OK everyone,
I have been banging my head against a wall for 2 days trying to figure
out why I can't get ringback on my SIP to SIP calls through Asterisk.
Eventually, I tracked it down. The call to ast_early_bridge actually
completes without error, but the problem appears in chan_sip, in
sip_set_rtp_peer() at or about line 17204 in the 1.4.11 version of Asterisk:
if (chan->_state != AST_STATE_UP && !global_directrtpsetup) /* We
are in early state */
return 0;
Apparently, any attempt at early media over SIP is thwarted in the
chan_sip module. After commenting out this line, my calls bridge fine
and I hear the ringback and other progress messages. I have not yet
noticed any ill effects from doing this.
My question is: what was the purpose of this statement? Is there
another/better way to get early media on SIP to SIP calls?
Thanks in advance,
Chris
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