When I try to join a Webex, and have the system call me on my VoIP line through my SPA112, it seems that the * key is not recognized. I can use the phone to interact with other menu systems, such as my bank. But for some reason, I can't get into a Webex without dialing manually into the conference.
I use Vitelity as my SIP provider. They support G.711u, G.711a, and G.729a codecs. They prefer RFC2833 for DTMF Tx method, but I've also had success in the past with inband.
I should also mention that I've had sporadic luck getting into Webex in the past with this same configuration using the SPA112 with G.729a and Inband (though that really shouldn't work consistently because of the compression).
Just as a troubleshooting step, I tried calling the VoIP line from another phone to make sure I could hear the * key. I could hear it, even when I was using ATV (RFC2833) which I didn't think was going to be the case. However, I don't seem to be able to control the length of the tone - though I have no idea whether the length is a problem or not.
At the moment, I'm trying to generate a log from the SPA112 that would include the DTMF tones. Can anyone help me with the right settings so that I can see these in my log? Thanks.
