Cisco AS5350XM

Continuing Configuration Using the Command-Line Interface
Configuring ISDN NFAS on Channelized T1 PRI Groups
4
Cisco AS5350XM and Cisco AS5400XM Universal Gateways Software Configuration Guide
AS5350# show running-config
Building configuration...
Current configuration:
!
! Last configuration change at 15:49:30 UTC Mon Apr 3 2000 by admin
! NVRAM config last updated at 01:35:05 UTC Fri Mar 17 2000 by admin
!
version 12.0
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
service password-encryption
!
---text omitted---
!
controller t1 1/0
channel-group 0 timeslot 1-6
channel-group 1 timeslot 7
channel-group 2 timeslot 8
channel-group 3 timeslot 9-11
pri-group timeslot 12-24
Configuring ISDN NFAS on Channelized T1 PRI Groups
ISDN Non-Facility Associated Signaling (NFAS) allows a single D channel to control multiple PRI
interfaces. A backup D channel can also be configured for use when the primary NFAS D channel fails.
When configuring NFAS for T1 controllers configured for ISDN, you use an extended version of the
ISDN pri-group command to specify the following:
• Range of PRI time slots to be under the control of the D channel (time slot 24)
• Function to be performed by time slot 24 (primary D channel, backup, or none); the last specifies
its use as a B channel
• Group identifier number for the interface under control of this D channel
Note Your Cisco AS5350XM or Cisco AS5400XM universal gateway must connect to a Primary-4ESS,
Primary-DMS 100, or Primary-NI switch (see Table 5 on page 15) and must also have a channelized T1
controller and, as a result, be ISDN PRI capable.