Benny, Ok my request is for a function that would return the current tx or rx frequency on a given port. Just like the existing function pjsua_conf_get_signal_level(). I would be willing to build it myself and test it then submit it back to pjsip....but I got a problem. I can see where to put it. But not how to come up with the frequency data. Thanks, David Clark (optional read) Background info of why I want this function: Ok the conference bridge keeps rx_level and tx_level and relates them back with pjsua_conf_get_signal_level(); Now part of the SIP project I am working on requires for a given outbound call to know: Did you reach a busy response. Did you reach a fax machine. Was your call intercepted by the operator. Did your call reach a answering machine or voice mail. Did you reach a live person So I thought I could use pjsua_conf_get_signal_level() for this it would just return a value between 0 and 255 that was something of a mystery to me how it was computed but compare the computation results to known sample conmputation results and you might get some where. So this is the values I came up with: 0 - 5 for silence being a little generous for low level garbage noise. 60 - 70 for a ring tone. Nice for counting rings. 85 - 95 busy tone 86 - 90 fax tone 64 - 70 Operator intercept tone 1 50 - 64 Operator intercept tone 2 35 - 41 Operator intercept tone 3 So I look for values that do not conflict and I get this: 0 - 5 silence 35 - 41 operator intercept tone 3 50 - 59 operator intercept tone 2 80 - 84 answer tone 91 - 95 busy Next I look at values that conflict and this is where one of my Computer Science professors would say things get interesting: 64 - 70 Ring, Operator Intercept tone 1 60 - 63 Ring, Operator Intercept tone 2 85 Answer Tone, Busy 86 - 90 Answer Tone, Busy, Fax Tone Yes interesting is relative. I wrote an algorithm based on this but I have doubts it will ever work every well at all. Because pjsua_conf_get_signal_level() is doc'd in the header file has being based on volume level. Frequency would most likely work better because some standard for busy tone most likely gives the frequency and duration.
