配置DAHDI通道

Question

我在Ubuntu 12.04.2 LTS上安装了dahdi 2.7和asterisk 11。我在配置DAHDI通道时遇到了困难。我有一张来自Digium的AEX 808卡，电话线上的那张卡有8个FXO端口，插在卡的1号端口上。

我在示例安装部分下的http://www.voip-info.org/wiki/view/DAHDI中遵循了完全相同的步骤，只是我编辑了dahdi_channels.conf，使其指向与通道2-8的通道编号相同的组号，因为我认为asterisk试图从通道1以外的通道进行呼叫，因为它们以前都在group=0中。

以下是我的配置文件：

chan_dahdi.conf：

[trunkgroups]

; No trunk groups are needed in this configuration.

[channels]
#include /etc/asterisk/dahdi-channels.conf
; The channels context is used when defining channels using the
; older deprecated method.  Don't use this as a section name.

;[phone](!)
;
; A template to hold common options for all phones.
;
usecallerid = yes
hidecallerid = no
callwaiting = no
;threewaycalling = yes
transfer = yes
echocancel = yes
echotraining = yes
immediate = no

dahdi_channels.conf：

; Autogenerated by /usr/sbin/dahdi_genconf on Thu Aug  8 15:55:40 2013
; 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: WCTDM/0 "Wildcard AEX800" (MASTER) 
;;; line="1 WCTDM/0/0 FXSKS  (In use) (EC: VPMOCT032 - INACTIVE)"
signalling=fxs_ks
callerid=asreceived
group=0
context=from-pstn
channel => 1
callerid=
group=
context=default

;;; line="2 WCTDM/0/1 FXSKS  (In use) (EC: VPMOCT032 - INACTIVE)"
signalling=fxs_ks
callerid=asreceived
group=2
context=from-pstn
channel => 2
callerid=
group=
context=default

;;; line="3 WCTDM/0/2 FXSKS  (In use) (EC: VPMOCT032 - INACTIVE)"
signalling=fxs_ks
callerid=asreceived
group=3
context=from-pstn
channel => 3
callerid=
group=
context=default

;;; line="4 WCTDM/0/3 FXSKS  (In use) (EC: VPMOCT032 - INACTIVE)"
signalling=fxs_ks
callerid=asreceived
group=4
context=from-pstn
channel => 4
callerid=
group=
context=default

;;; line="5 WCTDM/0/4 FXSKS  (In use) (EC: VPMOCT032 - INACTIVE)"
signalling=fxs_ks
callerid=asreceived
group=5
context=from-pstn
channel => 5
callerid=
group=
context=default

;;; line="6 WCTDM/0/5 FXSKS  (In use) (EC: VPMOCT032 - INACTIVE)"
signalling=fxs_ks
callerid=asreceived
group=6
context=from-pstn
channel => 6
callerid=
group=
context=default

;;; line="7 WCTDM/0/6 FXSKS  (In use) (EC: VPMOCT032 - INACTIVE)"
signalling=fxs_ks
callerid=asreceived
group=7
context=from-pstn
channel => 7
callerid=
group=
context=default

;;; line="8 WCTDM/0/7 FXSKS  (In use) (EC: VPMOCT032 - INACTIVE)"
signalling=fxs_ks
callerid=asreceived
group=8
context=from-pstn
channel => 8
callerid=
group=
context=default

/etc/dahdi/system.conf：

# Autogenerated by /usr/sbin/dahdi_genconf on Thu Aug  8 15:55:40 2013
# If you edit this file and execute /usr/sbin/dahdi_genconf again,
# your manual changes will be LOST.
# Dahdi Configuration File
#
# This file is parsed by the Dahdi Configurator, dahdi_cfg
#
# Span 1: WCTDM/0 "Wildcard AEX800" (MASTER) 
fxsks=1
echocanceller=mg2,1
fxsks=2
echocanceller=mg2,2
fxsks=3
echocanceller=mg2,3
fxsks=4
echocanceller=mg2,4
fxsks=5
echocanceller=mg2,5
fxsks=6
echocanceller=mg2,6
fxsks=7
echocanceller=mg2,7
fxsks=8
echocanceller=mg2,8

使用这些配置文件，当我启动asterisk时，我得到以下与DAHDI相关的错误：

[Aug  8 15:56:26] WARNING[25198] chan_dahdi.c: Unable to specify channel 1: Device or resource busy
[Aug  8 15:56:26] ERROR[25198] chan_dahdi.c: Unable to open channel 1: Device or resource busy
[Aug  8 15:56:26] ERROR[25198] chan_dahdi.c: Unable to register channel '1'

这是来自unix终端的lsdahdi的结果：

### Span  1: WCTDM/0 "Wildcard AEX800" (MASTER) 
  1 FXO        FXSKS       (In use) (EC: VPMOCT032 - INACTIVE)  
  2 FXO        FXSKS       (In use) (EC: VPMOCT032 - INACTIVE)  RED
  3 FXO        FXSKS       (In use) (EC: VPMOCT032 - INACTIVE)  RED
  4 FXO        FXSKS       (In use) (EC: VPMOCT032 - INACTIVE)  RED
  5 FXO        FXSKS       (In use) (EC: VPMOCT032 - INACTIVE)  RED
  6 FXO        FXSKS       (In use) (EC: VPMOCT032 - INACTIVE)  RED
  7 FXO        FXSKS       (In use) (EC: VPMOCT032 - INACTIVE)  RED
  8 FXO        FXSKS       (In use) (EC: VPMOCT032 - INACTIVE)  RED

我不确定为什么它会显示“正在使用”，因为目前没有任何呼叫正在处理。我不确定这是否是AEX808卡的默认输出。如何让我的DAHDI与asterisk一起工作？我做错了什么？

dahdi以星号显示状态的结果：

 astersik*CLI> dahdi show status
 No such command 'dahdi show status' (type 'core show help dahdi show' for other possible commands)

dahdi_cfg -vvvv的输出：

DAHDI Tools Version - 2.7.0-rc1

DAHDI Version: 2.7.0-rc1
Echo Canceller(s): HWEC
Configuration
======================


Channel map:

Channel 01: FXS Kewlstart (Default) (Echo Canceler: mg2) (Slaves: 01)
Channel 02: FXS Kewlstart (Default) (Echo Canceler: mg2) (Slaves: 02)
Channel 03: FXS Kewlstart (Default) (Echo Canceler: mg2) (Slaves: 03)
Channel 04: FXS Kewlstart (Default) (Echo Canceler: mg2) (Slaves: 04)
Channel 05: FXS Kewlstart (Default) (Echo Canceler: mg2) (Slaves: 05)
Channel 06: FXS Kewlstart (Default) (Echo Canceler: mg2) (Slaves: 06)
Channel 07: FXS Kewlstart (Default) (Echo Canceler: mg2) (Slaves: 07)
Channel 08: FXS Kewlstart (Default) (Echo Canceler: mg2) (Slaves: 08)

8 channels to configure.

Setting echocan for channel 1 to mg2
Setting echocan for channel 2 to mg2
Setting echocan for channel 3 to mg2
Setting echocan for channel 4 to mg2
Setting echocan for channel 5 to mg2
Setting echocan for channel 6 to mg2
Setting echocan for channel 7 to mg2
Setting echocan for channel 8 to mg2

任何帮助都将不胜感激。

提前感谢！

Answer 1

经过大量的调查，我意识到DAHDI没有正确安装。我从系统中删除了DAHDI和asterisk，并重新安装了一切以使其正常工作。

Answer 2

检查以下各项的输出：

dahdi_cfg -vvvvv