asterisk users - Aug 2008 - can not load chan_dahdi.so from asterisk!

hello, all of users:
i have a problem with loading chan_dahdi.so. when i start asterisk, it always
reports the can not open channel 1 in ...
here is my setting: in etc/system/dahdi.conf:
# Global data
fxsks=1
fxsks=2
fxoks=3
fxoks=4
loadzone        = us
defaultzone     = us
--------------------- in my chan_dahdi.conf---------------
group=0
signalling=fxs_ks
context=from-internal
channel => 1
channel => 2
signalling=fxo_ks
context=demo
channel => 3
channel => 4
----------dmesg----------------
dahdi: Registered Span 1 ('WCTDM/4') with 4 channels
dahdi: Span ('WCTDM/4') is new master
Freshmaker version: 71
Freshmaker passed register test
Module 0: Installed -- AUTO FXO (FCC mode)
Module 1: Installed -- AUTO FXO (FCC mode)
Module 2: Installed -- AUTO FXS/DPO
Module 3: Installed -- AUTO FXS/DPO
Found a Wildcard TDM: Wildcard TDM400P REV E/F (4 modules)
---------------------------------
one error is that there is no transcode under /dev/dahdi, i do not why.
[root at new-host-13 dahdi]# ls
1  2  3  4  channel  ctl  pseudo  timer
[root at new-host-13 dahdi]#
and load from asterisk:
============Connected to Asterisk SVN-trunk-r140246 currently running on
new-host-13 (pid = 2664)
Verbosity is at least 50
new-host-13*CLI> module load chan_dahdi.so
Unable to load module chan_dahdi.so
Command 'module load chan_dahdi.so' failed.
  == Parsing '/etc/asterisk/chan_dahdi.conf':   == Found
  == Parsing '/etc/asterisk/users.conf':   == Found
[Aug 28 11:25:57] WARNING[2797]: chan_dahdi.c:1139 dahdi_open: Unable to specify
channel 1: No such device or address
[Aug 28 11:25:57] ERROR[2797]: chan_dahdi.c:8346 mkintf: Unable to open channel
1: No such device or address
here = 0, tmp->channel = 1, channel = 1
[Aug 28 11:25:57] ERROR[2797]: chan_dahdi.c:13646 build_channels: Unable to
register channel '1'
new-host-13*CLI>
=========================any one has idea for that problem? 
the second question is about modprobe the modules.  is the ztcfg command still
workable  for DAHDI? it always opens zaptel.conf file.  what is the steps to
load modules:
--- like this------
modprobe dahdi
modprobe wctdm
ztcfg -vvvvvvvvvvvvvvv; but my one open zaptel.conf file, i installed zaptel
before. it should open dahdi.conf.
i am still investgating DAHDI for further testing. thanks!
zhu

       
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On Thu, Aug 28, 2008 at 12:01:57PM +0800, lizhong zhu
wrote:
> hello, all of users:
> i have a problem with loading chan_dahdi.so. when i start asterisk, it
always reports the can not open channel 1 in ...
> here is my setting: in etc/system/dahdi.conf:
> # Global data
> fxsks=1
> fxsks=2
> fxoks=3
> fxoks=4
> loadzone        = us
> defaultzone     = us
> --------------------- in my chan_dahdi.conf---------------
> group=0
> signalling=fxs_ks
> context=from-internal
> channel => 1
> channel => 2
> signalling=fxo_ks
> context=demo
> channel => 3
> channel => 4
> ----------dmesg----------------
> dahdi: Registered Span 1 ('WCTDM/4') with 4 channels
> dahdi: Span ('WCTDM/4') is new master
> Freshmaker version: 71
> Freshmaker passed register test
> Module 0: Installed -- AUTO FXO (FCC mode)
> Module 1: Installed -- AUTO FXO (FCC mode)
> Module 2: Installed -- AUTO FXS/DPO
> Module 3: Installed -- AUTO FXS/DPO
> Found a Wildcard TDM: Wildcard TDM400P REV E/F (4 modules)
> ---------------------------------
> one error is that there is no transcode under /dev/dahdi, i do not why.
You don't really need it.
> [root at new-host-13 dahdi]# ls
> 1  2  3  4  channel  ctl  pseudo  timer
> [root at new-host-13 dahdi]#
> and load from asterisk:
> ============> Connected to Asterisk SVN-trunk-r140246 currently running
on new-host-13 (pid = 2664)
> Verbosity is at least 50
> new-host-13*CLI> module load chan_dahdi.so
> Unable to load module chan_dahdi.so
> Command 'module load chan_dahdi.so' failed.
>   == Parsing '/etc/asterisk/chan_dahdi.conf':   == Found
>   == Parsing '/etc/asterisk/users.conf':   == Found
> [Aug 28 11:25:57] WARNING[2797]: chan_dahdi.c:1139 dahdi_open: Unable to
specify channel 1: No such device or address
> [Aug 28 11:25:57] ERROR[2797]: chan_dahdi.c:8346 mkintf: Unable to open
channel 1: No such device or address
> here = 0, tmp->channel = 1, channel = 1
> [Aug 28 11:25:57] ERROR[2797]: chan_dahdi.c:13646 build_channels: Unable to
register channel '1'
> new-host-13*CLI>
> =========================> any one has idea for that problem? 
If this is Asterisk 1.4: Is chan_dahdi built to use dahdi or zaptel?

Compare the following two:
  strings /usr/lib/asterisk/modules/chan_dahdi.so | grep dahdi
  strings /usr/lib/asterisk/modules/chan_dahdi.so | grep zaptel

Also, what is the output of:

  cat /proc/dahdi/*
> the second question is about modprobe the modules.  is the ztcfg 
> command still workable  for DAHDI? 
No, you should use dahdi_cfg

-- 
               Tzafrir Cohen
icq#16849755              jabber:tzafrir.cohen at xorcom.com
+972-50-7952406           mailto:tzafrir.cohen at xorcom.com
http://www.xorcom.com  iax:guest at local.xorcom.com/tzafrir

On Wed, Aug 27, 2008 at 11:01 PM, lizhong zhu <zhulizhongum at
yahoo.com.cn> wrote:
> hello, all of users:
> i have a problem with loading chan_dahdi.so. when i start asterisk, it
> always reports the can not open channel 1 in ...
> here is my setting: in etc/system/dahdi.conf:
> # Global data
> fxsks=1
> fxsks=2
> fxoks=3
> fxoks=4
> loadzone        = us
> defaultzone     = us
Tzafrir answered most of this.

You will also need to modprobe one of the echo cancellers (unless you
don't need one) and have a line like:
echo_canceller=mg2,1-4

echo cancellers look like this: dahdi_echocan_mg2

if you want different echo cancellers for each line, you can do that as well:
echo_canceller=mg2,1
echo_canceller=none,2
...

Without the echo cancellers, dahdi_cfg won't configure the lines.  At
least, that's how it's been working (or not) for me in /trunk

Ciao,

David A. Bandel
-- 
Focus on the dream, not the competition.
 - Nemesis Air Racing Team motto