-- Requested transfer capability: 0x00 - SPEECH
> Protocol Discriminator: Q.931 (8)  len=40
> Call Ref: len= 2 (reference 24/0x18) (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 81]
> 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: 1 ]
> [6c 08 21 80 32 31 37 36 37 31]
> Calling Number (len=10) [ Ext: 0  TON: National Number (2)  NPI: ISDN/Telephony Numbering Plan (E.164/E.163) (1)
>                           Presentation: Presentation permitted, user number not screened (0)  '217671' ]
> [70 0c a1 30 37 37 32 30 34 30 34 35 32 30]
> Called Number (len=14) [ Ext: 1  TON: National Number (2)  NPI: ISDN/Telephony Numbering Plan (E.164/E.163) (1)  '07720404520' ]
> [a1]
> Sending Complete (len= 1)
q931.c:2881 q931_setup: call 32792 on channel 1 enters state 1 (Call Initiated)
    -- Called g1/07720404520
< Protocol Discriminator: Q.931 (8)  len=10
< Call Ref: len= 2 (reference 24/0x18) (Terminator)
< Message type: CALL PROCEEDING (2)
< [18 03 a9 83 81]
< 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: 1 ]
-- Processing IE 24 (cs0, Channel Identification)
q931.c:3428 q931_receive: call 32792 on channel 1 enters state 3 (Outgoing call  Proceeding)
    -- Zap/1-1 is proceeding passing it to SIP/230-0827a320
NEW_HANGUP DEBUG: Calling q931_hangup, ourstate Outgoing call  Proceeding, peerstate Incoming Call Proceeding
q931.c:2764 q931_disconnect: call 32792 on channel 1 enters state 11 (Disconnect Request)
> Protocol Discriminator: Q.931 (8)  len=9
> Call Ref: len= 2 (reference 24/0x18) (Originator)
> Message type: DISCONNECT (69)
> [08 02 81 90]
> Cause (len= 4) [ Ext: 1  Coding: CCITT (ITU) standard (0)  Spare: 0  Location: Private network serving the local user (1)
>                  Ext: 1  Cause: Normal Clearing (16), class = Normal Event (1) ]
    -- Hungup 'Zap/1-1'
  == Spawn extension (internal, 907720404520, 2) exited non-zero on 'SIP/230-0827a320'
< Protocol Discriminator: Q.931 (8)  len=5
< Call Ref: len= 2 (reference 24/0x18) (Terminator)
< Message type: RELEASE (77)
q931.c:3538 q931_receive: call 32792 on channel 1 enters state 0 (Null)
NEW_HANGUP DEBUG: Calling q931_hangup, ourstate Null, peerstate Release Request
> Protocol Discriminator: Q.931 (8)  len=9
> Call Ref: len= 2 (reference 24/0x18) (Originator)
> Message type: RELEASE COMPLETE (90)
> [08 02 81 90]
> Cause (len= 4) [ Ext: 1  Coding: CCITT (ITU) standard (0)  Spare: 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
    -- Hungup 'IAX2/txrxcomms-4'
  == Spawn extension (internal, 801384215566, 2) exited non-zero on 'SIP/205-08266530'