Rockstar Bidco, LP

Nortel Networks Corporation

Apple Inc.

Rockstar Consortium US LP

Ribbon Communications Operating Company, Inc.

Genbrand US LLC

Microsoft Technology Licensing, LLC

Microsoft Corporation

Brian Stucker

Olga Wagner

William D Gentry

David P Ress

Rajesh Ramanathan

An administrative interface is provided between a first network and a second network, where the administrative interface is separate from one or more communications session signaling interfaces between the first network and second network. At least one of authorization, authentication, and accounting messages is communicated over the administrative interface. A module associated with the administrative interface is provided to perform topology hiding of the first network such that topology information of the first network is hidden from the second network.

Topology hiding of a network for an administrative interface between networks

An origination terminal initiates a call by providing a third party call control message in association with a traffic channel request. While the traffic channel is being established, the service node may initiate third party call control to initiate a call leg to the destination terminal on behalf of the origination terminal. As such, the destination call leg is initiated earlier. Since the destination call leg is initiated earlier, a corresponding ringback message indicating that a call is being presented to the called party is provided to the origination terminal sooner. When the ringback message is received quickly, a corresponding ringback indication may be presented to the caller in less time than was previously possible. The process is made even more efficient by waiting until the ringback message is received from the destination terminal before providing the SDP information, or communication information, for the origination terminal to the destination terminal.

Expedited call setup

The present invention provides a technique for providing a forced hold service such as is used for an emergency services call, which is supported at least in part over a packet network. The forced hold service acts to effectively hold a connection for the call with a called party, even when the caller takes an action that would normally end a call, such as going on hook, pressing end, or the like. When the caller takes an action that would normally end the call, the forced hold service allows the caller to automatically reconnect to the emergency services provider over the held connection upon going offhook, pressing send, or the like. Alternatively, the emergency services provider can effectively re-engage the call wherein the caller is reconnected over the held connection upon going offhook, pressing send, or the like.

Forced hold call handling in a VoP environment

If a communication client disconnects from a call, an interworking service node may receive from the communication client a disconnect message indicative of an attempt to disconnect the call and send a forced hold message to place the call on forced hold in response to receiving the disconnect message. A portion of the call extending toward a public service access point and through the PSTN is placed on hold. When an operator wants to reestablish the call to the communication client, the interworking service node will receive over the PSTN a reconnect request message to reestablish the call with the communication client. The reconnect request message may be an integrated services user part message. In response to the reconnect message, the interworking service node will generate and send a session initiation message, which is configured to reestablish the call toward the communication client.

Message mapping for forced hold call handling in a VoP environment

Disclosed is one embodiment of a system and method for negotiating a compression technique while signaling is occurring in a communications network, the method comprising sending a message with a compression negotiation indicator, receiving a response to the message, determining if the response contains an error code in response to the compression header, if the message contains an error code, then continuing signaling without using compression techniques. On the other hand, if the message does not contain an error code, then the method negotiates a compression technique and may continue signaling with the negotiated compression technique.

Growing community of inventors

Sachse, TX, United States of America

Brian Stucker