CA2074447A1 - Time division multiplex switching system for interconnecting telephone circuits which operate in accordance with different signalling systems and call formats - Google Patents

Time division multiplex switching system for interconnecting telephone circuits which operate in accordance with different signalling systems and call formats

Info

Publication number
CA2074447A1
CA2074447A1 CA2074447A CA2074447A CA2074447A1 CA 2074447 A1 CA2074447 A1 CA 2074447A1 CA 2074447 A CA2074447 A CA 2074447A CA 2074447 A CA2074447 A CA 2074447A CA 2074447 A1 CA2074447 A1 CA 2074447A1
Authority
CA
Canada
Prior art keywords
circuits
signalling
messages
switching system
division multiplex
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2074447A
Other languages
French (fr)
Other versions
CA2074447C (en
Inventor
Charles J. Breidenstein
Jerome S. Caplan
Klaus Gueldenpfennig
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Redcom Laboratories Inc
Original Assignee
Charles J. Breidenstein
Jerome S. Caplan
Klaus Gueldenpfennig
Redcom Laboratories, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Charles J. Breidenstein, Jerome S. Caplan, Klaus Gueldenpfennig, Redcom Laboratories, Inc. filed Critical Charles J. Breidenstein
Publication of CA2074447A1 publication Critical patent/CA2074447A1/en
Application granted granted Critical
Publication of CA2074447C publication Critical patent/CA2074447C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H04Q11/0407—Selecting arrangements for multiplex systems for time-division multiplexing using a stored programme control

Abstract

A time division multiplex switching system converts call formats and signalling protocols so that calls can be interchanged between circuits originating in different networks thereby providing a gateway for telephone transmissions originating from sources (e.g., foreign countries) having differences in transmission (signal attenuation characteristics and companding laws) and signalling and numbering plans or protocols. This switching system is characterized by a processor which is programmed to identify the circuits requiring interconnection and to process signalling messages in accordance with the signalling systems and formats used in the circuits, while translating the signalling messages into common, protocol independent signaling messages which are used for establishing time division multiplex connections in a time slot interchange which is connected to the circuits via PCM highways and for exchanging signalling information (e.g., as to seizure, detection and release) between the circuits; the signalling messages also containing information for conversion of PCM data messages which are switched in the time slot interchange thereby reconciling differences in transmission, such as the companding law used for PCM encoding and decoding and the attenuation (pad value) of the call data in the circuits. The circuits may, for example, be incoming and outgoing trunks.
CA002074447A 1991-08-23 1992-07-23 Time division multiplex switching system for interconnecting telephone circuits which operate in accordance with different signalling systems and call formats Expired - Lifetime CA2074447C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/749,248 US5239542A (en) 1991-08-23 1991-08-23 Time division multiplex switching system for interconnecting telephone circuits which operate in accordance with different signalling systems and call formats
US749,248 1991-08-23

Publications (2)

Publication Number Publication Date
CA2074447A1 true CA2074447A1 (en) 1993-02-24
CA2074447C CA2074447C (en) 1999-01-19

Family

ID=25012932

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002074447A Expired - Lifetime CA2074447C (en) 1991-08-23 1992-07-23 Time division multiplex switching system for interconnecting telephone circuits which operate in accordance with different signalling systems and call formats

Country Status (7)

Country Link
US (1) US5239542A (en)
EP (1) EP0530443B1 (en)
JP (1) JPH05308689A (en)
AT (1) ATE174748T1 (en)
CA (1) CA2074447C (en)
DE (1) DE69227868T2 (en)
ES (1) ES2125240T3 (en)

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Also Published As

Publication number Publication date
EP0530443B1 (en) 1998-12-16
EP0530443A3 (en) 1993-11-18
ES2125240T3 (en) 1999-03-01
DE69227868T2 (en) 1999-08-05
ATE174748T1 (en) 1999-01-15
EP0530443A2 (en) 1993-03-10
CA2074447C (en) 1999-01-19
US5239542A (en) 1993-08-24
JPH05308689A (en) 1993-11-19
DE69227868D1 (en) 1999-01-28

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