== Using SIP RTP CoS mark 5
    -- Executing [4321@default:1] Dial("SIP/1000-00000001", "DAHDI/G1/4169100803,1000,r") in new stack
-- Making new call for cr 32771
    -- Requested transfer capability: 0x00 - SPEECH
> Protocol Discriminator: Q.931 (8)  len=54
> Call Ref: len= 2 (reference 3/0x3) (Originator)
> Message type: SETUP (5)
> [04 03 80 90 a2]
> Bearer Capability (len= 5) [ Ext: 1  Q.931 Std: 0  Info transfer capability: Speech (0)
>                              Ext: 1  Trans mode/rate: 64kbps, circuit-mode (16)
>                                User information layer 1: u-Law (34)
> [18 04 e1 81 83 97]
> Channel ID (len= 6) [ Ext: 1  IntID: Explicit  PRI  Spare: 0  Preferred  Dchan: 0
>                        ChanSel: As indicated in following octets
>                       Ext: 1  DS1 Identifier: 1
>                       Ext: 1  Coding: 0  Number Specified  Channel Type: 3
>                       Ext: 1  Channel: 23 ]
> [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 0b b1 4d 69 6b 65 20 43 75 72 72 79]
> Display (len=11) Charset: 31 [ Mike Curry ]
> [6c 06 21 81 31 30 30 30]
> Calling Number (len= 8) [ 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)  '1000' ]
> [70 0b 80 34 31 36 39 31 30 30 38 30 33]
> Called Number (len=13) [ Ext: 1  TON: Unknown Number Type (0)  NPI: Unknown Number Plan (0)  '4169100803' ]
q931.c:3134 q931_setup: call 32771 on channel 23 enters state 1 (Call Initiated)
    -- Called G1/4169100803
< Protocol Discriminator: Q.931 (8)  len=10
< Call Ref: len= 2 (reference 3/0x3) (Terminator)
< Message type: RELEASE COMPLETE (90)
< [08 03 82 e4 18]
< Cause (len= 5) [ Ext: 1  Coding: CCITT (ITU) standard (0)  Spare: 0  Location: Public network serving the local user (2)
<                  Ext: 1  Cause: Invalid information element contents (100), class = Protocol Error (e.g. unknown message) (6) ]
<              Cause data 1: 18 (24)
-- Processing IE 8 (cs0, Cause)
q931.c:3766 q931_receive: call 32771 on channel 23 enters state 0 (Null)
    -- Channel 1/23, span 1 got hangup, cause 100
NEW_HANGUP DEBUG: Calling q931_hangup, ourstate Null, peerstate Null
NEW_HANGUP DEBUG: Destroying the call, ourstate Null, peerstate Null
    -- Hungup 'DAHDI/23-1'
  == Everyone is busy/congested at this time (1:0/0/1)
    -- Auto fallthrough, channel 'SIP/1000-00000001' status is 'CHANUNAVAIL'