Adtran NetVanta Serial Network Interface Module 1200866E1 Handsets The card can be independently

The card can be independently configured as a primary or redundant system controller

Includes ring generator

When used with the Nx56/64 Bonding Module (Part #1200262L1)

The first generation 908 can be found here

The IP230 has a small footprint taking up minimal space

Adtran NetVanta Serial Network Interface Module 1200866E1 Handsets The card can be independentlyAdtran NetVanta Serial Network Interface Module 1200866E1 Description: The Adtran 1200866E1 serial network interface module is a plug in module for Adtran Netvanta routers. The Adtran 1200866E1 provides a single serial port that can operate at speeds of up to 10 Mbps. The serial interface module is a 6 pin connection that is software selectable as either a V. 35 or X. 21 V. 11 interfaces. Adtran 1200866E1 Features: 6 Pin Smart Interface V. 35 or X. 21