[asterisk-users] Outbound international calls over BT ISDN30

Tue Apr 29 09:49:54 CDT 2008

Hello all

As always I'm trying the mailing list as a last resort as I'm out of 
options. I am seemingly unable to dial international numbers over our BT 
ISDN30 line.

I've checked with BT and the number format they're expecting is:

	00<CC><number>

(where CC is the country code).

But this doesn't work. Looking at the PRI debug, the most notable error 
seems to be:

Message type: DISCONNECT (69)
[08 02 82 81]
Cause (len= 4) [ Ext: 1  Coding: CCITT (ITU) standard (0)  Spare: 0 
Location: Public network serving the local user (2)
Ext: 1  Cause: Unallocated (unassigned) number (1), class = Normal Event 
(0) ]

I've also tried different number formats, including:

	+CC<number>
	+0CC<number>

But to no avail.

Anybody know what I'm doing wrong? Here's a complete debug dump of a 
failed international call to the US:

Many thanks

Stu

     -- Executing [s at macro-outgoing:2] Dial("SIP/sbf-b7c104e0", 
"Zap/g1/0012127551200") in new stack
-- Making new call for cr 33090
     -- Requested transfer capability: 0x00 - SPEECH
 > Protocol Discriminator: Q.931 (8)  len=47
 > Call Ref: len= 2 (reference 322/0x142) (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 83]
 > 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: 3 ]
 > [6c 0d 21 80 30 31 36 31 34 38 36 37 37 38 30]
 > Calling Number (len=15) [ Ext: 0  TON: National Number (2)  NPI: 
ISDN/Telephony Numbering Plan (E.164/E.163) (1)
 >                           Presentation: Presentation permitted, user 
number not screened (0)  '01614867780' ]
 > [70 0e a1 30 30 31 32 31 32 37 35 35 31 32 30 30]
 > Called Number (len=16) [ Ext: 1  TON: National Number (2)  NPI: 
ISDN/Telephony Numbering Plan (E.164/E.163) (1)  '0012127551200' ]
 > [a1]on*CLI>
 > Sending Complete (len= 1)
q931.c:2881 q931_setup: call 33090 on channel 3 enters state 1 (Call 
Initiated)
     -- Called g1/0012127551200
< Protocol Discriminator: Q.931 (8)  len=10
< Call Ref: len= 2 (reference 322/0x142) (Terminator)
< Message type: CALL PROCEEDING (2)
< [18 03 a9 83 83]
< 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: 3 ]
-- Processing IE 24 (cs0, Channel Identification)
q931.c:3428 q931_receive: call 33090 on channel 3 enters state 3 
(Outgoing call  Proceeding)
     -- Zap/3-1 is proceeding passing it to SIP/sbf-b7c104e0
< Protocol Discriminator: Q.931 (8)  len=13
< Call Ref: len= 2 (reference 322/0x142) (Terminator)
< Message type: DISCONNECT (69)
< [08 02 82 81]
< Cause (len= 4) [ Ext: 1  Coding: CCITT (ITU) standard (0)  Spare: 0 
Location: Public network serving the local user (2)
<                  Ext: 1  Cause: Unallocated (unassigned) number (1), 
class = Normal Event (0) ]
< [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 8 (cs0, Cause)
-- Processing IE 30 (cs0, Progress Indicator)
q931.c:3563 q931_receive: call 33090 on channel 3 enters state 12 
(Disconnect Indication)
     -- Channel 0/3, span 1 got hangup request, cause 1
NEW_HANGUP DEBUG: Calling q931_hangup, ourstate Disconnect Indication, 
peerstate Disconnect Request
q931.c:2716 q931_release: call 33090 on channel 3 enters state 19 
(Release Request)
 > Protocol Discriminator: Q.931 (8)  len=9
 > Call Ref: len= 2 (reference 322/0x142) (Originator)
 > Message type: RELEASE (77)
 > [08 02 81 81]
 > Cause (len= 4) [ Ext: 1  Coding: CCITT (ITU) standard (0)  Spare: 0 
Location: Private network serving the local user (1)
 >                  Ext: 1  Cause: Unallocated (unassigned) number (1), 
class = Normal Event (0) ]
     -- Hungup 'Zap/3-1'
   == Everyone is busy/congested at this time (1:0/0/1)
     -- Executing [s at macro-outgoing:3] Hangup("SIP/sbf-b7c104e0", "") in 
new stack
   == Spawn extension (macro-outgoing, s, 3) exited non-zero on 
'SIP/sbf-b7c104e0' in macro 'outgoing'
   == Spawn extension (macro-outgoing, s, 3) exited non-zero on 
'SIP/sbf-b7c104e0'
< Protocol Discriminator: Q.931 (8)  len=5
< Call Ref: len= 2 (reference 322/0x142) (Terminator)
< Message type: RELEASE COMPLETE (90)
q931.c:3503 q931_receive: call 33090 on channel 3 enters state 0 (Null)
NEW_HANGUP DEBUG: Calling q931_hangup, ourstate Null, peerstate Null
NEW_HANGUP DEBUG: Destroying the call, ourstate Null, peerstate Null

-- 
Stuart Benjamin Ford
Chief Technical Officer

Zimo Communications Ltd.
Metropolitan House
Station Road
Cheadle Hulme
Cheshire SK8 7AZ

0800 321 3000 (Switchboard)
08703 850 860 (Fax)
0800 321 3763 (Direct)

sbf at zimo.co.uk
www.zimo.co.uk