IVR input / DTMF is not functional after upgrade from V14 to 15.5

[computing2]

We upgraded from V14 to V15.5, now IVR responses / DTMF are not being recognized by the system!

 

[YiannisH_3CX]

Hello @computing2

Do you have the issue for external calls or is the issue present in internal calls as well? If you call the voicemail extension can you login to your voicemail? Is the server local or hosted?
Some additional details regarding the configuration of the system and the nature of the issue, will help us to better understand and be able to assist with the issue.

 

[leejor]

What type of trunking are you using?

 

[computing2]

Hello @computing2

Do you have the issue for external calls or is the issue present in internal calls as well? If you call the voicemail extension can you login to your voicemail? Is the server local or hosted?
Some additional details regarding the configuration of the system and the nature of the issue, will help us to better understand and be able to assist with the issue.

It is a local server. The issue appears to be for external calls since I am able to call internal extension and make external calls without an issue. The SIP trunk provider is AT&T with 16 simultaneous calls. IVR is used extensively to route calls. As mentioned IVR recognizes options/DTMF on V14, but stops working with V15! What other details would you like to know?

 

[computing2]

What type of trunking are you using?

AT&T is the SIP trunk provider.

 

[leejor]

Might be a Codec issue. Is there an at&t box at your site (do you use a gateway to connect), or is it direct SIP into the PBX?

May, or may not be related...

https://www.3cx.com/community/threads/3cx-dtmf-issue-during-ivr.46045/