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Call instance representation of a call for call management in a wireless telecommunications system
| Details |
Inventors: Cooper, Guy A.; Meakes, Gavin J.; Lamkin, Richard M.;
Assignee: Alcatel USA Sourcing, Inc. (Plano, TX)
Primary Examiner: Hunter; Daniel S.
Assistant Examiner: Nguyen; Thuan T.
Attorney, Agent or Firm: Baker Botts L.L.P.
The present invention provides a central terminal (10), and method of operation of such a central terminal (10), for managing calls between a telephone exchange (500) connectable to the central terminal (10) and a plurality of subscriber terminals (520), the central terminal being arranged to communicate with the subscriber terminals (520) via wireless links (515). According to the invention, the central terminal (10) comprises a call manager (560) for receiving a call from the telephone exchange (500) or from subscriber terminals (520), and for generating a call instance to represent said call, the call instance having a plurality of attribute fields to store attributes defining the call, at least one attribute being provided by the call. Further, the central terminal (10) comprises a storage unit arranged to store a matrix of interrelated data elements, accessible by the call instance, for enabling other attributes of the call to be determined from said at least one attribute provided by the call, the call instance being arranged to store these other attributes within the appropriate attribute fields of the call instance. |
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DETAILED DESCRIPTION Viewed from a first aspect, the present invention provides a central terminal for managing calls between a telephone exchange connectable to the central terminal and a plurality of subscriber terminals, the central terminal being arranged to communicate with the subscriber terminals via wireless links, and the central terminal comprising: a call manager for receiving a call from the telephone exchange or from subscriber terminals, and for generating a call instance to represent said call, the call instance having a plurality of attribute fields to store attributes defining the call, at least one attribute being provided by the call; and a storage arranged to store a matrix of interrelated data elements, accessible by the call instance, for enabling other attributes of the call to be determined from said at least one attribute provided by the call, the call instance being arranged to store these other attributes within the appropriate attribute fields of the call instance.
The present invention provides the central terminal with far more flexibility in the way it manages calls, since the central terminal is no longer restricted to performing fixed mapping.
The present invention will be particularly advantageous when wireless telecommunications systems are used to handle more advanced telephony features such as ISDN (Integrated Services Digital Network), since then the flexibility provided by the present invention is particularly beneficial.
For example, ISDN calls may include phone number information which a system in accordance with preferred embodiments of the present invention will be able to use to manage the call without needing to perform any fixed timeslot mapping.
ISDN services are being made available in wired telephony systems, and typically in such wired systems, the multiplexors positioned between the exchange and subscribers maintain a fixed timeslot mapping, with the ISDN protocols being used on the single connection between the exchange and the multiplexor
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Ring Tones 
