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Supports loop start
There are multiple ways to connect your phone system to outside lines including analog
an integrated VPN client
We recommend users switch to the 3Com 3102B (3C10402B) if they have a newer version of software
Adtran Atlas 550 Quad T1/PRI Module 1200755L2 Handsets Supports loop startAdtran 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
