[Asterisk-Users] asterisk hardware selection question

[creslin at digium.com]

On Thu, Jun 17, 2004 at 05:02:26PM -0500, Erick Perez wrote:
> 10 analog extension using conventional phones (lets say Panasonic kx-ts3
> analog)
> 4 analog lines coming from our telco
> 
> So i will need 3 TDM40B (total 12 FXS and none FXO so i can have 2 extra FXS
> ports for future)
> and one TDM04B Quad FXO.
> 
> Right?

Ideally, you probably don't want to have more than 2 (and at the max 3)
of the TDM cards in your system.  Each of the TDM cards should have it's
own interrupt in your system.  With (on most PCI buses) only 4
interrupts available to the PCI bus, it's extremely difficult to get 4
cards working well on a single system.

> 
> and what is the Asterisk support for Digital phones?
> 

SIP, H.323, MGCP, and (of course) IAX :-) (you can find more info about
all this on the various websites http://www.asterisk.org,
http://www.voip-info.org/).

I prefer SIP or IAX :-).  The rest are a little bit more interesting to
set up.

Matthew Fredrickson