VoIP phones get connected to asterisk on the ethernet port so no need for FXO or FXS

moe smadi
Puddle wrote:

Thanks, that makes a lot more sense.  Would VoIP
phones still require FXO units or would that not
require any special telephony hardware?

I'm looking to get the book VoIP Telephony with
Asterisk anyone have any reviews on this?

Thanks!

-Puddle


--- "m. smadi" <[EMAIL PROTECTED]> wrote:



if you are going to use SIP phones (either software
or hardware) then you won't need FXS. You will need FXO modules to
connect you to the PSTN (i.e. to the outside world). FXS is used so
you can hook POTS phones to them the PBX (POTS meaning your regular
phone the ones you most likely have at your house and as such)


this link is an ok document explaining the different

www.patton.com/technotes/*fxs*_*fxo*.*pdf

hope this help

moe smadi
*Puddle wrote:



Hello, I'm trying to setup an Asterix PBX solution


in


our office.

We plan to have 5 active lines open available at


any


point in time.

We'd like to use VoIP Phones, and possibly Software
Based phone (*NIX/Windows enviroment).

I was researching the various cards and I think I'd
want to go with the Digium TDM40B - 4-port.

However, I can't figure the differences between FXS


&


FXO to make a decision of a purchase.

Could someone help explain this?

Ideally, we want to have one main line and have it


hit


a directory then branch to each work area with a
phone.

Thanks,

-Puddle





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