Samsung Prostar DCS Expansion Module EXPN-A1 Modules XDP Port (Two phones share

XDP Port (Two phones share same wire via RJ-11 Jack)

MWI (message waiting indicator light)

New Designation Paper

3 navigation keys

Adtran Atlas 800 Series Dual RS-449 Video Module 4200773L3 Description:

Samsung Prostar DCS Expansion Module EXPN-A1 Modules XDP Port (Two phones shareSamsung Prostar DCS Expansion Module EXPN A1 Description: The Samsung EXPN A1 is an expansion module for Prostar DCS phone systems. The module provides connection ports to connect expansion cabinets to your main system. An EXPN B1 and link cable are also required to join the two cabinets together. Samsung EXPN A1 Features: Connects Main Cabinet to Expansion Plugs in Prostar DCS Main Cabinet