Adtran Atlas 550 T1/PRI Module 1200307L1 Handsets a public and private frame

a public and private frame relay

the ShoreTel 560 can handle intensive use by professionals

2 FXS Ports

This D&I T3 module offers a primary BNC interface for connecting a channelized T3 connection while the secondary BNC connector is for Drop / Insert connections to another channelized T3 device

complete with the ability to display graphics

Adtran Atlas 550 T1/PRI Module 1200307L1 Handsets a public and private frameAdtran Atlas 550 T1 PRI Module 1200307L1 Description: The Adtran Atlas 550 T1 PRI network module provides the Atlas 550 with a single T1, PRI, or DSX 1 interface to your integrated Access Device. The 1200307L1 plugs into the network interface module slot. Adtran 1200307L1 Features: Provides Channelized 23D+1B Connection Provides a single T1, PRI, or DSX 1 interface. Can only be used in the network interface module slot.