The QB1 Server supports up to 20 IP Phones & 10 VoIP Lines with out the addition of hardware or software. With additional hardware modules, the QB1 may be equipped with Analog Telephone Line and Extension Ports. Available modules include:
- 2-Port Analog Telephone Line Module (FXO) – item # QBO2
- 2- Port Analog Extension Module (FXS), item # QBS2
- Combo Module with (1) FXO Port & (1) FXS Port, item # QBSO
Up to 2 modules maybe added to the QB1 Server.