Cisco Cisco IOS Software Release 12.2(2)XA

To configure the critical timeout value, T(critical), for the interdigit timer used in digit map matching, 
use the timeout tcrit MGCP profile command. To set the value to the default, use the no form of this 
command.

timeout tcrit tcrit-value

no timeout tcrit tcrit-value

4 seconds

MGCP profile

The interdigit timer is used when matching a digit map, which is a representation of the number and 
type of digits that a gateway can expect to collect in a buffer, based on the network dial plan. The 
interdigit timer is started when the first digit is entered, and is restarted after each new digit is entered, 
until a digit map match or mismatch occurs. 

The interdigit timer takes on one of two values, T(partial) or T(critical). When at least one more digit 
is required to make a match to any of the patterns in the digit map, the value of T(partial) is used for the 
timer. If a timer is all that is required to produce a match according to the digit map, T(critical) is used for 
the timer. 

When the interdigit timer is used without a digit map, it takes on the value T(critical). It is started 
immediately and simply cancelled (but not restarted) as soon as a digit is entered.

The following example shows how to set the T(critical) value to 15 seconds:

Router(config)# mgcp profile nyc-ca

Router(config-mgcp-profile)# timeout tcrit 15

Specifies the critical timeout value, in seconds. Range is from 1 to 600.

12.2(2)XA

This command was introduced.

Starts and allocates resources for the MGCP daemon.