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EP0589619A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Architecture for a wireless telecommunication system

Assignee: AT&T Inc
•
Filing: 1993-09-16
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Granted: —
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Expires: 2013-09-16
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Abstract

Abstract This invention relates to apparatus for offering wireless telecommunication service. A switch such as an automatic Private Branch Exchange (PBX) (30), equipped to communicate with Integrated Services Digital Network (ISDN) stations sends ISDN signaling messages to and receives ISDN signaling messages from a protocol converter (20). The protocol converter, which also communicates with a wireless cell site (10), converts messages between the ISDN protocol and a protocol for communicating (via LAPB) with the wireless cell site. The cell site sets up wireless connections to a mobile station (1), essentially in its prior art mode, and the PBX sets up connections to the cell site essentially in its prior art ISDN station control mode. The PBX is connected to a class 5 (central office) telecommunications switching system (45) for establishing connections between the public switched telephone network (46) and the PBX, or between outlets of the PBX for a call between wireless stations.

Inventors

  • 👤 William Keith Cline
  • 👤 James Joseph Fuentes

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-07 10:14
CPC Classifications
H; H04; H04W; H04W84/00; H04W84/02; H04W84/10; H04W84/16; H04Q; H04Q11/00; H04Q11/04; H04Q11/0428; H04Q2213/00; H04Q2213/13098; H04Q2213/13173; H04Q2213/13175; H04Q2213/13176; H04Q2213/13204; H04Q2213/13205; H04Q2213/13209; H04Q2213/1322; H04Q2213/13292; H04Q2213/13298

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 220 words
A wireless telecommunication system, comprising: a central office telecommunication switch (central office) for connection to a public switched telephone network; a telecommunication switching system (switch); a wireless cell site; and protocol conversion means for converting between a cell site control protocol, said cell site control protocol for signaling to and receiving signals from a wireless cell site, and an out-of-band telephone station control (OTSC) protocol; said switch connected to said cell site by a plurality of first communication links; said switch connected to said cell site by a data link means via said protocol conversion means; said central office connected to said switch by a plurality of second communication links; said central office for establishing connections among ones of said second communication links and for establishing connections between ones of said second communication links and said public switched telephone network; wherein said switch sends OTSC protocol signaling messages to said protocol conversion means, and said protocol conversion means converts said OTSC protocol signaling messages to cell site control protocol messages for transmission to said cell site, for controlling said cell site; wherein said cell site sends cell site control protocol signaling messages to said protocol conversion means, and said protocol conversion means converts said cell site control protocol signaling messages to OTSC protocol signaling messages for transmission to said switch.
Claim 2
Dependent Claim 27 words
The system of claim 1 wherein ones of said plurality of second links are terminated on ones of a plurality of line interfaces at said central office.
Claim 3
Dependent Claim 17 words
The method of the system of claim 1 wherein said switch is a private branch exchange (PBX).
Claim 4
Dependent Claim 18 words
The system of claim 3 wherein said plurality of second communication links comprises a plurality of PBX trunks.
Claim 5
Dependent Claim 17 words
The system of claim 1 wherein said OTSC protocol is an integrated services digital network (ISDN) protocol.
Claim 6
Dependent Claim 15 words
The system of claim 1 wherein said central office is a program controlled switching system.
Claim 7
Dependent Claim 14 words
The system of claim 6 wherein said central office is a digital switching system.
Claim 8
Dependent Claim 14 words
The system of claim 1 wherein said central office is a step-by-step switching system.
Claim 9
Dependent Claim 19 words
The system of claim 1 wherein said central office is further connected to a plurality of land-based telephone lines.
Claim 10
Dependent Claim 12 words
The system of claim 1 wherein said central office performs billing recording.

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