My office currently has an old PBX that is working fairly well, but we want to add in an * system for several reasons
- expansion… we are simply running out of ports
- after hours transfers
- voicemail, which our current PBX doesn’t support at all
- IP phones
however we would like to keep the existing analog phones that are set up at the desks.
I’m fairly new to phone systems, and have no idea what I need to start looking for to connect the ~25 phones into the system. I currently have a Digium TDM400P card with 3 FXO and 1 FXS module which is working well for testing, but I can’t see using more TDM400P cards as a solution for 25 phones. Are there FXS banks available at a reasonable price that are fairly simple to link into Asterisk, or would we be better to do a complete conversion to IP phones through the office, and use another TDM for the few places where analog lines are required?