I am currently setting up my first asterisk system for our new offices.
I have got a test machine up and running and can make and receive calls to different extensions via it.
The next step i need to under take is to start hooking it up to our analog lines as this is where I am getting a little confused.
To start off with we are going to have 4 analog lines, my aim is to use these to both receive calls and call out over.
Do I just require a 4 port FXS card or would I need a combination of FXO and FXS modules on the same card ?
Thanks for any help !!
I just managed to download the Asterisk the future of Telephony PDF and have found the answer I was looking for:
I will require a 4 port FXS to make and receive calls, the FXO module is for hooking up an analog phone or fax machine to the Asterisk server.
If I’m not mistaken, you need FXO ports.
The phone company provides an FXS. Your end has to be the opposite. A analog phone is an FXO.
Phone Company (FXS) —> into your asterisk box (FXO)
if you wanted to use analog phones with your asterisk box you need FXS.
out from your asterisk box (FXS) —> analog phone (FXO)