diff options
| author | Richard Mudgett <rmudgett@digium.com> | 2013-04-03 20:20:09 +0000 |
|---|---|---|
| committer | Richard Mudgett <rmudgett@digium.com> | 2013-04-03 20:20:09 +0000 |
| commit | 79818112fdc9190e4dccf632d403d35343785bdf (patch) | |
| tree | f7d0f06ecfe95a74d2b02e615d13625f008d14b2 /configs | |
| parent | 1cafccdf877f623bee5d4eb3c32c7fe4aa605678 (diff) | |
chan_dahdi: Add inband_on_proceeding compatibility option.
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
Diffstat (limited to 'configs')
| -rw-r--r-- | configs/chan_dahdi.conf.sample | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/configs/chan_dahdi.conf.sample b/configs/chan_dahdi.conf.sample index 85ffd6d61..7d64cf383 100644 --- a/configs/chan_dahdi.conf.sample +++ b/configs/chan_dahdi.conf.sample @@ -196,6 +196,18 @@ context=public ; ;resetinterval = 3600 ; +; 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. +; Default yes in current release branches for backward compatibility. +; +;inband_on_proceeding=yes +; ; Overlap dialing mode (sending overlap digits) ; Cannot be changed on a reload. ; |