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1:1 DS3 and DS1 Redundancy
The 1204288L2 is a redundant controller card that can fit in either slot 1 or 2 of the multiplexer
(24) 10/100 Base-T Ports (Ethernet)
Atlas 500 Chassis (1200550L2)
ShoreTel Handset Cord Features:
Adtran Atlas 800 Series 24-Channel Voice Compression Module 1200221L3 Routers 1:1 DS3 and DS1 RedundancyAtlas 800 Series 24 Channel Voice Compression Module 1200221L3 Description: The Adtran 1200221L3 is a 24 channel voice compression module for Atlas 800 series gateways. The 1200221L3 supports G. 723. 1 compression on 24 B channels from a T1 or multiple PRI circuits. With 6: 1 compression ratio compared to traditional G. 711 conversations, the 1200221L3 can support up to an extra 120 calls across the 8 channels (144 total). The 1200221L3 supports fax
