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The Adtran 1200754L1 is an Atlas 550 Dual RS-449/V
Adtran Atlas 550 Dual T1 PRI Module 1200314E2 Description:
or intercom keys added to the phone
The Comdial DX-80 KSU 7201-00 sold by Refurbished Phone Exchange is configured in 4x8x4 mode
8 Combo Ports
Adtran Atlas 550 Quad T1/PRI Module 1200755L2 Switches The Adtran 1200754L1 is anAdtran Atlas 550 Quad T1 PRI Module 1200755L2 Description: The Adtran 1200755L2 provides four T1 or PRI interfaces to an Adtran Atlas 550. Each port can be configured to work as a T1 or PRI. The 1200755L2 offers support for Drop Insert and 1 0 digital access cross connect systems (DACS) applications. The quad T1 PRI module supports PRI switching and frame relay emulation. Adtran 1200755L2 Features: Can be used in any user interface module slot
