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Remove automatic switching from T.38 to voice mode in chan_sip.

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chan_sip has some code to automatically switch from T.38 mode to voice mode when
a voice frame is written to the channel while it is in T.38 mode; this was
intended to handle the situation when a FAX transmission has ended and the channel
is not yet hung up, but is causing problems at the beginning of FAX sessions as
well when there are still voice frames 'in flight' at the time the T.38 negotiation
completes. This patch removes the automatic switchover.
  
(issue #16025)
Reported by: jamicque



git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@223692 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Kevin P. Fleming
2009-10-12 15:30:40 +00:00
parent 6429db49ba
commit 0a226d933f
1 changed files with 1 additions and 2 deletions
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3
channels/chan_sip.c
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@@ -3910,8 +3910,7 @@ static int sip_write(struct ast_channel *ast, struct ast_frame *frame)
ast_set_flag(&p->flags[0], SIP_PROGRESS_SENT);
}
} else if (p->t38.state == T38_ENABLED && !p->t38.direct) {
p->t38.state = T38_DISABLED;
transmit_reinvite_with_sdp(p);
/* drop frame, can't sent VOICE frames while in T.38 mode */
} else {
p->lastrtptx = time(NULL);
res = ast_rtp_write(p->rtp, frame);