[Asterisk-Users] FXS interfaces

[Mike M]

On Wed, Jun 22, 2005 at 10:41:18AM -0300, Alessandro wrote:
> 
>     Does somebody know why no load modules to FXS? I used zaptel-1.0.7
> version driver. 
> 
> [root at server1 zaptel-1.0.7]# modprobe wctdm

Here's a clue:

> ZT_CHANCONFIG failed on channel 3: Invalid argument (22)
> Did you forget that FXS interfaces are configured with FXO signalling
> and that FXO interfaces use FXS signalling?
> /lib/modules/2.4.21-27.EL/misc/wcfxs.o: post-install wcfxs failed
> /lib/modules/2.4.21-27.EL/misc/wcfxs.o: insmod wctdm failed
> You have new mail in /var/spool/mail/root

<snip>
> 
> It's TDM22B device.

It's got 4 modules.  What color are the modules in positions 1, 2, 3, 4
on the TDM400P card?  Don't be confused by the 0-3 numbering, just add
1.

> See below zaptel.conf: 

Just the relevant sections next time :).  (The lines not starting with
'#'.)

Think "opposite".  Green modules are fxs and should be handled with the
fxo signaling. Red modules are fxo and should be handled with fxs
signaling.

Note the red and green colors here:
http://www.digium.com/index.php?menu=fxsvfxo

> fxsks=1,2 
> fxoks=3,4 

For TDM22B:

fxsks=(position of red   module)(position of red   module)
fxoks=(position of green module)(position of green module)

_Don't_ plug a phone into a red module jack.  
_Don't_ plug a PSTN line into a green module jack.  

-- 
Mike