[asterisk-users] FXS channel bank

[Jerry Jones]

On Jun 28, 2007, at 8:00 AM, pixiesfr wrote:

> hello,
>
> We looking for a channel bank to connect 120 analogs phones, in SIP to
> an Asterisk ..
>
> Did someone have some product in mind.

A channel bank must connect via a T1 by definition, which would then  
give you 24 phone lines per T1. This would require 5 T1 connected to  
your asterisk server. OK 4 if E1 as it probably is in your case.

However with your requirement for SIP you are looking for a gateway  
to connect your phones. Most are 24 port, though some are 48 port.  
Names to look at would be Carrier Access, Audiocodes, Vega etc.

I do like the Vega unit except for their support - or lack thereof -  
here in the US. They do have both 24 and 48 port units.

Your other option would be to do GR303 which would allow you to hang  
many lines off a few T1/E1 circuits, except it is definately not SIP.  
If phones are not at location of your asterisk server and you really  
want to do sip, it may be simpler for this many phones to install an  
additional asterisk server at the remote location and install a quad  
port T1/E1 card and hang channel banks off it.

Good Luck