DTMF not transmitting on Skype

[rkarem]

I have a problem on Skype where tones are not being received after connection with a party. This incudes anyone with a tone selectable options such as banks, dictation systems and answering machines. The initial dial up is successful but the receiving phone does not receive the tones.

I am using version 8 and Yealink T20/ T28 series phones.

Thanks.

 

[rkarem]

As no one has responded to this post I thought I would post the answer, which I found afer some searching. The yealink phone Account => Advanced Settinggs -> DTMF Type should be set to "INBAND"

 

[shuster1]

For the record.

This also happens with other Voip providers. I am using Cisco SPA303 Phones, I had to set the DTMF Tx to Inband+INFO.

JS

 

[leejor]

And not just VoIP providers/Skype, this can happen with PSTN Gateways as well. The DTMF method, has to "match up".