Administering signaling-group parameters

Last Updated : Jul 17, 2020 |

Procedure

  1. Enter sig-group <sgnum>, where <sgnum> is any number from 1 to 650.

    The command line prompt changes to sls-sig-group <sgnum>. If you want to remove the signaling group from the SLS administration, enter exit to leave the second-level sig-group context and return to the (super-sls)# context, and then enter clear sig-group sgnum.

  2. Enter set trunk-group-chan-select <tgnum> to specify the trunk-group number that accepts incoming calls where the Information Channel Selection field does not specify a preferred channel for bearer transport.

    This is useful if the signaling group controls more than one trunk group (in cases where you wish to manage a DS1 facility with more than one trunk group).

  3. Enter set primary-dchannel <circuit-number>, where <circuit-number> is an identifier for a Branch Gateway, slot, or T1/E1 circuit, to select the primary D-channel number.

    For the value of <circuit-number>, you can use a 3-digit Branch Gateway identifier (for example, 005), a 2-character slot identifier (for example, v2), or a 2-digit circuit number (24 for T1-ISDN, 16 for E1-ISDN).

  4. If your trunk is provisioned without a D-channel for signaling, enter set associated-signaling no to use Non-Facility Associated Signaling (NFAS).
    Note:

    • NFAS is primarily a feature for ISDN-T1 connections offered by service providers in North America and Hong Kong. However, it can also be used on private-network connections, and in that context it is possible to set up NFAS using ISDN-E1 interfaces. If you are using NFAS, enter add nfas-interface gateway module interface-id, where gateway is the 3-digit Branch Gateway identifier, module is the 2-character slot identifier, and interface-id is the DS1 circuit number associated with the NFAS group. The value of interface-id is received from the network service provider.

    • The North American Public Network Service Providers do not allow any part of a T1 to be shared outside of this NFAS-trunk group. In other words, they do not allow one of the T1 interfaces (of this NFAS group) to be fractionalized into two or more uses. It must be dedicated to this given customer. Therefore, the following usage rules apply:

    • All members of an NFAS DS1 (that are administered) must belong to the same trunk-group

    • All members of this trunk-group must belong to a single signaling group

  5. Enter show to check the signaling groups administration.

    The report lists the signaling groups parameters. For example:

    Sig-group Tg-Select Assoc-Sig Prime-Dchan Nfas-Modules/Nfas-Id
--------- --------- --------- ----------- -------------------------------------
       10        98       yes     005v424                                     -
  6. Enter exit to leave the sig-group context in SLS.