test*CLI> pri set debug on span 1
Enabled debugging on span 1
    -- Executing [4888@trusted:1] Set("SIP/GXP0001-09b01018", "CALLERID(num)=8512") in new stack
    -- Executing [4888@trusted:2] Dial("SIP/GXP0001-09b01018", "DAHDI/r0/4888,,r") in new stack
-- Making new call for cr 32774
    -- Requested transfer capability: 0x00 - SPEECH
> Protocol Discriminator: Q.931 (8)  len=31
> Call Ref: len= 2 (reference 6/0x6) (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)
>                                User information layer 1: A-Law (35)
> [18 04 e1 80 83 84]
> Channel ID (len= 6) [ Ext: 1  IntID: Explicit  PRI  Spare: 0  Preferred  Dchan: 0
>                        ChanSel: As indicated in following octets
>                       Ext: 1  DS1 Identifier: 0
>                       Ext: 1  Coding: 0  Number Specified  Channel Type: 3
>                       Ext: 1  Channel: 4 Type: CPE]
> [6c 06 00 80 38 35 31 32]
> Calling Number (len= 8) [ Ext: 0  TON: Unknown Number Type (0)  NPI: Unknown Number Plan (0)
>                           Presentation: Presentation permitted, user number not screened (0)  '8512' ]
> [70 05 80 34 38 38 38]
> Called Number (len= 7) [ Ext: 1  TON: Unknown Number Type (0)  NPI: Unknown Number Plan (0)  '4888' ]
q931.c:3211 q931_setup: call 32774 on channel 4 enters state 1 (Call Initiated)
    -- Called r0/4888
< Protocol Discriminator: Q.931 (8)  len=10
< Call Ref: len= 2 (reference 6/0x6) (Terminator)
< Message Type: RELEASE COMPLETE (90)
< [08 03 81 e4 18]
< Cause (len= 5) [ Ext: 1  Coding: CCITT (ITU) standard (0)  Spare: 0  Location: Private network serving the local user (1)
<                  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:3963 post_handle_q931_message: call 32774 on channel 4 enters state 0 (Null)
    -- Channel 0/4, 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/4-1'
  == Everyone is busy/congested at this time (1:0/0/1)
    -- Auto fallthrough, channel 'SIP/GXP0001-09b01018' status is 'CHANUNAVAIL'
test*CLI>