Device for duplicating connectionless server

Device for selecting normal circuit in communication system

Device for switching over double module

Devices, softwares and methods for redundantly encoding a...

Dial plan transparency for fragmented networks

Different system transfer method for a ring transmission system

Digital crossconnect system for selecting alternate communicatio

Digital signal transmission apparatus

Digital television transmitter/receiver and method of...

Directed cost protocol

Disaster recovery in a telecommunications network

Disaster recovery via alternative terminals and partitioned...

Distinguishing between link and node failure to facilitate...

Distributed and disjoint forwarding and routing system and...

Distributed control methodology and mechanism for implementing a

Distributed control packet transmission

Distributed digital cross-connect system and method

Distributed digital cross-connect system and method

Distributed fault management architecture

Distributed packet group identification for network testing