Code:
 == Using SIP RTP TOS bits 184
  == Using SIP RTP CoS mark 5
  == Everyone is busy/congested at this time (1:0/0/1)
    -- Executing [s@macro-dial-one:39] ExecIf("DAHDI/10-1", "0?Set(DIALSTATUS=)") in new stack
    -- Executing [s@macro-dial-one:40] GosubIf("DAHDI/10-1", "0?s-CHANUNAVAIL,1") in new stack
    -- Executing [s@macro-dial-one:41] MacroExit("DAHDI/10-1", "") in new stack
    -- Executing [s@macro-exten-vm:8] GotoIf("DAHDI/10-1", "0?exit") in new stack
    -- Executing [s@macro-exten-vm:9] Set("DAHDI/10-1", "SV_DIALSTATUS=CHANUNAVAIL") in new stack
    -- Executing [s@macro-exten-vm:10] GosubIf("DAHDI/10-1", "0?docfu,1") in new stack
    -- Executing [s@macro-exten-vm:11] GosubIf("DAHDI/10-1", "0?docfb,1") in new stack
    -- Executing [s@macro-exten-vm:12] Set("DAHDI/10-1", "DIALSTATUS=CHANUNAVAIL") in new stack
    -- Executing [s@macro-exten-vm:13] ExecIf("DAHDI/10-1", "0?MacroExit()") in new stack
    -- Executing [s@macro-exten-vm:14] GotoIf("DAHDI/10-1", "1?s-CHANUNAVAIL,1") in new stack
    -- Goto (macro-exten-vm,s-CHANUNAVAIL,1)
    -- Executing [s-CHANUNAVAIL@macro-exten-vm:1] GotoIf("DAHDI/10-1", "0?exit,1") in new stack
    -- Executing [s-CHANUNAVAIL@macro-exten-vm:2] PlayTones("DAHDI/10-1", "congestion") in new stack
    -- Executing [s-CHANUNAVAIL@macro-exten-vm:3] Congestion("DAHDI/10-1", "10") in new stack

> DL-DATA request
> Protocol Discriminator: Q.931 (8)  len=13
> TEI=0 Call Ref: len= 2 (reference 2107/0x83B) (Sent to originator)
> Message Type: PROGRESS (3)
TEI=0 Transmitting N(S)=17, window is open V(A)=16 K=7

> Protocol Discriminator: Q.931 (8)  len=13
> TEI=0 Call Ref: len= 2 (reference 2107/0x83B) (Sent to originator)
> Message Type: PROGRESS (3)
> [08 02 81 94]
> Cause (len= 4) [ Ext: 1  Coding: CCITT (ITU) standard (0)  Spare: 0  Location: Private network serving the local user (1)
>                  Ext: 1  Cause: Unknown (20), class = Normal Event (1) ]
> [1e 02 81 88]
> Progress Indicator (len= 4) [ Ext: 1  Coding: CCITT (ITU) standard (0)  0: 0  Location: Private network serving the local user (1)
>                               Ext: 1  Progress Description: Inband information or appropriate pattern now available. (8) ]
    -- Registered IAX2 '110' (AUTHENTICATED) at 127.0.0.1:45909
    -- Registered IAX2 '112' (AUTHENTICATED) at 127.0.0.1:39399
    -- Registered IAX2 '117' (AUTHENTICATED) at 127.0.0.1:44868
    -- Registered IAX2 '115' (AUTHENTICATED) at 127.0.0.1:57559
    -- Registered IAX2 '113' (AUTHENTICATED) at 127.0.0.1:59283
  == Spawn extension (macro-exten-vm, s-CHANUNAVAIL, 3) exited non-zero on 'DAHDI/10-1' in macro 'exten-vm'
  == Spawn extension (from-did-direct, 122, 2) exited non-zero on 'DAHDI/10-1'
    -- Executing [h@from-did-direct:1] Macro("DAHDI/10-1", "hangupcall,") in new stack
    -- Executing [s@macro-hangupcall:1] GotoIf("DAHDI/10-1", "1?theend") in new stack
    -- Goto (macro-hangupcall,s,3)
    -- Executing [s@macro-hangupcall:3] Hangup("DAHDI/10-1", "") in new stack
  == Spawn extension (macro-hangupcall, s, 3) exited non-zero on 'DAHDI/10-1' in macro 'hangupcall'
  == Spawn extension (from-did-direct, h, 1) exited non-zero on 'DAHDI/10-1'
q931_hangup: other hangup
NEW_HANGUP DEBUG: Calling q931_hangup, ourstate Incoming Call Proceeding, peerstate Outgoing Call Proceeding, hold-state Idle
q931.c:4845 q931_disconnect: Call 2107 enters state 11 (Disconnect Request).  Hold state: Idle