昨天我们在安装 Asterisk 时出现了奇怪的问题。
通过 ISDN BRI 拨出时，呼叫失败并记录以下错误：
Unable to create channel of type 'DAHDI' (cause 34 - Circuit/channel congestion)
我已经重新启动了服务器，检查了配置文件，并与线路提供商（BT）确认线路没有故障。
来电畅通，通过 PSTN 线路拨出电话也畅通无阻。
如果有人有任何想法的话，真的需要一些建议吗？
dahdi-channels.conf：
; Autogenerated by /usr/sbin/dahdi_genconf on Thu Oct 9 10:05:01 2014
; If you edit this file and execute /usr/sbin/dahdi_genconf again,
; your manual changes will be LOST.
; Dahdi Channels Configurations (chan_dahdi.conf)
;
; This is not intended to be a complete chan_dahdi.conf. Rather, it is intended
; to be #include-d by /etc/chan_dahdi.conf that will include the global settings
;
; Span 1: XBUS-00/XPD-00 "Xorcom XPD #00/00: BRI_TE" (MASTER) AMI/CCS
group=11
context=from-zaptel
switchtype = euroisdn
signalling = bri_cpe_ptmp
channel => 1-2
context = default
; Span 2: XBUS-00/XPD-01 "Xorcom XPD #00/01: BRI_TE" AMI/CCS
group=12
context=from-zaptel
switchtype = euroisdn
signalling = bri_cpe_ptmp
channel => 4-5
context = default
; Span 3: XBUS-00/XPD-10 "Xorcom XPD #00/10: FXO"
;;; line="7 XPP_FXO/00/10/0 FXSKS (In use) (no pcm) (SWEC: OSLEC)"
signalling=fxs_ks
callerid=asreceived
group=0
context=from-zaptel
channel => 7
callerid=
group=
context=default
拨号计划部分：
[from-trunk] ; just an alias since VoIP shouldn't be called PSTN
include => from-pstn
[from-pstn]
include => from-pstn-custom ; create this context in extensions_custom.conf to include customizations
include => ext-did
include => ext-did-post-custom
include => from-did-direct ; MODIFICATION (PL) for findmefollow if enabled, should be before ext-local
include => ext-did-catchall ; THIS MUST COME AFTER ext-did
exten => fax,1,Goto(ext-fax,in_fax,1)
PRI 的调试日志详细程度设置为 127，调试设置为 50...
localhost*CLI> originate dahdi/g11/01234567890 application playback demo-congrats
1 -- Making new call for cr 226
-- Requested transfer capability: 0x00 - SPEECH
1 -- Restarting T203 counter
1 > Protocol Discriminator: Q.931 (8) len=31
1 > Call Ref: len= 1 (reference 98/0x62) (Originator)
1 > Message type: SETUP (5)
1 > [04 03 80 90 a3]
1 > Bearer Capability (len= 5) [ Ext: 1 Q.931 Std: 0 Info transfer capability: Speech (0)
1 > Ext: 1 Trans mode/rate: 64kbps, circuit-mode (16)
1 > Ext: 1 User information layer 1: A-Law (35)
1 > [18 01 81]
1 > Channel ID (len= 3) [ Ext: 1 IntID: Implicit Other Spare: 0 Preferred Dchan: 0
1 > ChanSel: B1 channel
1 ]
1 > [6c 02 21 83]
1 > Calling Number (len= 4) [ Ext: 0 TON: National Number (2) NPI: ISDN/Telephony Numbering Plan (E.164/E.163) (1)
1 > Presentation: Presentation allowed of network provided number (3) '' ]
1 > [70 0c a1 30 37 37 34 37 36 30 33 36 32 33]
1 > Called Number (len=14) [ Ext: 1 TON: National Number (2) NPI: ISDN/Telephony Numbering Plan (E.164/E.163) (1) '01234567890' ]
1 > [a1]
1 > Sending Complete (len= 1)
