Adtran Gmbh

Jones E Allison, Iii

Jason Ryan Amos

Coleman D Bagwell

James Alexander Mabry

Daniel Weatherford

A communications session call is established between first and second call devices. A SIP Reinvite command is sent to the second call device without any SDP media parameters to gain new and current media parameters. The second call device acknowledges the Reinvite command as corresponding to the first SDP offer with new and current media parameters. A third call device is sent a SIP Reinvite command as a second SDP offer using new and current media parameters. The third call device acknowledges the SIP Reinvite command as corresponding to the first SDP answer to the first SDP offer. The second call device acknowledges as a second SDP answer to the second SDP offer. The call with the first call device is terminated to change the destination of the call and maintaining any media stream between the second and third call devices.

Communications system and related method for routing calls to a different destination

A system and method routes a call within a communications network. A call routing device is interconnected to a plurality of trunks forming trunk groups and receives a call. A database stores a dialing plan having data related to restrictions as to which outbound trunk from the call routing device can be used based on an originating account as either a station or trunk of a caller or the number of a caller. A call router processor determines an outbound trunk from the call routing device to which a call from a caller is routed at the call routing device if the configured dial plan permits the originating account or number of the caller to access the selected outbound trunk. A call router routes the call from the caller onto the selected outbound trunk.

System and method for call routing based on source of call

A server connectivity status testing mechanism of a voice-over internet protocol (IP) communication device is operative to automatically test the connectivity status of each of a plurality of available servers. In response to such testing, server usage is selectively adjusted, as necessary, to ensure that the user is provided with effectively uninterrupted service, and so that the service provider may be immediately alerted to error conditions.

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Madison, AL, United States of America

Jones E Allison, Iii