| Patent Number |
Title Of Patent |
Date Issued |
| 6813240 |
Method of identifying low quality links in a telecommunications network |
November 2, 2004 |
| In a telecommunications network provisioned with a path based distributed restoration algorithm, upon the detection of a failure in a link, each of the custodial nodes of the failed link sends a special message to the respective end nodes. These end nodes communicate with each other over |
| 6456589 |
Method of coordinating the respective operations of different restoration processes |
September 24, 2002 |
| In a telecommunications network provisioned with different types of restoration processes, to ensure that the operation of one restoration process does not infringe upon other nodes that are actively executing a different restoration process, a request is sent by one of the restoration |
| 6418117 |
Out of band messaging in a DRA network |
July 9, 2002 |
| To ensure the integrity of a telecommunications network provisioned with a distributed restoration algorithm (DRA), a communications network is provided for routing signaling messages such as DRA restoration and maintenance messages among the various nodes of the network. Thus, while |
| 6414940 |
Method and system of managing unidirectional failures in a distributed restoration network |
July 2, 2002 |
| In a distributed restoration environment, a node, upon detecting an alarm indicating a failure, after a predetermined period of time, converts the received alarm signal into a modified alarm signal and transmits the thus converted signal to the node adjacent thereto that should have rece |
| 6404733 |
Method of exercising a distributed restoration process in an operational telecommunications netw |
June 11, 2002 |
| In a telecommunications network provisioned with a distributed restoration scheme, to determine the reactions and responses of the network while the network is "live" or operational, an exercise information message is provided to the network for presenting a simulated failure or failures |
| 6044064 |
Method and system therefor of confining path verification signals within a distributed restorati |
March 28, 2000 |
| In a restoration network including a distributed restoration algorithm (DRA) enabled network of a telecommunications network, path verification messages are embedded onto traffic bearing signals entering the network and removed from the signals leaving the network. By adding path ver |
| 5748611 |
System and method for restoring a telecommunications network using conservative bandwidth reserv |
May 5, 1998 |
| A system and method for restoration of a disrupted telecommunications path between a source node and a destination node via at least one tandem node. The operation of the present invention proceeds in five phases: notification, broadcast, path trace-out, confirmation and cleanup. In the |
| 5646936 |
Knowledge based path set up and spare capacity assignment for distributed network restoration |
July 8, 1997 |
| In a telecommunications network having a plurality of intelligent nodes interconnected by multiple communication channels, alternate paths and spare channels are set up for restoring traffic disrupted by failure to one or more of the communications channels. The alternate paths may be se |
| 5636203 |
Method and system for identifying fault locations in a communications network |
June 3, 1997 |
| All nodes on a malfunctioned communications circuit of a communications network are enabled to identify the location of the fault causing the circuit malfunction. Upon detecting an incoming signal impairment on the circuit, each node on the circuit first assumes that the failure is on th |
| 4881261 |
Method for predictive pacing of calls in a calling system |
November 14, 1989 |
| A system having calls substantially selected and dialed to customers at such a paced rate that the system will keep a group of agents at full occupancy with calls on which the system has detected voice answer. As the size of the agent group changes, this predictive pacing is adjusted so |
