Administering the Trunk Group and Signaling Group for FAS and NFAS

Last Updated : Jan 30, 2024 |

Procedure

  1. Note the following details shown in the Signaling Group screen (the figure, the figure, and the figure):

    • Signaling Group 1 B-channels on DS1 boards B0 and B1 are signaled by D-channel pair B1524 (see the Primary D-Channel field) and B1624 (see the Secondary D-Channel field).

    • Signaling Group 2 B-channels on board B1 are signaled by D-channel B1824.

    • Board B0 has no D-channel. The B-channels on board B0 can be signaled by either D-channel pair B1524/B1624 (Signaling Group 1) or D-channel B1824 (Signaling Group 2).

    • The DS1 interface on board B19 (Signaling Group 3) is a Facility Associated Signaling situation. Note that the system does not display the Secondary D-channel and Trunk Board/Interface ID fields when the Associated Signaling field is set to y.

      Figure : 1. Signaling Group screen (Group 1) - D-channel backup, three DS1 interfaces


      Signaling Group Screen


      Figure : 2. Signaling Group screen (Group 2) - no D-channel backup, two DS1 interfaces
      Figure : 3. Signaling Group screen (Group 3) - FAS
  2. In the Sig Grp column on the Signaling Group Screen perform the following actions:

    • If the system displays a DS1 interface in only one Signaling Group, leave the Sig Grp field blank. The system automatically populates the field with the correct Signaling Group.

    • If the system displays a DS1 media module in more than one Signaling Group, type the Signaling Group numbers in the appropriate fields.

  3. Press Enter to save your changes.