We’re about to launch a small business and are looking to set up two new lines for the business, but we already have a Nortel PBX with 6 lines in place. My employer is looking to have a VoIP line AND a POTS line connecting to the same phone (he’s concerned about the consistency and reliability of a VoIP line and wants the POTS system in place in case of failures on the VoIP side). Does anyone know how this could be accomplished? We’re considering both building a system and purchasing a turnkey solution, so all ideas are welcomed.
- Install Asterisk with an FXO interface (see the Digium website) and Internet connection
- Configure DAHDI for the FXO interface and sip for the VOIP lines.
- Connect internal phones either by the local network (sip) or FXS interfaces on the Asterisk box.
- Write a dialplan so you can choose which line you want to use.