[asterisk-users] Clocking Multiple T1 Cards

[Andrew Kohlsmith]

On Monday 24 July 2006 11:20, Shaw Terwilliger wrote:
> I have a Digium TE205P connected to two channel banks in my Asterisk.
> PBX.  I will be installing a Sangoma A101 to be connected to a PSTN PRI
> in the same box.  How should I go about configuring the T1 timing for
> these spans?  Right now my zapata.conf contains span definitions like
> the following:
>
> span=1,0,0,esf,b8zs
> span=2,0,0,esf,b8zs
>
> If I understand the timing comments correctly, using 0 for both spans
> causes Asterisk to supply the timing for them, which I can't do with a
> PSTN PRI (right?).

Correct.  Since you're using an entirely different card for the incoming PRI, 
you don't need to change these spans.  Just add the third, and use '1' for 
timing to specify that you want the clock recovered from that span to be the 
primary clock source.  As the other spans are on a different card, it won't 
make a whit of difference to them.  :-)

> Should I anticipate any problems with this kind of configuration?  Will
> I have to configure the Sangoma card in a special way, or reconfigure
> the Digium card?


Nope, should all just work.

-A.