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adding a couple of notes and eventually disable jitterbuffer 

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@9461 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Massimo Cetra 2008-09-05 12:22:19 +00:00
parent 39f9f22f82
commit 223ff87545
1 changed files with 18 additions and 6 deletions
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24
src/mod/applications/mod_fax/mod_fax.c
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@ -297,7 +297,6 @@ static switch_status_t spanfax_init( pvt_t *pvt, transport_mode_t trans_mode )
T30_SUPPORT_STANDARD_RESOLUTION | T30_SUPPORT_FINE_RESOLUTION | T30_SUPPORT_SUPERFINE_RESOLUTION
| T30_SUPPORT_R8_RESOLUTION | T30_SUPPORT_R16_RESOLUTION);
//TODO Disable V17
if ( pvt->disable_v17 )
{
@ -545,9 +544,9 @@ void process_fax(switch_core_session_t *session, const char *data, application_m
}
/*
Initialize the SpanDSP elements
*** Initialize the SpanDSP elements ***
NOTE, we could analyze if a fax was already detected in previous stages
Note: we could analyze if a fax was already detected in previous stages
and if so, when T.38 will be supported, send a reinvite in T38_MODE,
bypassing AUDIO_MODE.
*/
@ -558,11 +557,17 @@ void process_fax(switch_core_session_t *session, const char *data, application_m
return;
}
/* Answer the call */
switch_channel_answer(channel);
/* Note: Disable echocan on the channel, it there is an API call to do that */
/*
Note: We should eventually disable JB before answering. JB is bad for faxing
switch_channel_set_variable(channel, "jitterbuffer_msec", "0" );
*/
/* Finally answer the call */
switch_channel_answer(channel);
/* We store the original channel codec before switching both
* legs of the calls to a linear 16 bit codec that is the one
@ -644,6 +649,13 @@ void process_fax(switch_core_session_t *session, const char *data, application_m
goto done;
}
/* Note: more analysys on this. RTP timing maybe inaccurate and, if so,
shoule be improved.
agx proposes to add a channel variable to disable this check and don't skip CNG frames
to improve the compatibility with the problems that another (??)famous pbx that
has always had serious problems with timers (or lack of).
*/
/* Skip CNG frames (autogenerated by FreeSWITCH, usually) */
if (switch_test_flag(read_frame, SFF_CNG)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Skipping CNG frame\n" );