急！ D110E 拨不出去电话。。。

软交换后台设置 pri set debug on span 1 后，后台提示如下，哪位帮忙看看是什么错误 导致RELEASE COMPLETE

localhost*CLI>
== Using SIP RTP CoS mark 5
== Using SIP VRTP CoS mark 6
-- Executing [5400@default:1] Dial("SIP/6825-00000004", "dahdi/g0/5400,20,wWtT") in new stack
-- Making new call for cref 32773
-- Requested transfer capability: 0x00 - SPEECH
> DL-DATA request
> Protocol Discriminator: Q.931 ( len=31
> TEI=0 Call Ref: len= 2 (reference 5/0x5) (Sent from originator)
> Message Type: SETUP (5)
TEI=0 Transmitting N(S)=4, window is open V(A)=4 K=7
> Protocol Discriminator: Q.931 ( len=31
> TEI=0 Call Ref: len= 2 (reference 5/0x5) (Sent from originator)
> Message Type: SETUP (5)
> [04 03 80 90 a3]
> Bearer Capability (len= 5) [ Ext: 1 Coding-Std: 0 Info transfer capability: Speech (0)
> Ext: 1 Trans mode/rate: 64kbps, circuit-mode (16)
> User information layer 1: A-Law (35)
> [18 03 a1 83 81]
> Channel ID (len= 5) [ Ext: 1 IntID: Implicit Other(PRI) Spare: 0 Preferred Dchan: 0
> ChanSel: As indicated in following octets
> Ext: 1 Coding: 0 Number Specified Channel Type: 3
> Ext: 1 Channel: 1 Type: CPE]
> [6c 06 00 80 36 38 32 35]
> Calling Number (len= [ Ext: 0 TON: Unknown Number Type (0) NPI: Unknown Number Plan (0)
> Presentation: Presentation permitted, user number not screened (0) '6825' ]
> [70 05 80 35 34 30 30]
> Called Number (len= 7) [ Ext: 1 TON: Unknown Number Type (0) NPI: Unknown Number Plan (0) '5400' ]
> [a1]
> Sending Complete (len= 1)
q931.c:6036 q931_setup: Call 32773 enters state 1 (Call Initiated). Hold state: Idle
-- Called g0/5400
< Protocol Discriminator: Q.931 ( len=9
< TEI=0 Call Ref: len= 2 (reference 5/0x5) (Sent to originator)
< Message Type: RELEASE COMPLETE (90)
< [08 02 82 a2]
< Cause (len= 4) [ Ext: 1 Coding: CCITT (ITU) standard (0) Spare: 0 Location: Public network serving the local user (2)
< Ext: 1 Cause: Circuit/channel congestion (34), class = Network Congestion (resource unavailable) (2) ]
Received message for call 0x8bcc688 on link 0xb7929eb4 TEI/SAPI 0/0
-- Processing IE 8 (cs0, Cause)
q931.c:8567 post_handle_q931_message: Call 32773 enters state 0 (Null). Hold state: Idle
-- Channel 0/1, span 1 got hangup, cause 34
-- DAHDI/1-1 is circuit-busy
q931.c:6837 q931_hangup: Hangup other cref:32773
q931.c:6594 __q931_hangup: ourstate Null, peerstate Null, hold-state Idle
Destroying call 0x8bcc688, ourstate Null, peerstate Null, hold-state Idle
-- Hungup 'DAHDI/1-1'
== Everyone is busy/congested at this time (1:0/1/0)
-- Executing [5400@default:2] Hangup("SIP/6825-00000004", "") in new stack
== Spawn extension (default, 5400, 2) exited non-zero on 'SIP/6825-00000004'
localhost*CLI>

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