Method and system for extending IP PBX services to cellular wireless communication devices
First Claim
1. A method comprising:
- receiving into a cellular radio access network (RAN) a call request seeking to set up a call for a cellular wireless communication device (WCD) that is operating in a wireless coverage area of the RAN;
responsively (a) engaging in first call setup signaling between the cellular RAN and a media gateway system to set up a first leg of the call between the cellular RAN and the media gateway system, (b) identifying an IP PBX system that serves the cellular WCD, and (c) engaging in second call setup signaling between the media gateway system and the IP PBX system to set up a second leg of the call between the media gateway system and the IP PBX system; and
setting up the call from the IP PBX system for the cellular WCD.
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Accused Products
Abstract
An IP PBX system that serves enterprise telephones via a landline IP network connection is be expanded to serve cellular wireless communication devices (WCD) via a cellular wireless carrier'"'"'s radio access network (RAN). Calls to and from the cellular WCD are connected through the cellular carrier'"'"'s RAN and the IP PBX system, so that the IP PBX system can control and manage the calls just as the IP PBX would control and manage calls involving other extensions on the IP PBX. A cellular WCD thereby becomes an IP PBX client station, i.e., an extension on the IP PBX system. As such, the cellular WCD can seamlessly benefit from many of the same IP PBX features that other more conventional IP PBX client stations (e.g., desk phones) enjoy.
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Citations
39 Claims
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1. A method comprising:
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receiving into a cellular radio access network (RAN) a call request seeking to set up a call for a cellular wireless communication device (WCD) that is operating in a wireless coverage area of the RAN;
responsively (a) engaging in first call setup signaling between the cellular RAN and a media gateway system to set up a first leg of the call between the cellular RAN and the media gateway system, (b) identifying an IP PBX system that serves the cellular WCD, and (c) engaging in second call setup signaling between the media gateway system and the IP PBX system to set up a second leg of the call between the media gateway system and the IP PBX system; and
setting up the call from the IP PBX system for the cellular WCD. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A method comprising:
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maintaining in an IP PBX system a set of data that correlates a first extension on the IP PBX system with a directory number of a cellular wireless communication device (WCD) and further with a second extension on the IP PBX system; and
receiving into the IP PBX system a call setup message seeking to set up a call to the first extension, and responsively (a) engaging in first call setup signaling to set up the call from the IP PBX system to the directory number of the cellular WCD and (b) engaging in second call setup signaling to set up the call from the IP PBX system to the second extension on the IP PBX system. - View Dependent Claims (27, 28, 29, 30, 31)
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32. A system comprising:
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a cellular radio access network (RAN) comprising (i) a base station that radiates to produce a wireless coverage area and (ii) a mobile switching center that provides connectivity between the base station and the public switched telephone network;
a media gateway system comprising (i) a media gateway arranged to engage in bearer communication with the mobile switching and (ii) a media gateway controller arranged to engage in signaling communication with the mobile switching center and with the media gateway;
an IP PBX system arranged to serve a plurality of enterprise telephone stations that are situated on an enterprise packet-switched network, the IP PBX system being further arranged to engage in signaling communication with the media gateway controller and bearer communication with the media gateway;
wherein, when the cellular RAN receives a request seeking to set up a call for a cellular wireless communication device (WCD) that is operating in the wireless coverage area, the cellular RAN engages in first call setup signaling with the media gateway controller to set up a first leg of the call between the cellular RAN and the media gateway;
wherein, the media gateway controller determines that the IP PBX system serves the cellular WCD, and the media gateway controller responsively engages in second call setup signaling with the IP PBX system to set up a second leg of the call between the media gateway and the IP PBX system; and
wherein the IP PBX system sets up the call for the cellular WCD. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39)
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Specification