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Cisco Catalyst 4000 Access Gateway Module Installation and Configuration Note
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Chapter 5 Configuring the Voice Interfaces
ISDN BRI Configuration (H.323)
The first and last parts of the configuration are the same as for the FXO example. However, you must
configure your DS-0 groups for FXS by changing the emulation type and enabling direct inward dialing
(DID). Then enter the destination patterns required for routing voice calls to and from the PSTN. The
commands required to make these changes are shown below:
gateway(config-controller)#dso-group 0 timeslots 1 type fxo-loop-start
gateway(config)# dial-peer voice 1 pots
gateway(config-dial-peer)# direct-inward-dial
gateway(config-dial-peer)# port 1/0:0
gateway(config-dial-peer)# destination-pattern 9.......
E&M Emulation Example
To connect the T1-CAS port to a trunk (tie) line using E&M emulation, you can enable one of the
following modes:
• E&M immediate start
• E&M wink start
• E&M delay dial
The first and last parts of the configuration are the same as for the FXO example. However, you must
configure your DS-0 groups for E&M by changing the emulation type. Then enter the destination
patterns required for routing voice calls to and from the PBX to which the gateway is connected. The
commands required to make these changes are shown below (all the extensions on the PBX begin with
the prefix 625):
gateway(config-controller)# dso-group 0 timeslots 1 type e&m-immediate-start
gateway(config)# dial-peer voice 1 pots
gateway(config-dial-peer)# port 1/0:0
gateway(config-dial-peer)# destination-pattern 625....
ISDN BRI Configuration (H.323)
To configure an ISDN BRI interface, perform the following steps. After completing these steps,
configure the route pattern and dial plan and save your configuration, as described in “H.323 Gateway
Configuration” section on page 5-12.
Step 1 Enter an ISDN switch type by entering the following command in global configuration mode:
gateway(config)# isdn switch-type <switch-type>
See Table 5-3 for a list of ISDN switch types.
Note Switch types configured in interface configuration mode override this setting for the
configured interface.
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