asterisk users - Sep 2004 - busy signalling on PRI doesn't work...

hi all

Attachd is a PRI DEBUG dumped while dialling out to a busy number among 
with zap(ata|tel).conf. asterisk did not flag busy, and I got a busy 
indicator going meeeeep-meep-meeeeep-meep-meeeeep-meep (never heard 
this before)

Can someone help me out here?

thanks

roy

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[root@pstngw1 root]# asterisk -r
Asterisk CVS-HEAD-07/28/04-14:58:30, Copyright (C) 1999-2004 Digium.
Written by Mark Spencer <markster@digium.com>
========================================================================Connected
to Asterisk CVS-HEAD-07/28/04-14:58:30 currently running on pstngw1 (pid = 1995)
pstngw1*CLI> pri debug span 1
Enabled debugging on span 1
    -- Accepting AUTHENTICATED call from 213.160.242.5, requested format = 8,
actual format = 8
    -- Executing NoOp("IAX2/sipgw1@sipgw1/2", "TON: 0") in
new stack
    -- Executing NoOp("IAX2/sipgw1@sipgw1/2", "NPI: 0") in
new stack
    -- Executing NoOp("IAX2/sipgw1@sipgw1/2", "PRES: 0") in
new stack
    -- Executing Dial("IAX2/sipgw1@sipgw1/2",
"Zap/g1/22602614|180|t)") in new stack
-- Making new call for cr 32830
> Protocol Discriminator: Q.931 (8)  len=39
> Call Ref: len= 2 (reference 62/0x3E) (Originator)
> Message type: SETUP (5)
> [04 03 80 90 a3]
> Bearer Capability (len= 5) [ Ext: 1  Q.931 Std: 0  Info transfer
capability: Speech (0)
>                              Ext: 1  Trans mode/rate: 64kbps, circuit-mode
(16)
>                              Ext: 1  User information layer 1: A-Law (35)
> [18 03 a9 83 82]
> Channel ID (len= 5) [ Ext: 1  IntID: Implicit, PRI Spare: 0, Exclusive
Dchan: 0
>                        ChanSel: Reserved
>                       Ext: 1  Coding: 0   Number Specified   Channel Type:
3
>                       Ext: 1  Channel: 2 ]
> [6c 0a 21 80 32 31 39 37 30 30 30 31]
> Calling Number (len=12) [ Ext: 0  TON: National Number (2)  NPI:
ISDN/Telephony Numbering Plan (E.164/E.163) (1)
>                           Presentation: Presentation permitted, user number
not screened (0) '21970001' ]
> [70 09 a1 32 32 36 30 32 36 31 34]
> Called Number (len=11) [ Ext: 1  TON: National Number (2)  NPI:
ISDN/Telephony Numbering Plan (E.164/E.163) (1) '22602614' ]
> [a1]
> Sending Complete (len= 1)
    -- Called g1/22602614
< Protocol Discriminator: Q.931 (8)  len=10
< Call Ref: len= 2 (reference 32830/0x803E) (Terminator)
< Message type: CALL PROCEEDING (2)
< [18 03 a9 83 82]
< Channel ID (len= 5) [ Ext: 1  IntID: Implicit, PRI Spare: 0, Exclusive
Dchan: 0
<                        ChanSel: Reserved
<                       Ext: 1  Coding: 0   Number Specified   Channel Type:
3
<                       Ext: 1  Channel: 2 ]
-- Processing IE 24 (cs0, Channel Identification)
< Protocol Discriminator: Q.931 (8)  len=9
< Call Ref: len= 2 (reference 32830/0x803E) (Terminator)
< Message type: PROGRESS (3)
< [1e 02 82 88]
< Progress Indicator (len= 4) [ Ext: 1  Coding: CCITT (ITU) standard (0) 0: 0
Location: Public network serving the local user (2)
<                               Ext: 1  Progress Description: Inband
information or appropriate pattern now available. (8) ]
-- Processing IE 30 (cs0, Progress Indicator)
NEW_HANGUP DEBUG: Calling q931_hangup, ourstate Outgoing call  Proceeding,
peerstate Incoming Call Proceeding
> Protocol Discriminator: Q.931 (8)  len=9
> Call Ref: len= 2 (reference 62/0x3E) (Originator)
> Message type: DISCONNECT (69)
> [08 02 81 90]
> Cause (len= 4) [ Ext: 1  Coding: CCITT (ITU) standard (0) 0: 0   Location:
Private network serving the local user (1)
>                  Ext: 1  Cause: Normal Clearing (16), class = Normal Event
(1) ]
    -- Hungup 'Zap/2-1'
  == Spawn extension (iax, 22602614, 4) exited non-zero on
'IAX2/sipgw1@sipgw1/2'
    -- Hungup 'IAX2/sipgw1@sipgw1/2'
< Protocol Discriminator: Q.931 (8)  len=5
< Call Ref: len= 2 (reference 32830/0x803E) (Terminator)
< Message type: RELEASE (77)
NEW_HANGUP DEBUG: Calling q931_hangup, ourstate Null, peerstate Release
Request
> Protocol Discriminator: Q.931 (8)  len=9
> Call Ref: len= 2 (reference 62/0x3E) (Originator)
> Message type: RELEASE COMPLETE (90)
> [08 02 81 90]
> Cause (len= 4) [ Ext: 1  Coding: CCITT (ITU) standard (0) 0: 0   Location:
Private network serving the local user (1)
>                  Ext: 1  Cause: Normal Clearing (16), class = Normal Event
(1) ]
NEW_HANGUP DEBUG: Calling q931_hangup, ourstate Null, peerstate Null
NEW_HANGUP DEBUG: Destroying the call, ourstate Null, peerstate Null