

Adtran
Model# X.21/V11, Quad USSI Module
Part# 4200261L3
ATLAS option module. Provides 4 X.21/V11 complaint interfaces, each supporting Nx 56/64 kbps operation, up to 2.048 Mbps. Includes adapter cables providing DB-25 interfaces for all 4 ports.
ADTRAN list price $2,295
Like all Adtran products the X.21/V11, Quad USSI Module part # 4200261L3 carries a five year warranty.
4200261
Product information:
ADTRAN, Inc. - CPE - ATLAS