Specifications

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Catalyst 4224 Access Gateway Switch Software Configuration Guide
OL-2031-02
Chapter 5 Configuring the Voice Interfaces
MGCP Configuration
b. Specify which end of the circuit provides clocking:
Gateway(config-controller)# clock source line
Set the clock source to use internal clocking only for testing the network. Set
one end of the T1 line to internal.
c. Specify the framing type:
Gateway(config-controller)# framing esf
d. Specify the line code format:
Gateway(config-controller)# linecode b8zs
Step 2 Configure parameters for the voice interface.
a. Specify the PRI group and time slots to be mapped:
Gateway(config-controller)# pri-group timeslots 1-24 service mgcp
For multiflex trunk interfaces, you can configure only channel 0.
b. Configure each PRI group as a virtual serial interface:
Gateway(config-controller)# interface serial 1/0:23
c. Specify the T1 interface and unit number to modify:
interface Serial 1/0:23
no ip address
no logging event link-status
isdn switch-type primary-5ess
isdn incoming-voice voice
no cdp enable
Step 3 Configure the PRI port by entering the following command:
Gateway(controller-t1)# pri-group timeslots 1-24 service mgcp
Step 4 Bind Layer 3 to the Cisco CallManager for PRI Q.931:
Gateway(config-if)# isdn bind-l3 ccm-manager
This command backhauls (tunnels) ISDN Layer 3 and above to the
Cisco CallManager.
PRI/Q.931 signaling backhaul transports signals (Q.931 and higher layers) for
processing from a PRI trunk to a MGCP call agent. The PRI trunk must be
physically connected to an MGCP gateway.