I have SPA3102 device and I have such problem -- my device does not work correct with DTMF codes.
In my IP-PBX after dialing there is menu where any caller can choose items by pressing numbers on phone. So, with firmare 5.1.10, my device sometimes transfers DTMF codes, and sometimes not. I think it is connected with duration of DTMF codes, but in many mobile phones users cannot change this duration even continuing pressing the key.
With firmware 5.1.07 there is no such problem.
Can anyone help me or tell cisco engineers about this problem in new firmware ?