I have ATT t3 with “voip card” in the router to provide analog tone to my old pbx. I assume this voip card is an fxo?
I would like to continue this same line set up for now but to get rid of the old pbx and use voip end points instead of pbx phones.
I know I will need a FXO card in the asterisk server. My question is that since I already have voip card in the t3 router is there a problem pluging those into an fxo card in the asterisk server?
At some point in the future I will do away with the voip to analog setup on the router and go full voip all the way, but I’d like to have the internal infrastructure up and running before doing that. Too big of a job for one man to do all at once.