Manual

PSTN Fallback Enhancement

Command Reference

Cisco IOS Release 12.2(2)XA

Configuring the PSTN Cause Code

To configure the PSTN cause code, use the following command in global configuration mode:

Verifying PSTN Fallback Configuration

To verify the PSTN Fallback configuration, use the following commands in EXEC mode as needed:

Command Reference

This section documents modified commands. All other commands used with this feature are documented

in the Cisco IOS Release 12.2 command reference publications.

• call fallback reject-cause-code

Command Purpose

Router (config)# call fallback reject-cause-code

number

Configures the cause code that displays when congestion

thresholds are reached. The number argument represents any

cause code defined in Q.850 (ITU standard for Q.931 call

control) except the code for normal call clearing (cause code

16).

Command Purpose

Router# show call fallback cache

Displays the current ICPIF estimates for all IP addresses in

the call fallback cache.

Router# show call fallback config

Displays the current configuration.

Router# show call fallback stats

Displays the call fallback statistics.

Router# show running-config

Displays the running configuration and the configured cause

code.