> Message type: CONNECT ACKNOWLEDGE (15)
    -- Zap/6-1 answered Zap/1-1
    -- Native bridging Zap/1-1 and Zap/6-1
> Protocol Discriminator: Q.931 (8)  len=27
> Call Ref: len= 2 (reference 4864/0x1300) (Terminator)
> Message type: FACILITY (98)
> [1c 14 91 a1 11 02 01 03 06 07 2a 86 48 ce 15 00 08 30 03 02 01 04]
> Facility (len=22, codeset=0) [ 0x91, 0xA1, 0x11, 0x02, 0x01, 0x03, 0x06, 0x07, '*', 0x86, 'H', 0xCE, 0x15, 0x00, 0x08, '0', 0x03, 0x02, 0x01, 0x04 ]
PROTOCOL 11
A1 0011 (CONTEXT SPECIFIC [1])
  02 0001 03 (INTEGER: 3)
  06 0007 2A 86 48 CE 15 00 08 (OBJECTIDENTIFIER: 2a 86 48 ce 15 00 08)
  30 0003 (SEQUENCE)
    02 0001 04 (INTEGER: 4)
< Protocol Discriminator: Q.931 (8)  len=10
< Call Ref: len= 2 (reference 4864/0x1300) (Originator)
< Message type: RELEASE COMPLETE (90)
< [08 03 82 e0 1c]
< Cause (len= 5) [ Ext: 1  Coding: CCITT (ITU) standard (0)  Spare: 0  Location: Public network serving the local user (2)
<                  Ext: 1  Cause: Mandatory information element is missing (96), class = Protocol Error (e.g. unknown message) (6) ]
<              Cause data 1: 1c (28)
-- Processing IE 8 (cs0, Cause)
q931.c:3503 q931_receive: call 4864 on channel 1 enters state 0 (Null)
    -- Channel 0/1, span 1 got hangup, cause 96
NEW_HANGUP DEBUG: Calling q931_hangup, ourstate Active, peerstate Connect Request