Iqbal,
SIP is supposed to be extensible. So long as the end point understand the method, it is allowed. A proxy should relay method it does not understand. The INFO method is defined in RFC and so it's allowed.
Seems like you are trying to extend SER beyond a proxy server. As long as you have the right module, the thing you are asking is doable. However, I strongly against this. How would you feel if the DTMF was supposed to be received by the bank application and somehow SER intercept it and use it for call routing?
Zeus
Iqbal wrote:
is this a "allowed" method if so has anyone used it to do clever things with dtmf digit handling, things like executing a script to amend call forwarding rules etc.