Adtran Atlas 550 Dual 449/V.36 USSI Module 1200754L1 Accessories New ShoreTel 230 phones are

New ShoreTel 230 phones are shipped in original factory packaging

One DC power supply is inserted into this multiplexer

four 1Gbps SFP/1000Base-SX ports can be used for high-speed up-link or stacking

Each Atlas 550 Inverse Multiplexer (4200305L4) Includes:

Option slots can only be used in point-to-point applications

Adtran Atlas 550 Dual 449/V.36 USSI Module 1200754L1 Accessories New ShoreTel 230 phones areAdtran Atlas 550 Dual 449 V. 36 USSI Module 4200754L1 Description: The Adtran 1200754L1 is an Atlas 550 Dual RS 449 V. 36 Universal Synchronous Serial Interface (USSI) Module that combines with other Atlas components to provide solutions for a variety of wide area networking applications. The module provides two RS 449 V. 36 synchronous serial ports. Each of these ports is capable of operating at up to 2. 048 Mbps. The USSI module is compatible with