IT1228816B - Digital telephone system with distributed processing and switching - Google Patents

Digital telephone system with distributed processing and switching

Info

Publication number
IT1228816B
IT1228816B IT8919865A IT1986589A IT1228816B IT 1228816 B IT1228816 B IT 1228816B IT 8919865 A IT8919865 A IT 8919865A IT 1986589 A IT1986589 A IT 1986589A IT 1228816 B IT1228816 B IT 1228816B
Authority
IT
Italy
Prior art keywords
interface circuits
resident
bus
switching
telephone system
Prior art date
Application number
IT8919865A
Other languages
Italian (it)
Other versions
IT8919865A0 (en
Inventor
Richard Anthony Hatherill
Bernard J Trudel
Mark Robert Coomber
William Creighton Mitchell
Original Assignee
Mitel Corp
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 Mitel Corp filed Critical Mitel Corp
Priority to IT8919865A priority Critical patent/IT1228816B/en
Publication of IT8919865A0 publication Critical patent/IT8919865A0/en
Application granted granted Critical
Publication of IT1228816B publication Critical patent/IT1228816B/en

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  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

The system includes a universal backplane bus (1) and a number of interface circuits (3,5) connected to remote peripherals, for effecting bidirectional communication of information signals between the remote peripherals via the bus, as well as the exchange of message signals between local control circuit (23A,B) resident on individual ones of the interface circuits. Each inteface circuit is further comprised of a digital time and space switch DX for transmitting the information signals in PCM format between the remote peripherals and the universal bus, under control of the control circuitry resident on respective ones of the interface circuits. An HDLC controller (25A,B) is provided on each of the interface circuits for controlling the exchange of message signals between the local control circuit resident on the respective ones of the interface circuits.
IT8919865A 1989-03-22 1989-03-22 Digital telephone system with distributed processing and switching IT1228816B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT8919865A IT1228816B (en) 1989-03-22 1989-03-22 Digital telephone system with distributed processing and switching

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT8919865A IT1228816B (en) 1989-03-22 1989-03-22 Digital telephone system with distributed processing and switching

Publications (2)

Publication Number Publication Date
IT8919865A0 IT8919865A0 (en) 1989-03-22
IT1228816B true IT1228816B (en) 1991-07-04

Family

ID=11161903

Family Applications (1)

Application Number Title Priority Date Filing Date
IT8919865A IT1228816B (en) 1989-03-22 1989-03-22 Digital telephone system with distributed processing and switching

Country Status (1)

Country Link
IT (1) IT1228816B (en)

Also Published As

Publication number Publication date
IT8919865A0 (en) 1989-03-22

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970328