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Telephone registration and cancellation control in a wide area cordless telephone system

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04M-001/00
출원번호 US-0193706 (1988-05-13)
우선권정보 JP-0114494 (1987-05-13)
발명자 / 주소
  • Shitara Kenji (Tokyo JPX) Sasaki Akio (Kanagawa JPX) Murata Yoshitoshi (Kanagawa JPX)
출원인 / 주소
  • NEC Corporation (Tokyo JPX 03) Nippon Telephone and Telegraph Corporation (Tokyo JPX 03)
인용정보 피인용 횟수 : 105  인용 특허 : 8

초록

In a wide area cordless telephone system, a wide service area is divided into a plurality of local service areas identified respectively by unique codes. Each local area has home position portable cordless telephones to which telephone numbers are permanently assigned and can accommodate roaming non

대표청구항

A method for making a registration of a roaming cordless telephone in one of a plurality of local service areas and cancelling the registration, each of said service areas being identified by a unique area code and having a central controller, comprising: (a) transmitting a pre-registration polling

이 특허에 인용된 특허 (8)

  1. Yoshihara Shigeo (Tokyo JPX) Miyashita Hideo (Tokyo JPX), Channel selection in a multichannel access radio communication system without occurrence of interference.
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  8. Grover Wayne D. (Ottawa CAX), Terminal address assignment in a broadcast transmission system.

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