If you use Playtones you should put an Answer and a Wait(1) before the Playtones

I recommend using the Hangup app instead.   Busy would be Hangup(17).


From: asterisk-users-boun...@lists.digium.com 
[mailto:asterisk-users-boun...@lists.digium.com] On Behalf Of Justin Killen
Sent: Wednesday, July 09, 2014 2:24 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: [asterisk-users] PRI congestion instead of busy

I have two servers, each connected to the PTSN via PRI.  When I call from site 
A (951-999-9999) to site B (555-1212) and the phone at site B is on the phone, 
I hear the normal ring tone for about 20 seconds, then the message "all 
circuits are busy now.  please try your call again latter" followed by the 
congestion tone.  Instead, I want this to busy ring and then hang up without 
any message.

Here is a snippet from site A:

...
[2014-07-09 09:56:16] VERBOSE[21606][C-0000dab7] app_dial.c:     -- Called 
DAHDI/g5/5551212
[2014-07-09 09:56:17] VERBOSE[21606][C-0000dab7] app_dial.c:     -- 
DAHDI/i7/5551212-411b is proceeding passing it to SIP/260-0000a2f1
[2014-07-09 09:56:17] VERBOSE[21606][C-0000dab7] app_dial.c:     -- 
DAHDI/i7/5551212-411b is ringing
[2014-07-09 09:56:17] VERBOSE[21606][C-0000dab7] app_dial.c:     -- 
DAHDI/i7/5551212-411b is making progress passing it to SIP/260-0000a2f1
[2014-07-09 09:56:18] VERBOSE[21606][C-0000dab7] app_dial.c:     -- 
SIP/260-0000a2f1 requested media update control 26, passing it to 
DAHDI/i7/5551212-411b
[2014-07-09 09:56:37] VERBOSE[2286][C-0000dab7] sig_pri.c:     -- Span 7: 
Channel 0/3 got hangup request, cause 16
...

And from site B:

...
[2014-07-09 09:56:17] VERBOSE[3775][C-00000bb1] pbx.c:     -- Executing 
[s@macro-exten-vm:22] GotoIf("DAHDI/i8/9519999999-59f", "1?s-BUSY,1") in new 
stack
[2014-07-09 09:56:17] VERBOSE[3775][C-00000bb1] pbx.c:     -- Goto 
(macro-exten-vm,s-BUSY,1)
[2014-07-09 09:56:17] VERBOSE[3775][C-00000bb1] pbx.c:     -- Executing 
[s-BUSY@macro-exten-vm:1] GotoIf("DAHDI/i8/9519999999-59f", "0?exit,1") in new 
stack
[2014-07-09 09:56:17] VERBOSE[3775][C-00000bb1] pbx.c:     -- Executing 
[s-BUSY@macro-exten-vm:2] PlayTones("DAHDI/i8/9519999999-59f", "busy") in new 
stack
[2014-07-09 09:56:17] VERBOSE[3775][C-00000bb1] pbx.c:     -- Executing 
[s-BUSY@macro-exten-vm:3] Busy("DAHDI/i8/9519999999-59f", "20") in new stack
[2014-07-09 09:56:37] VERBOSE[3775][C-00000bb1] app_macro.c:   == Spawn 
extension (macro-exten-vm, s-BUSY, 3) exited non-zero on 
'DAHDI/i8/9519999999-59f' in macro 'exten-vm'
[2014-07-09 09:56:37] VERBOSE[3775][C-00000bb1] pbx.c:   == Spawn extension 
(from-did-direct, 803, 2) exited non-zero on 'DAHDI/i8/9519999999-59f'
[2014-07-09 09:56:37] VERBOSE[3775][C-00000bb1] pbx.c:     -- Executing 
[h@from-did-direct:1] Macro("DAHDI/i8/9519999999-59f", "hangupcall,") in new 
stack
[2014-07-09 09:56:37] VERBOSE[3775][C-00000bb1] pbx.c:     -- Executing 
[s@macro-hangupcall:1] GotoIf("DAHDI/i8/9519999999-59f", "1?theend") in new 
stack
[2014-07-09 09:56:37] VERBOSE[3775][C-00000bb1] pbx.c:     -- Goto 
(macro-hangupcall,s,3)
[2014-07-09 09:56:37] VERBOSE[3775][C-00000bb1] pbx.c:     -- Executing 
[s@macro-hangupcall:3] ExecIf("DAHDI/i8/9519999999-59f", 
"0?Set(CDR(recordingfile)=)") in new stack
[2014-07-09 09:56:37] VERBOSE[3775][C-00000bb1] pbx.c:     -- Executing 
[s@macro-hangupcall:4] Hangup("DAHDI/i8/9519999999-59f", "") in new stack
...


My hunch is that the PRI cause is never set, so site A gets the generic cause 
16 (normal call clearing) instead of 17 (user busy).  I suspect this is causing 
site A to get the "all circuits are busy now" message instead of a busy signal. 
 I thought calling Busy() would cause the PRI cause to get set when used on a 
channel that is PRI?  Should this be manually set instead?


Site B details:
Asterisk version 11.10.2
Libpri version: 1.4.12
DAHDI version: 2.9.0.1
Freepbx version: 2.11.0.37, distro version 5.211.65-14

-Justin

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