New call timer

Answered Question
Jun 8th, 2012

What is the timeout for a new call? Is it the T302 timer?

Especially, when already in a call, after pushing Transfer, what timer is responsible for determining when to stop waiting for digits, before any digits are dialed.

T302 Timer: Required Field This parameter specifies an interdigit timer for sending the SETUP ACK message. The timer restarts each time Cisco CallManager receives a digit. When this timer expires, Cisco CallManager routes the dialed digits. For exact timer definitions, refer to the Q.931 specification. 


Our situation has nothing to do with ISDN and thus Q.931 however. Everything is SIP.

I have this problem too.
0 votes
Correct Answer by Rob Huffman about 1 year 10 months ago

Hi Tom,

I believe the timer you are looking for would be the

Off-hook to First Digit Timer, default is 15000 ms

Clusterwide parameters (Device-Phone)

Cheers!

Rob

"Show a little faith, there's magic in the night" - Springsteen

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Average Rating: 4.7 (4 ratings)
Chris Deren Fri, 06/08/2012 - 06:30

Yes, don't worry about the ISDN reference, that's where the T302 name comes from. But it is responsible for all inter-digit timeouts in CUCM.

HTH,

Chris

Correct Answer
Rob Huffman Fri, 06/08/2012 - 06:36

Hi Tom,

I believe the timer you are looking for would be the

Off-hook to First Digit Timer, default is 15000 ms

Clusterwide parameters (Device-Phone)

Cheers!

Rob

"Show a little faith, there's magic in the night" - Springsteen

Chris Deren Fri, 06/08/2012 - 06:42

You are correct Rob (+5) for correct answer.

T302 will only be applicable after at least 1 digit is entered.

Chris

Rob Huffman Fri, 06/08/2012 - 07:01

Hey Chris,

The reason I'll always remember this timer is that we had a user who

complained he didn't have enough time to dial the first digit of the phone

number after he picked up the handset. When we did some research and

realized that he had 15 seconds, we "RED carded" him

That's my Euro 2012 reference for today.

Cheers!

Rob

"Show a little faith, there's magic in the night" - Springsteen

Ayodeji oladipo... Fri, 06/08/2012 - 15:27

+5 For that..

Nice one Rob! He deserved to be red carded! But well if not for him, I wouldnt have know such timer exists..so I plead for pardon

I wonder how many more things one doesnt know exist in this cucm box!

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tomribbens Mon, 06/11/2012 - 01:35

On the other hand, I can understand when you're trying to do a transfer, you first push the Transfer button to have them hear MoH, and then go searching for the number you actually transfer to, it can take more than 15 seconds before you push a button.

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Posted June 8, 2012 at 6:25 AM
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