Details for DN subpanel, select the Button Programing Table tab. 16 Program the voice mail access button with the PSTN dialup for the main office voice message system.

  • Page 69: To Map Received Numbers To The Dn

    Note: If the retained digits are the same as the DN, the fields (Pub. Received # field and Priv. Received # field) can be left blank. To map received numbers to the DN On the SRG50 Element Manager, navigate to Configuration > Telephony > Lines > Target Lines (Figure 12).

  • Page 70: To Configure Dhcp Settings For Srg Operation

    On the DHCP Server is pull-down menu, select Enabled - IP Phones Only. On the WINS node type pull-down menu, select H-node. In the Default gateway field, enter an address that meets the requirements of the SRG50 LAN. In the Lease time field, enter a value that meets the requirements of your system.

  • Page 71: Call Forwarding Options

    The disadvantage of the second option is that the installer must configure the target DN in two places: on the Active Sets panel and on the SRG50-specific panels (the SRG-specific panels must be completed). The SRG50 looks at the SRG50-specific panels first.

  • Page 72: Configuration Settings For Redirected Phones

    Test Local Mode An IP telephone operating in normal mode can be forced to redirect to the SRG50. This allows the telephone user, and system administrator, to test local mode operation without taking down the VoIP trunk to the main office.

  • Page 73: Features In Local Mode

    Features in local mode In local mode, IP telephones at the SRG50 no longer have access to the full suite of main office applications. However, the SRG50 does provide a set of features that include connectivity with the local PSTN, access to Emergency Services, and the ability to call local extensions.

  • Page 74: 911 Emergency Services Support

    Background Music, Call Park, Call Pickup, Speed Dial, and Conference. Note: Conferencing and three-party calling are not supported on SRG50 1.0. This is due to resource allocation with IP Sets and IP Trunks. SRG systems based on the BCM200/400 platform do not have this limitation as the resource structure differs on that platform.

  • Page 75: Setting Up The Private Voip Network

    To provide SRG functionality and to take advantage of VoIP technology, a private VoIP network is required between the SRG50 and the main office. This chapter details the procedures for establishing appropriate WAN connections to enable a VoIP network between the main office and SRG50 branch locations.
  • Page 76 Chapter 6 Setting up the private VoIP network Generic procedures for setting up a private network on the SRG50 are covered in the BCM50 Networking Configuration Guide (N0027156). Items to address when establishing the private VoIP network between the SRG50 and the main office are: •...

  • Page 77: Basic Parameters

    Configuration Guide (N0027156). Configured as part of BCM50 foundation configuration. DN range of the SRG50 is set by the hardware configuration and keycodes. Actual numbering is contiguous from the Start DN: Administration > Utilities > Reset > Reset panel > Cold Reset Telephony Services button >...

  • Page 78: Private Dialing Plan

    SRG50 and the main office call server. The dialing plan choice also determines whether the DN on the SRG50 matches the BUID (CS 1000) or DN (CS 2000) on the main office. Dialing plans between the SRG50 and the main office call server must be compatible. Private dialing plan configuration is described in detail in the BCM50 Networking Configuration Guide (N0027156).

  • Page 79: Meridian Customer Defined Network (Mcdn)

    Meridian Customer Defined Network (MCDN) MCDN is automatically activated when the system is converted to SRG operation. To ensure that redirected IP telephones can transfer calls to the SRG50 local telephones, trunk anti-tromboning (TAT) must be enabled. Chapter 6 Setting up the private VoIP network...

  • Page 80: To Enable Mcdn Tat

    QoS settings (codec, jitter buffer, and related items) Quality of Service (QoS) settings for the VoIP trunks at the SRG50 are determined by the main office settings; the SRG50 settings must match the main office. Use the following table to record the main office settings, to facilitate configuration, and to provide a record of the datafill.

  • Page 81: To Enter The Qos Settings For Voip Trunks

    Incremental payload size (yes/no) T.38 fax (yes/no) Force G.711 for 3.1k audio (yes/no) On the SRG50 Element Manager, enter QoS settings for VoIP trunks through the Telephony Resources panel. To enter the QoS settings for VoIP trunks On the SRG50 Element Manager, navigate to Configuration > Resources > Telephony Resources.

