Method and system for communication caller identification information between a remote site and a central monitoring station over PSTN
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H04M-011/00
H04M-011/04
출원번호
US-0744615
(2001-01-25)
우선권정보
CA-2242272 (1998-07-31); CA-2249711 (1998-10-20)
국제출원번호
PCT/CA99/00689
(1999-07-30)
국제공개번호
WO00/08839
(2000-02-17)
발명자
/ 주소
Dosani, Nazir
Ladha, Nizar
인용정보
피인용 횟수 :
57인용 특허 :
5
초록▼
A system (10, 100) for communicating information and caller identification between entities (11, 13) over a public switched telephone network (PSTN) (20) includes at least one remote site (11) including a device (14, 115, 117) whose status is to be monitored. The remote site is coupled to the PSTN (
A system (10, 100) for communicating information and caller identification between entities (11, 13) over a public switched telephone network (PSTN) (20) includes at least one remote site (11) including a device (14, 115, 117) whose status is to be monitored. The remote site is coupled to the PSTN (20) and is operable to make a call when the device status is to be determined. A monitoring station (13) includes a plurality of call receiving interfaces (26) coupled to the PSTN (20) and a processor (30) coupled to the call receiving interfaces (26). Each call receiving interface (26) is assigned a different telephone number corresponding to information concerning the status of the device. Each call receiving interface (26) conveys caller identification data received from the PSTM (20) and call receiving interface identification data to the processor (30) in response to a call received from the remote site (11) over the PSTN to allow the processor to determine the status of the device and its location without requiring the call to be answered.
대표청구항▼
A system (10, 100) for communicating information and caller identification between entities (11, 13) over a public switched telephone network (PSTN) (20) includes at least one remote site (11) including a device (14, 115, 117) whose status is to be monitored. The remote site is coupled to the PSTN (
A system (10, 100) for communicating information and caller identification between entities (11, 13) over a public switched telephone network (PSTN) (20) includes at least one remote site (11) including a device (14, 115, 117) whose status is to be monitored. The remote site is coupled to the PSTN (20) and is operable to make a call when the device status is to be determined. A monitoring station (13) includes a plurality of call receiving interfaces (26) coupled to the PSTN (20) and a processor (30) coupled to the call receiving interfaces (26). Each call receiving interface (26) is assigned a different telephone number corresponding to information concerning the status of the device. Each call receiving interface (26) conveys caller identification data received from the PSTM (20) and call receiving interface identification data to the processor (30) in response to a call received from the remote site (11) over the PSTN to allow the processor to determine the status of the device and its location without requiring the call to be answered. mum likely value from the plurality of totals. 16. The method as set forth in claim 13, with step of selecting including the step of selecting a particular value, from the plurality of totals, initially crossing a threshold. 17. A method for acquiring synchronization to a chip-sequence signal, having a plurality of chips, embedded in a spread-spectrum signal, comprising the steps of: cycling, in a shift register, a set of M replicas of the chip-sequence signal, with said shift register having a plurality of taps corresponding to the plurality of chips, repsectively; comparing, in plurality of comparators, with a delay of 1/M chip duration per replica of the chip-sequence signal, a multiplicity of chips of the chip-sequence signal embedded in the spread-spectrum signal, with a multiplicity of chips of the replica of the chip-sequence signal stored in said shift register, thereby generating for the plurality of taps of said shift register a plurality of compared values at said plurality of comparators, respectively, and thereby generating for each comparator from a sequence of comparisons, a multiplicity of compared values; up and down counting, in a plurality of counters, a respective multiplicity of compared values, respectively, thereby generatin
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이 특허에 인용된 특허 (5)
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