Lucent Technologies Inc.

Alcatel Lucent

Lyle Dean Kipp

Eric Jonathan Bauer

Randee Susan Adams

Kedar S Namjoshi

Daniel Weiler Eustace

Alan Eugene Frey

Om Prakash Mahajan

Gerard P O'Reilly

David Moshenberg

Katherine Ann Zine

Various exemplary embodiments relate to a method of preventing extreme coresidency hazards among application instances in a cloud network. The method includes determining a first failure group of a first instance of an application; establishing a connection with a second instance of a peer application; determining a second failure group of the second instance; comparing the first failure group to the second failure group; and establishing a second connection with a third instance of the peer application if the first failure group and the second failure group share a failure point.

Preventing extreme coresidency hazards in cloud computing

A system for the handling of calls by a packet-based telephony system by which calls invoking features not implemented on the packet-based system are handed off to an existing legacy circuit-switched telephony system for further processing. Initial address messages are forwarded to a packet network feature server, which determines whether the features invoked by the call can be provided. If not, the feature server assigns the call a trunk selection parameter according to the type of feature invoked. The trunk selection parameter is conveyed to a connection gateway, which routes the call on one of a plurality of voice trunks. The call is received by a circuit-switched switching system for further processing according to the feature invoked.

Method and apparatus for implementing feature assist on a telecommunication network

This invention relates to methods and apparatus for continuing the processing of a telecommunications call in the presence of a failure of a call processor. A backup processor is designated for each call, and a file of signaling messages for that call is maintained in that backup processor. When a failure of the call processor is detected, the file of accumulated messages for the call is processed by the backup processor in order to build up a call state for the call, but without sending call control messages for the call. Subsequent signaling messages are processed by the backup processor, including transmitting call control messages to other processors for establishing the call. In accordance with this invention, the storing of a file of backup messages is eliminated when the processors have inadequate spare processing capacity because of high traffic. Advantageously, this permits the backup procedure to be carried out under normal circumstances without reducing the processing capacity of the system. Advantageously, the backup processor only processes signaling messages when a failure is detected thus greatly reducing the processing resources required for a typical call (which, of course, does not involve a processor failure).

Telecommunications call preservation in the presence of control failure

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Naperville, IL, United States of America

Lyle Dean Kipp