Adtran Atlas 800 Series Quad USSI X.21/V11 Module 4200261L3 Accessories These Shoretel Handsets are refurbished

These Shoretel Handsets are refurbished replacements for your Shoretel phones that provide crystal clear quality calls

Supports up to 44

The following parts are included with the Adtran 4205290L5 Bundle:

These modules include T1

Adtran Atlas 800 Series Quad USSI X.21/V11 Module 4200261L3 Accessories These Shoretel Handsets are refurbishedAtlas 800 Series Quad USSI Module, X. 21 V. 11 4200261L3 Description: The Adtran 4200261L3 provides four X. 21 universal synchronous serial interface (USSI) connections for an Atlas 800 series gateway. The module supports Nx56 64 Kbps operation for up to 2. 048 Mbps operation across each of the 4 ports. The Adtran 4200261L3 can support both frame relay emulation and passthrough in an Atlas 830 or 890. Adtran 4200261L3 Features: Provides four X. 21 V.