我在 Ubuntu 12.04.2 LTS 上安装了 dahdi 2.7 和 asterisk 11。我很难配置 DAHDI 频道。我有一张来自 Digium 的 AEX 808 卡，我的电话线上有 8 个 FXO 端口的卡插入卡的端口 1。
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， 除了我编辑了 dahdi_channels.conf 以指向与通道 2 的通道号相同的组号- 8 因为我认为星号正试图从频道 1 以外的频道拨打电话，因为它们之前都在 group=0 中。
这是我的配置文件：
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，当我启动星号时，我收到以下与 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
我不确定为什么它说“正在使用”，因为当前没有正在处理的呼叫。我不确定这是否是 AEX808 卡的默认输出。我怎样才能让我的 DAHDI 与星号一起工作？我究竟做错了什么？
dahdi 的结果以星号显示状态：
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，将不胜感激。
提前致谢！