SIP Info from Yealink Phones

[Roberto Neves]

Hey guys,
Im having an issue with Yealink's SIP INFO DTMF when I try to send 3CX * or #.
3CX PhoneSystem just ignores that it received this DTMF and just doesn't forward it to the trunk.
Yealink apparently maps '*' as '10' and '#' as '11' and i really don't know why 3cx ignores it.
Here's a flow example:


The correct flow would be 3CX sending an Info to the PSTN gateway as soon as it receives the info from the Yealink phone (wich is happening when i try to send [0-9] digits).
Anyone can help?
Thanks in advance.

Roberto Neves

 

[Roberto Neves]

Anyone can help, friends?

 

[Evolute IT]

Anyone can help, friends?

What model and firmware on the phone?

Also, are you using 3CX supported template for Yealink phones?

 

[YiannisH_3CX]

Also why are you using SIP INFO for DTMFs and not RFC2833?

 

[Roberto Neves]

What model and firmware on the phone?

Also, are you using 3CX supported template for Yealink phones?

Hi Frederick,
I'm using Yealink T19PE2 running 53.83.0.55 firmware and SIP-T46S running 66.83.0.55.
Supported phones running supported firmwares. I'm also using 3CX default templates.

Also why are you using SIP INFO for DTMFs and not RFC2833?

Hello YiannisH,
I have a system trunked with 3CX that was not dealing well with RFC2833, but that works fine with SIP INFO. So I figured, as 3CX supports both, maybe would be a great idea to change the whole system to Info. Unfortunately, that didn't come off.