[asterisk-users] Fw: Remove a TDM Card

[Tony Plack]

> Hi, sorry for my insistence but this is a big problem for me..my
> steps for remove card are ok ? Thanks.
>
> ------
>
> Salvatore.
>
> ----- Original Message -----
> From: "Sasa" <sasa at shoponweb.it>
> To: <asterisk-users at lists.digium.com>
> Sent: Monday, November 26, 2007 4:25 PM
> Subject: [asterisk-users] Remove a TDM Card
>
>
>> Hi, I would like remove a Digium TDM2400P from Asterisk (version
>> 1.2.13) box
>> but when I remove card from the PC after reboot Asterisk not
>> started correctly. On box now with TDM Card I have:
>>
>> root at voip:~# lsmod
>> Module                  Size                     Used by zaphfc
>>               16796                    6 wctdm24xxp        63552
>>                   5
>> zaptel                   192132                 26
>> zaphfc,wctdm24xxp
>>
>> The kernel version is:
>> 2.6.19.2
>>
>> ..then I have in /etc/rc.d/rc.modules:
>> rc.modules
>> rc.modules-2.4.33.3
>>
>> ..both files are identical:
>>
>> #!/bin/sh
>> /sbin/modprobe zaptel
>> /sbin/modprobe zaphfc modes=3 && /sbin/ztcfg -vvvvvv
>> /sbin/modprobe wctdm24xxp && /sbin/ztcfg -vvvvvv
>>
>> ..in zapata.conf I have:
>>
>> signalling=fxs_ls
>> group = 3
>> channel => 1-5
>>
>> ..and in zaptel.conf I have:
>> fxsls=1-24
>>
>> ..now my dobious is about correct steps for remove TDM Card from
>> PC, I think that:
>>
>> - remove line configuration in zapata.conf and zaptel.conf -
>> remove in  rc.modules and rc.modules-2.4.33.3 line:
>> /sbin/modprobe wctdm24xxp && /sbin/ztcfg -vvvvvv - rmmod
>> wctdm24xxp - reboot
>>
>> ..this procedure is ok ?
>> Thanks.
>>
>> ------
>>
>> Salvatore.
>>

1.2.13 has some exploits and you should consider running something newer.  1.2 branch has no official support.

However...

You should make sure to load ztdummy in place of your tdm card.  If I remember correctly 1.2 requires a timing source.
modules-2.4.33.3 is for an old kernel and shouldn't apply to the current 2.6.19.2.

Normally the TDM card provides this 1000Hz timing source when available, but ztdummy can mimic this timing from the kernel clock source.

ztdummy may (or may not) have issues with your kernel version as a timing source.  I believe kernel 2.6.21 or better solved a few problems with clock sources.

Other than that, your steps are fine.