Adding a delay of 3 or 4 seconds to 911 route pattern using an MGCP gateway

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Jan 15th, 2010
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I am having several users calling 911 in the past few days...we have 2 patterns 911 and 9911, of course we have been getting several calls from 911 about hang ups! my thought is to somehow add a delay of 3 to 4 seconds before routing the call to the pstn, I have a ucm 7.1.3, cluster with an mgcp gateway to the pstn. Any help will be greatly appreciated thanks!

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Jaime Valencia Fri, 01/15/2010 - 10:38
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You would need to move the inter digit timeout to that time and create a pattern that overlaps with 911.

Changing the IDT affects ALL calls



If this helps, please rate

cesar.fiestas Fri, 01/15/2010 - 11:06
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What I end up doing was create a translation 911 to a cti route point to a unity call handler with a recording ....connecting to 911 please wait...then passing the call to 911 to the vg...(the recording its about 3 to 4 secs long) enought for the user to realized that he / she is about to make a 911 call and hopefully hang up....Thanks guys for your help!

Cesar Fiestas

Tommer Catlin Fri, 01/15/2010 - 14:40
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Be careful with that. If Unity fails, then the call is going to fail and you have no 911 pattern.

Make sure you have a call foward rull for 911 to another pattern to translate to 911 and go outbound to PSTN.  (similar to how we setup CER)

You can also create a route pattern "911X"   Then adjust your interdigit timeout to say 5 seconds.   CallManager will wait for 5 seconds for the "X" digit.  No digit, it will send 911 to the PSTN.


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