DDS/ISDN


Our portfolio of field-proven DSU and ISDN solutions offers technologically advanced data transport in an economically priced package, with network management and disaster recovery. ADTRAN’s DSU and ISU Series include cost-effective DDS 56/64 kbps DSUs, ISDN Service Units (ISUs), NT1s, and Inverse Multiplexers to extend and terminate DDS and ISDN Basic Rate Interface services for videoconferencing, disaster recovery, and high-speed file transfer.
Provides a central site rackmount solution for terminating multiple T1, ISDN, or DDS circuits