1 q931.c:3637 q931_setup: call 226 on channel 1 enters state 1 (Call Initiated)
1 -- Restarting T203 counter
1 -- Restarting T203 counter
1 < Protocol Discriminator: Q.931 (8) len=7
1 < Call Ref: len= 1 (reference 226/0xE2) (Terminator)
1 < Message type: CALL PROCEEDING (2)
1 < [18 01 89]
1 < Channel ID (len= 3) [ Ext: 1 IntID: Implicit Other Spare: 0 Exclusive Dchan: 0
1 < ChanSel: B1 channel
1 ]
1 -- Processing IE 24 (cs0, Channel Identification)
1 q931.c:4405 q931_receive: call 226 on channel 1 enters state 3 (Outgoing call Proceeding)
1 -- Restarting T203 counter
1 -- Restarting T203 counter
1 -- Restarting T203 counter
1 -- Restarting T203 counter
1 < Protocol Discriminator: Q.931 (8) len=12
1 < Call Ref: len= 1 (reference 226/0xE2) (Terminator)
1 < Message type: DISCONNECT (69)
1 < [08 02 82 81]
1 < Cause (len= 4) [ Ext: 1 Coding: CCITT (ITU) standard (0) Spare: 0 Location: Public network serving the local user (2)
1 < Ext: 1 Cause: Unallocated (unassigned) number (1), class = Normal Event (0) ]
1 < [1e 02 82 88]
1 < Progress Indicator (len= 4) [ Ext: 1 Coding: CCITT (ITU) standard (0) 0: 0 Location: Public network serving the local user (2)
1 < Ext: 1 Progress Description: Inband information or appropriate pattern now available. (8) ]
1 -- Processing IE 8 (cs0, Cause)
1 -- Processing IE 30 (cs0, Progress Indicator)
1 q931.c:4558 q931_receive: call 226 on channel 1 enters state 12 (Disconnect Indication)
1 -- Restarting T203 counter
-- Channel 0/1, span 1 got hangup request, cause 1
1 NEW_HANGUP DEBUG: Calling q931_hangup, ourstate Disconnect Indication, peerstate Disconnect Request
1 q931.c:3435 q931_release: call 226 on channel 1 enters state 19 (Release Request)
1 -- Restarting T203 counter
1 > Protocol Discriminator: Q.931 (8) len=8
1 > Call Ref: len= 1 (reference 98/0x62) (Originator)
1 > Message type: RELEASE (77)
1 > [08 02 81 81]
1 > Cause (len= 4) [ Ext: 1 Coding: CCITT (ITU) standard (0) Spare: 0 Location: Private network serving the local user (1)
1 > Ext: 1 Cause: Unallocated (unassigned) number (1), class = Normal Event (0) ]
-- Hungup 'DAHDI/1-1'
1 -- Restarting T203 counter
1 -- Restarting T203 counter
1 < Protocol Discriminator: Q.931 (8) len=4
1 < Call Ref: len= 1 (reference 226/0xE2) (Terminator)
1 < Message type: RELEASE COMPLETE (90)
1 q931.c:4490 q931_receive: call 226 on channel 1 enters state 0 (Null)
1 NEW_HANGUP DEBUG: Calling q931_hangup, ourstate Null, peerstate Null
1 NEW_HANGUP DEBUG: Destroying the call, ourstate Null, peerstate Null
1 -- Restarting T203 counter
谢谢。
答案1
原因部分表明所拨打的号码未分配或未分配。您是否能够以不同的方式拨号？例如，通过添加或删除国家代码？
1 < Cause (len= 4) [ Ext: 1 Coding: CCITT (ITU) standard (0) Spare: 0 Location: Public network serving the local user (2)
1 < Ext: 1 Cause: Unallocated (unassigned) number (1), class = Normal Event (0) ]
根据更新输出，您拨打的是“dahdi/g11/01234567890”。输出显示，Aterisk 正在拨打该号码。