Screens used to administer ISDN trunk groups

Last Updated : Oct 07, 2026 |
Prolog information
Metadata
Keywords:
Screen
Field
Feature-Related System Parameters
Send Non-ISDN Trunk Group Name as Connected Name?
Display Connected Name/Number for ISDN DCS Calls?
Incoming Call Handling Treatment
All
Numbering - Public/Unknown Format
All
System Parameters Customer-Options (Optional Features)
Version
ISDN-BRI Trunks
ISDN-PRI
QSIG Optional Features
Synchronization Plan
All
Trunk Group (ISDN)
All
ISDN-BRI Trunk screen (if using ISDN-BRI interfaces) or
DS1 Trunk screen (if using ISDN-PRI interfaces)
All
All
ISDN Numbering - Private
All
Route Pattern
All
Hunt Groups
ISDN Caller Display
Signaling Group (if using ISDN-PRI interfaces)
All
Terminating Extension Group
ISDN Caller Display
Table Notes
  • System Parameters Customer-Options (Optional Features) — The ISDN-BRI Trunks or ISDN-PRI fields must be set to y. To enable these features, go to the Avaya Support website at http://support.avaya.com.
  • QSIG Optional Features fields can be enabled to allow appropriate administration for Supplementary Service Protocol.
  • Feature-Related System-Parameters — Set the Send Non-ISDN Trunk Group Name as Connected Name and Display Connected Name/Number for ISDN DCS Calls fields.
  • ISDN-BRI Trunk — This screen is required if using ISDN-BRI trunk interfaces. Assign all fields as required.
  • DS1 Trunk — This screen is required if using ISDN-PRI interfaces.
    • DS1 (T1) Trunk
      Assign all fields as required. For Facility Associated Signaling, up to 23 ports are available for administration as trunk members in an associated ISDN-PRI trunk group. The 24th port is used as a signaling channel. For Non-Facility Associated Signaling, all 24 ports can be used on certain DS1 trunks. The D-channel signaling function for these trunks must be provided by a designated DS1 trunk on its 24th channel.
    • E1 Trunk
      Assign all fields as required. For Facility Associated Signaling, up to 30 ports are available for administration as trunk members in an associated ISDN-PRI trunk group. Port number 16 is used as a signaling channel.
  • ISDN Trunk Group — Enter information in all the fields except the trunk group members. When using ISDN-PRI interfaces, enter the members after you establish the signaling links.
  • Signaling Group — This screen is required if ISDN-PRI interfaces are used. Complete all fields. This screen identifies groups of ISDN-PRI DS1 interface B-channels for which a given D-channel (or D-channel pair) will carry the associated signaling information (supports the Facility and Non-Facility Associated Signaling feature). Each DS1 board that is required to have a D-channel must be in a different signaling group by itself (unless D-channel backup is needed, in which case a second DS1 is administered as a backup D-channel). You are not required to select a channel for a trunk group, but if you do, you must have already defined the trunk group as type ISDN.
  • ISDN Numbering - Public/Unknown — Complete all fields. This screen supports the ISDN Call Identification Display.
  • ISDN Numbering - Private — Complete all fields. This screen supports the ISDN Call Identification Display.
  • Routing Pattern — Complete all fields including the Supplemental ISDN Routing Information fields as required.
  • Hunt Group — Complete the ISDN Caller Display field by entering either grp-name or mbr-name to specify whether the hunt group name or member name, respectively, is sent to the originating user (supports the ISDN Call Identification Display feature).
  • Terminating Extension Group — Complete the ISDN Caller Display field by entering either grp-name or mbr-name to specify whether the group name or member name, respectively, is sent to the originating user (supports the ISDN Call Identification Display feature).
  • Synchronization Plan — Assigns primary and secondary external synchronization sources for the ISDN-BRI Trunk or DS1 Trunk. Complete all screen fields as required.
Note:
ISDN-BRI and ISDN-PRI interfaces cannot be mixed in the same trunk group. Therefore, consider the following:
  • The earliest trunk member (the lowest numbered one) administered is considered correct.
  • If an offending member is subsequently found (meaning the first member was BRI and a later member was PRI, or vice versa), the cursor positions on the offending member, and the system displays the following error message: You cannot mix BRI and PRI ports in the same trunk group.
Related links
ISDN trunk groups Administration