diff options
| author | Richard Mudgett <rmudgett@digium.com> | 2011-03-04 15:28:20 +0000 |
|---|---|---|
| committer | Richard Mudgett <rmudgett@digium.com> | 2011-03-04 15:28:20 +0000 |
| commit | 928ec2b9903346f6e3d274c4addace48fb8f8624 (patch) | |
| tree | f3cafb2098bf62294b6581078f8b3e29a8caba83 /funcs/func_channel.c | |
| parent | 3cda82a379fc3714ea82cb45ee10c9aae0094242 (diff) | |
Merged revisions 309445 via svnmerge from
https://origsvn.digium.com/svn/asterisk/branches/1.8
........
r309445 | rmudgett | 2011-03-04 09:22:04 -0600 (Fri, 04 Mar 2011) | 46 lines
Get real channel of a DAHDI call.
Starting with Asterisk v1.8, the DAHDI channel name format was changed for
ISDN calls to: DAHDI/i<span>/<number>[:<subaddress>]-<sequence-number>
There were several reasons that the channel name had to change.
1) Call completion requires a device state for ISDN phones. The generic
device state uses the channel name.
2) Calls do not necessarily have B channels. Calls placed on hold by an
ISDN phone do not have B channels.
3) The B channel a call initially requests may not be the B channel the
call ultimately uses. Changes to the internal implementation of the
Asterisk master channel list caused deadlock problems for chan_dahdi if it
needed to change the channel name. Chan_dahdi no longer changes the
channel name.
4) DTMF attended transfers now work with ISDN phones because the channel
name is "dialable" like the chan_sip channel names.
For various reasons, some people need to know which B channel a DAHDI call
is using.
* Added CHANNEL(dahdi_span), CHANNEL(dahdi_channel), and
CHANNEL(dahdi_type) so the dialplan can determine the B channel currently
in use by the channel. Use CHANNEL(no_media_path) to determine if the
channel even has a B channel.
* Added AMI event DAHDIChannel to associate a DAHDI channel with an
Asterisk channel so AMI applications can passively determine the B channel
currently in use. Calls with "no-media" as the DAHDIChannel do not have
an associated B channel. No-media calls are either on hold or
call-waiting.
(closes issue #17683)
Reported by: mrwho
Tested by: rmudgett
(closes issue #18603)
Reported by: arjankroon
Patches:
issue17683_18603_v1.8_v2.patch uploaded by rmudgett (license 664)
Tested by: stever28, rmudgett
........
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@309446 65c4cc65-6c06-0410-ace0-fbb531ad65f3
Diffstat (limited to 'funcs/func_channel.c')
| -rw-r--r-- | funcs/func_channel.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/funcs/func_channel.c b/funcs/func_channel.c index 4ae08efc2..dcc0190b4 100644 --- a/funcs/func_channel.c +++ b/funcs/func_channel.c @@ -224,6 +224,22 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$") </enumlist> <para><emphasis>chan_dahdi</emphasis> provides the following additional options:</para> <enumlist> + <enum name="dahdi_channel"> + <para>R/O DAHDI channel related to this channel.</para> + </enum> + <enum name="dahdi_span"> + <para>R/O DAHDI span related to this channel.</para> + </enum> + <enum name="dahdi_type"> + <para>R/O DAHDI channel type, one of:</para> + <enumlist> + <enum name="analog" /> + <enum name="mfc/r2" /> + <enum name="pri" /> + <enum name="pseudo" /> + <enum name="ss7" /> + </enumlist> + </enum> <enum name="keypad_digits"> <para>R/O PRI Keypad digits that came in with the SETUP message.</para> </enum> |