I have an issue here with our CCM 4.1.2 environment. When dialing from an 7940 phone to another (7940 or other model) phone it takes about 5 seconds before the other phone rings. Meanwhile nothing happens, the only thing that shows up in the display is "Choos destination". After this message shows up the number is dailed and the dialed extension rings.
There about 300 devices connected to our ccm. Any ideas whats wrong? Thanks!
Cisco CallManager contains a service parameter that enables you to change the interdigit timeout value. You can easily configure this parameter. The default timeout is set to 10 seconds. If you do not modify the settings, the system waits 10 seconds after each digit for a new one to be introduced. Consequently, after the last digit has been inserted, the CallManager routes the call after 10 seconds. You can observe this especially on variable-length dialplan configurations.
From this tech note;
Delay in Call Establishment: Configuring the Interdigit Timeout
what Rob means by that is that you probably have overlapping dial plans. If your extensions start with 23XX and you, for example, have a route pattern that starts with 2XXXXX, the system will wait for the interdigit timeout to expire before it places a call.Go to Route Plan and do a search for DNs that start with the number with which your extensions start. If you get something other than just your 4- or 5-digit extensions (whatever you have) then you might be hitting that issue with overlapping dial plans.
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