Cisco AS5400XM Quick Start Manual page 50

Figure 41 Relationship of ISDN PRI Components for T1
Channel
type
B (data channel)
B (data channel)
B (data channel)
B (data channel)
•
•
•
•
•
B (data channel)
B (data channel)
B (data channel)
D (signaling channel)
Note When you configure your CT1 controller for a Non-Facility Associated Signaling (NFAS) backup D channel, a serial
interface is automatically created only when your primary D channel fails.
To configure ISDN signaling, follow these steps:
Enter the enable command and password to go to privileged EXEC mode. You are in privileged EXEC mode when the
Step 1
prompt changes to
Gateway> enable
Password: password
Gateway#
Enter global configuration mode. You are in global configuration mode when the prompt changes to
Step 2
Gateway# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Gateway(config)#
Enter serial interface configuration mode. After the CT1 controller is configured, a corresponding D-channel serial
Step 3
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 signaling and send outgoing signaling.
On a CE1 PRI line, the serial interface for the D channel is 1/0:15.
Note
Gateway(config)# interface serial 1/0:23
Gateway(config-if)#
Step 4 Assign an IP address and subnet mask to the interface:
Gateway(config-if)# ip address 172.16.254.254 255.255.255.0
Step 5 Configure all incoming voice calls.
Note This command has two possible keywords: data and modem. You must use the modem keyword to enable both
modem and voice calls. The modem keyword represents bearer capabilities of speech.
Gateway(config-if)# isdn incoming-voice modem
50
Virtual
serial
Time slot interface
number number
1 S0:0
2 S0:1
3 S0:2
4 S0:3
• •
• •
• •
• •
• •
21 S0:20
22 S0:21
23 S0:22
24 S0:23
.
Gateway#
Logical
contents
of a PRI
interface
Gateway(config)#.