  • Page 82: Network Security

    Figure 17 Modules panel, IP Trunks Network security Firewall configuration for SRG50 is the same as for the BCM50 and is detailed in the BCM50 Networking Configuration Guide (N0027156). Firewalls cannot be configured to allow VoIP pass through. Instead, the SRG50 supports IPsec tunnels to provide VoIP pass through. IPsec tunnels are also covered in the BCM50 Networking Configuration Guide (N0027156).

  • Page 83: To Enable Fallback

    Configuring VoIP trunking When the SRG50 is operating in normal mode, connectivity to the main office call server is over VoIP trunks. An SRG50 can support up to 24 VoIP trunks. Configuring VoIP trunks has three components: • “Configuring fallback” on page 83 •...

  • Page 84: Gatekeeper Routing (Cs 1000 Only)

    Examples: • If the system is running with a CDP dialing plan and the SRG50 DN range is from 3000 to 3199, the gatekeeper requires this information to establish that calls starting with 30 and 31 are routed to the SRG50.

  • Page 85: To Configure Gatekeeper Settings

    If the PSTN to which the SRG50 connects has a location code of 521, the gatekeeper must have a record of this code in the SRG50 list so that main office calls to the SRG50 PSTN can be routed correctly.

  • Page 86: To Configure Routing For Outgoing Calls

    Survivable Remote Gateway 50 Configuration Guide are a cryptic abbreviation of that material, and only cover procedures that are specific to SRG50 operations; that is, for calls from redirected IP telephones. Refer to the BCM50 Networking Configuration Guide (N0027156) if more detailed information is required.
  • Page 87 Depending on the dialing plan, the destination code is integrated with the DN or is dialed as a prefix to the DN. When a user calls the main office, the SRG50 examines the destination code to determine the routing. If the First Route, the VoIP trunks, is unavailable, the call is routed to the Second Route, the PSTN, and the External Number is called.

  • Page 88: To Configure Remote Access Packages

    PSTN must be configured. Remote Access Package for VoIP trunks The SRG50 views all calls coming in over the VoIP trunks as remote access calls, even though the VoIP pathway is a dedicated trunk to another closed system. To allow tandem dialing from the main office through the SRG50 PSTN, or to redirect SRG50 IP telephones to use the SRG50 local PSTN, you must specify a remote package that provides access to the PSTN line pool.

  • Page 89: Main Office Information

    Users on both SRG50 and main office telephones dial this destination code to access the local (SRG50) PSTN. If this code goes only to the SRG50 PSTN, enter 9 + Wild Card 1. This wild card allows any numbers not used by other 9-based destination codes.

  • Page 90: External Attendant Support

    VoIP trunks become unavailable: A fallback (or Prime) DN at the SRG50 can be specified. Since this DN is likely to receive calls in a WAN failure scenario, it must be an IP telephone that can transfer the calls to the desired party.

  • Page 91: Considerations For Pstn Access And Analog Devices

    Considerations for PSTN access PSTN access To provide access to the SRG50 PSTN when the SRG50 is in local mode, or to be able to set up tandem dialing from the main office through the SRG50 to the SRG50 PSTN, one or more PSTN trunks must be configured on the system.

  • Page 92: Considerations For Analog Devices

    If you leave the analog telephone records at the default settings, these telephones have greater feature access on the SRG50 than the IP telephones in local mode. If you do not want different feature access on the analog telephones, turn the unwanted settings off as you program the telephone.

  • Page 93: To Configure The Dns For Analog Devices

    PSTN or to the main office over the VoIP trunk. Chapter 7 Considerations for PSTN access and analog devices (Figure 20), select the Line Access tab. Note: The Private OLI field (Priv. OLI) defaults to the DN. Do not change this number. Survivable Remote Gateway 50 Configuration Guide...
  • Page 94 Chapter 7 Considerations for PSTN access and analog devices If you want the analog telephones to emulate local mode call functionality always, assign only the PSTN line pool to the analog devices. On the Active Sets panel (Configuration > Telephony > Sets > Active Sets select the Capabilities and Preferences tab.

  • Page 95: Troubleshooting

    IP connectivity to the SRG50 (cables, switches, and so on). If the connection between the IP client and the SRG50 is slow (ISDN, dialup modem), change the preferred codec for the telephone from G.711 to G.729.

