Adtran Atlas 550 32 Channel ADPCM Module 1200752L1 Power Supply Includes four T1 ports and

Includes four T1 ports and one HSSI

Full Duplexe Speakerphone

7248 Standard 4 CO Line x 8 Digital Extension Module

Full or Fractional

21/V11 Universal Synchronous Serial Interface (USSI) Module (4200754L3) combines with other Atlas 550 components to provide solutions for a variety of wide area networking applications

Adtran Atlas 550 32 Channel ADPCM Module 1200752L1 Power Supply Includes four T1 ports andAdtran Atlas 550 32 Channel ADPCM Module 1200752L1 Features: The Adtran Atlas 1200752L1 is a 32 channel voice channel compressor card. The 1200752L1 can compress and utilize the G. 726 voice CODEC for 16Kb and 32Kb conversations, allowing two to four times as many calls on each DS0 channel as standard. The ADPCM module still allows for raw G. 711 voice CODECs for Fax and other necessary implementations. The module is compatible only with Adtran Atlas