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PRI switching applications and frame relay passthrough are supported with the 1200185L3
The Adtran 1200755L2 provides four T1 or PRI interfaces to an Adtran Atlas 550
Included with each pair of Adtran Tracers:
An additional 4 1000-Base-SX SFP fiber ports are included
Adtran 1203860G1 Features:
Adtran Atlas 800 Series 32-Channel Voice Compression Module 1200221L4 Multiplexers PRI switching applications and frameAtlas 800 Series 32 Channel Voice Compression Module 1200221L4 Description: The Adtran 1200221L4 is a 32 channel voice compression module for Atlas 800 series gateways. The 1200221L4 supports G. 723. 1 compression on 32 B channels from multiple T1 or PRI circuits. With 6: 1 compression ratio compared to traditional G. 711 conversations, the 1200221L4 can support up to an extra 160 calls across the 8 channels (192 total). The 1200221L4 supports fax
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