kenmirrors/asterisk
1
0
Fork 0
mirror of https://github.com/asterisk/asterisk.git synced 2025-09-03 03:20:57 +00:00
Code Issues Packages Projects Releases Wiki Activity

chan_dahdi: Add inband_on_proceeding compatibility option.

Browse Source 
The new inband_on_proceeding option causes Asterisk to assume inband audio
may be present when a PROCEEDING message is received.

Q.931 Section 5.1.2 says the network cannot assume that the CPE side has
attached to the B channel at this time without explicitly sending the
progress indicator ie informing the CPE side to attach to the B channel
for audio.  However, some non-compliant ISDN switches send a PROCEEDING
without the progress indicator ie indicating inband audio is available and
assume that the CPE device has connected the media path for listening to
ringback and other messages.

ASTERISK-17834 which causes this issue was dealing with a non-compliant
network switch.

(closes issue ASTERISK-21151)
Reported by: Gianluca Merlo
Tested by: rmudgett
........

Merged revisions 384685 from http://svn.asterisk.org/svn/asterisk/branches/1.8
........

Merged revisions 384689 from http://svn.asterisk.org/svn/asterisk/branches/11


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@384696 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Richard Mudgett
2013-04-03 20:20:09 +00:00
parent 1cafccdf87
commit 79818112fd
4 changed files with 21 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
channels/sig_pri.h
View File

@@ -470,6 +470,8 @@ struct sig_pri_span {
* appended to the initial_user_tag[].
*/
unsigned int append_msn_to_user_tag:1;
/*! TRUE if a PROCEEDING message needs to unsquelch the received audio. */
unsigned int inband_on_proceeding:1;
#if defined(HAVE_PRI_MCID)
/*! \brief TRUE if allow sending MCID request on this span. */
unsigned int mcid_send:1;