  • Page 96: Ip Terminal Details

    IP terminal details The following table summarizes the events that can be raised by the SRG50. The events and details appear in the SRG50 Element Manager at Telephony > Sets > Active Sets > IP Terminal Details. Periodic retries may result in the same condition being detected over and over again. In these cases the SRG50 state machine uses flags to indicate that a given event has been logged.
  • Page 97 MO TPS has stopped. Major S1000 Indicates firmware required by the main office is not available in the SRG50. Critical Indicates that a critical error caused the SRG50 process to terminate. Survivable Remote Gateway 50 Configuration Guide...

  • Page 98: Probable Causes For Redirection Failure

    The user id entry in the gatekeeper database points back to the originating node. For the CS 2000, there are fewer main office parameters to configure on the SRG50. As a result, there are fewer places where configuration may be an issue, but this also means that the difference between a WAN problem versus an address configuration problem is not as evident.

  • Page 99: To Manually Redirect An Ip Telephone To The Main Office

    Manually redirecting IP telephones To manually redirect an IP telephone to the main office Access the Telephony > Sets > Active Sets > IP Terminal Details in the SRG50 Element Manager interface. Click on the telephone listing that you want to redirect to normal mode.
  • Page 100 Chapter 8 Troubleshooting N0060720...

  • Page 101: Telephone Features In Normal And Local Mode

    In normal mode, IP telephones have the feature set that is supported by the main office. User cards are not supplied with the SRG50 because the feature set depends on the main office applications. If required, obtain user cards from the main office for normal mode features.

  • Page 102: 2050 Software Phone In Local Mode

    Telephone features in normal and local mode 2050 Software Phone in Local Mode* Exit/Quit key: only active if MO set to Test in local mode Autodials voice mail through PSTN Note: MVC2050 and MVC2050E Softphones are supported on CS 1000 only. N0060720 Programmable label Not active...

  • Page 103: 2004 In Local Mode

    Test in local mode Telephone features in normal and local mode Transfer Lastnum Aug 6 9:43 am Local Mode Autodials voice mail through PSTN Survivable Remote Gateway 50 Configuration Guide Not active Intercom/Line Programmable label Activate Test in Local mode...

  • Page 104: 2002 In Local Mode

    Telephone features in normal and local mode 2002 in Local mode ATA extension features Analog telephones can be connected to the system through analog station modules or by installing an Analog Terminal Adapter (ATA) between the telephone and a digital station module. These telephones have only basic button configurations, so instead of using the feature key, press the link key (*) to invoke features on the system.
  • Page 105 (0 to 6) Page - External LINK *62 Page - All LINK *63 and zone (0 to 6) Telephone features in normal and local mode Cancel Feature Leave a message Survivable Remote Gateway 50 Configuration Guide Activate Cancel LINK *980...
  • Page 106 Telephone features in normal and local mode N0060720...

  • Page 107: Glossary

    A dialing plan option that is supported on the main office only. The SRG50 supports CDP or UDP only. If the main office is running BDP, the SRG50 zone must be configured to allow either CDP or UDP, not both.
  • Page 108 Internet. Zone Digit Prefix The main office appends this number to an SRG50 local-PSTN call dialed from an SRG50 IP telephone. The number differentiates the call from a main office local-PSTN call dialed by a main office telephone.

  • Page 109: Index

    SRG50 configuration 75 capabilities, IP telephony 67 Caution symbol 23 type of number 45 Conventions and symbols 23 converting system to SRG50 89 creating the SRG50 10 Danger symbol 23 dialing plan private 78 emergency services access 42...
  • Page 110 Index overview 18 testing 72 troubleshooting 98 main office redirecting SRG50 IP telephones 99 MCDN network settings 79 MO Access Code Length 45 MO TPS 48, 58 Modes of operation 17 MOTN 48, 58 network bandwidth management 38 networking private dialing plan 78...
  • Page 111 45 vacant number routing 37 virtual trunk capacity 37 VoIP trunk access code 44, 56 VoIP trunks line configuration 86 MCDN network setting 79 remote package 88 SRG50 configuration 75 Warning symbol 23 Survivable Remote Gateway 50 Configuration Guide Index...

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