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Cellular adjunct to a public wired network

  • US 5,953,651 A
  • Filed: 10/11/1996
  • Issued: 09/14/1999
  • Est. Priority Date: 05/04/1995
  • Status: Expired due to Fees
First Claim
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1. A cellular adjunct system for extending telephone service offered by a public wired telephone network to a plurality of cellular handsets, said public wired telephone network having wired telephone sets and an operation and maintenance center for managing subscriber data related to both said wired telephone sets and said plurality of cellular handsets, said cellular adjunct system facilitating cellular communication among said plurality of cellular handsets and between said plurality of cellular handsets and said wired telephone sets, said cellular adjunct system being coupled to a base station subsystem, said base station subsystem including radio resource management facilities for permitting said plurality of cellular handsets to communicate with said base station subsystem in a cellular manner, said cellular adjunct system comprising:

  • a cellular adjunct control block coupled between said base station subsystem and switching networks in said public wired telephone network, said cellular adjunct control block including;

    a registry containing routing data related to said plurality of cellular handsets to facilitate routing calls thereto, said routing data including data indicating whether a particular cellular handset in said plurality of cellular handsets is available for receiving a call;

    a mobile switching center coupled to said registry, said mobile switching center facilitates switching of calls among said plurality of cellular handsets; and

    a mini-central office coupled to said registry and said mobile switching center, said mini-central office ascertaining whether signaling data from a first cellular handset of said cellular handsets relates to an internal call or an external call, said internal call being a call between said first cellular handset and a second cellular handset of said plurality of cellular handsets, said external call being a call between said first cellular handset and one of said wired telephone sets in said public wired telephone network, wherein said mini central office utilizes said mobile switching center for switching said internal call if said signaling data relates to said internal call, said signaling data is forwarded to said public wired telephone network for switching said external call if said signaling data relates to said external call, wherein bearer data channels for said internal calls are processed through a transcoder-rate adapter unit only if they facilitate communication among cellular handsets that communicate at different rates.

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