debian*CLI> 
    -- Executing [174@default:1] Dial("SIP/525-08264520", "Zap/g1/174||r") in new stack
-- Making new call for cr 32856
    -- Requested transfer capability: 0x00 - SPEECH
> Protocol Discriminator: Q.931 (8)  len=38
> Call Ref: len= 2 (reference 88/0x58) (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 a1 83 81]
> Channel ID (len= 5) [ Ext: 1  IntID: Implicit  PRI  Spare: 0  Preferred  Dchan: 0
>                        ChanSel: Reserved
>                       Ext: 1  Coding: 0  Number Specified  Channel Type: 3
>                       Ext: 1  Channel: 1 ]
> [1e 02 80 83]
> Progress Indicator (len= 4) [ Ext: 1  Coding: CCITT (ITU) standard (0)  0: 0  Location: User (0)
>                               Ext: 1  Progress Description: Calling equipment is non-ISDN. (3) ]
> [28 04 b1 35 32 35]
> Display (len= 4) Charset: 31 [ 525 ]
> [6c 05 21 81 35 32 35]
> Calling Number (len= 7) [ Ext: 0  TON: National Number (2)  NPI: ISDN/Telephony Numbering Plan (E.164/E.163) (1)
>                           Presentation: Presentation permitted, user number passed network screening (1)  '525' ]
> [70 04 a1 31 37 34]
> Called Number (len= 6) [ Ext: 1  TON: National Number (2)  NPI: ISDN/Telephony Numbering Plan (E.164/E.163) (1)  '174' ]
q931.c:2879 q931_setup: call 32856 on channel 1 enters state 1 (Call Initiated)
    -- Called g1/174
< Protocol Discriminator: Q.931 (8)  len=10
< Call Ref: len= 2 (reference 88/0x58) (Terminator)
< Message type: SETUP ACKNOWLEDGE (13)
< [18 03 a1 83 81]
< Channel ID (len= 5) [ Ext: 1  IntID: Implicit  PRI  Spare: 0  Preferred  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:3620 q931_receive: call 32856 on channel 1 enters state 2 (Overlap sending)
< Protocol Discriminator: Q.931 (8)  len=5
< Call Ref: len= 2 (reference 88/0x58) (Terminator)
< Message type: CALL PROCEEDING (2)
q931.c:3426 q931_receive: call 32856 on channel 1 enters state 3 (Outgoing call  Proceeding)
    -- Zap/1-1 is proceeding passing it to SIP/525-08264520
< Protocol Discriminator: Q.931 (8)  len=5
< Call Ref: len= 2 (reference 88/0x58) (Terminator)
< Message type: ALERTING (1)
q931.c:3341 q931_receive: call 32856 on channel 1 enters state 4 (Call Delivered)
    -- Zap/1-1 is ringing
NEW_HANGUP DEBUG: Calling q931_hangup, ourstate Call Delivered, peerstate Call Received
q931.c:2763 q931_disconnect: call 32856 on channel 1 enters state 11 (Disconnect Request)
> Protocol Discriminator: Q.931 (8)  len=9
> Call Ref: len= 2 (reference 88/0x58) (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'
[Nov 13 13:51:18] NOTICE[22949]: cdr.c:434 ast_cdr_free: CDR on channel 'Zap/1-1' not posted
  == Spawn extension (default, 174, 1) exited non-zero on 'SIP/525-08264520'
Really destroying SIP dialog 'CALL_ID13_00179A52B9BA_T1500943842@192.168.16.2' Method: ACK
< Protocol Discriminator: Q.931 (8)  len=5
< Call Ref: len= 2 (reference 88/0x58) (Terminator)
< Message type: RELEASE (77)
q931.c:3536 q931_receive: call 32856 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 88/0x58) (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