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| Radio communication booster for portable radio transceivers |
| What is claimed is: 1. A radio apparatus for a mobile radio, comprising an antenna output ... |
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| Paging system for washers and dryers |
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| Method for executing automatic calling function in a cordless telephone system |
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| Image trap filter |
| OF THE INVENTION Referring now to the drawing, in which like reference numbers refer to like ... |
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| Wireless system for alerting individual to incoming telephone call |
| The goal of the invention disclosed here is to provide a means for indicating an incoming telephone ... |
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| Telephone communication system |
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| Restricted access telephones for logical telephone networks |
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Wireless centrex call screen
| Details |
Inventors: Chow, Albert; Kim, Jinman; Walker, Hopeton; Wang, Spencer; Ying, Wenchu;
Assignee: AT&T Corp. (New York, NY)
Primary Examiner: Bost; Dwayne
Assistant Examiner: Trinh; Sonny
Attorney, Agent or Firm:
The instant invention discloses a method and system for providing a novel wireless centrex service that untethers subscribers from the immobility associated with traditional desktop telephones. Essentially, the present invention extends the benefits of wireless voice and data services to subscribers having a need to move within a plurality of localities such as business and hospital campuses. In accordance with the invention, a wireless telephone subscriber can use a standard cellular/PCS telephone as a wireless extension of their desktop phone, while in the proximity of a miniature radio base station capable of communicating with the PCS/cellular telephone. The advantage of such a system is that a subscriber can use the same cellular/PCS telephone that provides service in the public network in the wireless centrex environment. Additionally, the wireless centrex system provides services and features which are similar to those offered to regular centrex telephone subscribers. Exemplary features include, caller ID, call waiting, call hold, call transfer, call forwarding and voice messaging. |
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DETAILED DESCRIPTION The instant invention addresses this need for an untethered communication systems created by the paradigm shift towards a more flexible and decentralized working environment.
The material described in the instant invention discloses a wireless communication platform that provides a solution to the challenge of mobility management by merging and expanding the capabilities of wired and wireless networks.
Thus, the present invention includes systems and methods to provide a wireless communication service that has expanded the features/functions available in wireline and cellular telephone systems and the relative cost of the wireline system using a mobile telephone system and service that is added to existing wireline telephone systems equipment, to offer cost effective wireless communications for the working environment.
The instant invention includes a wireless centrex system (WCS) that allows a subscriber to use the same standard cellular/PCS telephone in both the wireless centrex system domain as well as the public cellular system domain.
In the WCS domain, subscribers can use their cellular/PCS as a cordless-like phone without incurring air-time charges.
The WCS has the advantage of providing a working environment mobile telephone system having traditional centrex and PBX type services such as call waiting, call hold, call forwarding, caller ID, three party conference calling, and call messaging.
The WCS also includes additional enhanced features like message services used for paging, call screening, call waiting, distinctive ringing, user proactive call handling, automatic callback, call return and speed calling.
In general, the present invention is directed towards a method and system for extending the benefits of wireless voice and data systems to a wireless centrex system.
The method and system as described in the instant invention, provides flexible software driven support for future generation air interfaces, as well as support for current legacy second generation air interfaces
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