3-24
Cisco AS5350 and Cisco AS5400 Universal Gateway Software Configuration Guide
OL-3418-02 B0
Chapter3 Basic Configuration Using the Command-Line Interface
Configuring the D Channels for ISDN Signaling
Figure 3-1 Logical Relationship of ISDN PRI Components for T1
Note When you configure your CT1 controller for an NFAS backup D channel, a serial interface is
automatically created only when your primary D channel fails. See the “Configuring the D Channels for
ISDN Signaling” section on page 3-23.
Configure
Command Purpose
Step 1
AS5400> enable
Password: password
AS5400#
Enters enable mode. Enters the password. You are
in enable mode when the prompt changes to
AS5350# or AS5400#.
Step 2
AS5400# configure terminal
Enter configuration commands, one per line.
End with CNTL/Z.
AS5400(config)#
Enters global configuration mode. You are in
global configuration mode when the prompt
changes to
AS5350(config)# or
AS5400(config)#.
Step 3
AS5400(config)# interface serial 1/0:23
AS5400(config-if)#
Enters serial interface configuration mode. After
configuring the CT1 controller, a corresponding D
channel serial interface is automatically created.
For example, serial interface 1/0:23 is the
D channel for CT1 controller 1. You must
configure each serial interface to receive incoming
and send outgoing signaling.
Note On a CE1 PRI line, the serial interface is
1/0:15.
Step 4
AS5400(config-if)# ip address
172.16.254.254 255.255.255.0
Assigns an IP address and subnet mask to the
interface.
B (data channel) 1 S0:0
B (data channel) 2 S0:1
B (data channel) 3 S0:2
B (data channel) 4 S0:3
•••
•••
•••
•••
•••
B (data channel) 21 S0:20
B (data channel) 22 S0:21
B (data channel) 23 S0:22
D (signaling channel) 24 S0:23
35765
Channel
type
Time slot
number
Logical
contents
of a PRI
interface
Virtual
serial
interface
number
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