Just for integration, look here
http://lists.digium.com/pipermail/asterisk-users/2003-July/016464.html
basically sip info dtmf are:
Event encoding (decimal)
_________________________
0--9 0--9
* 10
# 11
A--D 12--15
Flash 16
matteo
Il dom, 2003-10-12 alle 09:38, Nguyen Hoang Lan ha scritto:
> Hello guys,
> I have searched high and low, but not found any information about
> rules of using DTMF in SIP INFO method. Cisco has described something with
> Signal=, but it look like this feature is dependent on implementors?
>
> The problem is chan_sip.c cannot correctly translate received DTMF
> digits, especially #,*. At least with my Antek EGW-804 gateway.
>
> Looking into chan_sip.c, I found this code:
>
> line 3982
> if (p->owner) {
> if (strlen(buf)) {
> if (sipdebug)
> ast_verbose("DTMF received: '%c'\n", buf[0]);
> event = atoi(buf); << WHY?
> if (event < 10) {
> resp = '0' + event;
> } else if (event < 11) {
> resp = '*';
> } else if (event < 12) {
> resp = '#';
> } else if (event < 16) {
> resp = 'A' + (event - 12);
> }
> memset(&f, 0, sizeof(f));
> f.frametype = AST_FRAME_DTMF;
> f.subclass = resp;
> f.offset = 0;
> f.data = NULL;
> f.datalen = 0;
> ast_queue_frame(p->owner, &f, 0);
> }
>
> On line 3986, any # or * digit I entered was translated to 0(zero). So
> any apps depends on # for terminating (voicemail for example) won't
> work.
>
> My question is , why not take just buf[0]? why translate? my UA
> always send something like d= (one digit) at a time.
--
Brancaleoni Matteo <[EMAIL PROTECTED]>
Espia - Emmegi Srl
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