QB3 System Server

QB3 server may be equipped with Analog Telephone Line and Analog Extension Ports by adding Expansion Modules.  Available modules include:

2-Port Analog Telephone Line Module (FXO) – item # QBO2,   
2- Port Analog Extension Module (FXS), item # QBS2, 
2 -Port Combo Module with (1) FXO Port & (1) FXS Port, item # QBSO.

NOTE: The QBXP8 module is required prior to adding other expansion modules.