DTMF wont connect calls on Mobile Ext.

[tdmulor]

Hi. I have a problem with a MEX solution. when a call is answered on the twinned device and would like to connect with a another ext with the **6 this wont work. the dtmf tones can be hered on the other part but no thing happens on the mobile phone. Any one with any idées for a solution?

Versions:
Mitel 3300 ICP Version 8.0.5.12
Mitel Standard Linux Version 8.2
Mobile Extention version 1.5.220.0


Regards Ulf

 

[Mitelmatt]

I've found you have to type them fairly quick

 

[TheMitelGuy]

Can you please state what the trunks are (PRI, SIP etc.)?

Is this all the time, or just some times?

 

[tdmulor]

Hi.

It is like this.

when the twinned device is a mobilephone, the dtmf wont work. but I tested to twin it with a internal extention and then it works. so my problem is when the call to the twinned device goes out from the pbx.

I do think this has something to do with the trunk. this is one of the first MITEL PBX i my country that uses SIP as trunks.