Data converter for emergency service network

Multipath traffic management

Communication failure detection device

Detection of node isolation in subtended ethernet ring topologies

PHYSICAL LAYER DEVICE AND METHOD FOR PERFORMING PHYSICAL LAYER OPERATIONS IN A COMMUNICATIONS NETWORK

Providing high availability in a software defined network

Multipath traffic management

Mobile device relay service for reliable internet of things

Method and device for triggering protection switching by signal degrade of link aggregation port

CONNECTIVITY FAULT MANAGEMENT IN A COMMUNICATION NETWORK

METHOD AND SYSTEM FOR RESTORING QOS DEGRADATIONS IN MPLS NETWORKS

Connection apparatus and connection apparatus management method

Method and apparatus for fast reroute in a connection-oriented network

Scaling OAM for Point-to-Point Trunking

Method and apparatus for fast reroute in a connection-oriented network

Methods and systems for automatically rerouting logical circuit data in a data network

HEADER CONVERSION TECHNIQUE

Switch with OAM functions

SELECTOR IN SWITCHING MATRIX, LINE REDUNDANT METHOD, AND LINE REDUNDANT SYSTEM

Method and apparatus for fast reroute in a connection-oriented network

Output queued switch with a parallel shared memory, and method of operating same

Reverse notification tree for data networks

Packet switching system and method

Link failure recovery method and apparatus

Inverse multiplexing of digital data

Relay Device And Method For Controlling The Relay Device

Layer 2/layer 3 interworking via physical loopback

Reverse notification tree for data networks

COMMUNICATION SYSTEM, COMMUNICATION DEVICE, AND METHOD FOR CONTROLLING TRANSPORT RESOURCE THEREOF

Line redundant device and method

Method and system for controlling a back-up network adapter in a local collection facility from a remote facility

Scaling OAM for point-to-point trunking

Method and apparatus for fast reroute in a connection-oriented network

ATM Protection System

Network Resource Management Device

EQUIVALENT SWITCHING METHOD FOR TRANSMISSION DEVICES IN MPLS NETWORKS

Output queued switch with a parallel shared memory, and method of operating same

Failure protection in a provider backbone bridge network using selective redirection

Process for detecting the availability of redundant communication system components

METHOD AND APPARATUS FOR PROVIDING TROUBLE ISOLATION FOR A PERMANENT VIRTUAL CIRCUIT

Switch fabric access scheduler

Generation and use of CRC in communications network

Generation and use of CRC in communications network

Apparatus and Method For Dualizing an Asynchronous Transfer Mode (Atm) Router in a Cdma2000 System

FAULT TOLERANT ATM-BASED DISTRIBUTED VIRTUAL TANDEM SWITCHING SYSTEM AND METHOD

Method and apparatus for rendering a cell-based switch useful for frame based application protocols

Communication connection control systems and methods

Method and system for communication using a partial designated transit list

Method for controlling the forwarding quality in a data network

Communications system having enhanced fault tolerance

Secure ATM-based distributed virtual tandem switching system and method

Diverse routing for switched connections

Packet switching system and method

Multiple endpoint protection using SPVCs

Method and apparatus for rendering a cell-based switch useful for frame based protocols

System comprising an aggregation sub-system and tributary sub-systems

Network fabric access device with multiple system side interfaces

Method and system for providing automated fault isolation in a managed services network

Access line termination system, access line termination device and transmission control method

Method and system of evaluating survivability of ATM switches over SONET networks

Method and apparatus for protection switching in virtual private networks

System and method for transmission of operations, administration, and maintenance packets between ATM and switching networks upon failures

Method for assisting equivalent circuits in mpls networks

Network re-routing systems and methods

Method for operating a network having a ring topology

Switching apparatus for supporting protection switch-over mode of SONET/SDH network and method thereof

SoftRouter protocol failovers

Architecture for a hybrid STM/ATM add-drop multiplexer

Architecture for a hybrid STM/ATM add-drop multiplexer

Method for fast switchover and recovery of a media gateway

Optical transmission switching device

Header conversion technique

Reducing overhead when using loopback cells for fault detection in bi-directional virtual circuits

ATM data transmission systems

Switching device interfaces

Active/standby switching system

Inverse multiplexing of digital data

Communication network connection rerouting methods and systems

Electronic device protection systems and methods

Method and apparatus for pre-provisioning networks to support fast restoration with minimum overbuild

Method and system for fail-safe renaming of logical circuit identifiers for rerouted logical circuits in a data network

ATM switch with OAM functions

Method and system for automatically rerouting logical circuit data in a data network

Method and apparatus for improving asynchronous transfer mode operation over noisy, high speed wireless links

Layer 2/layer 3 interworking via physical loopback

Programmable controller and duplexed network system

System and method for a communication network

Router switch fabric protection using forward error correction

System and method for providing communications in a network using a redundant switching architecture

Providing protection switching via failure prediction

Method and apparatus for rendering a cell-based switch useful for frame based protocols

Method and system for providing broadcast channels over an emulated subnetwork

Automatic configuration updating to stabilize ports in a telecommunication system

Replication in assured messaging system

Load balancing and content preservation