Adtran Atlas 550 Quad ISDN BRI U Module 1200315L1 Modules The Adtran 1200338L1 is a

The Adtran 1200338L1 is a module for Atlas 800 series devices that adds support for eight FXS interfaces to an Atlas 800

The IP 5212 features a 2 line backlit display that includes contrast control and auto-dimming standard

or whatever you have programmed

and line appearances

This integrated access device (IAD) takes T1 signals and converts them over to PRI signals

Adtran Atlas 550 Quad ISDN BRI U Module 1200315L1 Modules The Adtran 1200338L1 is aAdtran Atlas 550 Quad ISDN BRI U Module 1200315L1 Description: The Adtran 1200315L1 provides 4 ISDN U Interfaces for User Termination applications. The Quad ISDN BRI U module supports AT&T 5ESS, Nortel DMS 100, and National ISDN 1. The Adtran 1200315L1 is compatible with Atlas 550 gateways. Adtran 1200315L1 Features: Provides four BRI S T interfaces Supports: AT&T 5ESS Nortel DMS 100 National ISDN 1 Can only be used in a user interface module slot.