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GB2022373A - Interconnecting terminal devices in a digital data network - Google Patents

Interconnecting terminal devices in a digital data network

Info

Publication number
GB2022373A
GB2022373A GB7914223A GB7914223A GB2022373A GB 2022373 A GB2022373 A GB 2022373A GB 7914223 A GB7914223 A GB 7914223A GB 7914223 A GB7914223 A GB 7914223A GB 2022373 A GB2022373 A GB 2022373A
Authority
GB
United Kingdom
Prior art keywords
data
terminals
rates
terminal devices
normal data
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
GB7914223A
Other versions
GB2022373B (en
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.)
Ericsson Australia Pty Ltd
Original Assignee
LM Ericsson Pty Ltd
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 LM Ericsson Pty Ltd filed Critical LM Ericsson Pty Ltd
Publication of GB2022373A publication Critical patent/GB2022373A/en
Application granted granted Critical
Publication of GB2022373B publication Critical patent/GB2022373B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0262—Arrangements for detecting the data rate of an incoming signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Telephonic Communication Services (AREA)
  • Communication Control (AREA)

Abstract

The terminal devices normally operate at different data rates or they are to be interconnected over data links in the network which normally operate at different data rates. The method involves firstly determining, by processor means at a switching point (SP) in the network, the normal data bit rate of two terminals (A, B) to be interconnected as well as the normal data bit rate of the or each data link over which the connection is to be made. In the case where there is a difference in the normal data bit rates the processor initiates a procedure to send a digital bit stream to one or both of the terminals and having the bit rate required to cause the terminals to operate, in the course of the connection, at a common data rate equal to the lowest of the normal data bit rates of said terminals and said data link. <IMAGE>
GB7914223A 1978-04-28 1979-04-24 Interconntecting terminal device in a digital data network Expired GB2022373B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AUPD420478 1978-04-28

Publications (2)

Publication Number Publication Date
GB2022373A true GB2022373A (en) 1979-12-12
GB2022373B GB2022373B (en) 1983-02-02

Family

ID=3767537

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7914223A Expired GB2022373B (en) 1978-04-28 1979-04-24 Interconntecting terminal device in a digital data network

Country Status (4)

Country Link
CA (1) CA1124879A (en)
DE (1) DE2917330A1 (en)
FR (1) FR2424676A1 (en)
GB (1) GB2022373B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2169174A (en) * 1984-11-28 1986-07-02 Canon Kk Data communication apparatus
US4901277A (en) * 1985-09-17 1990-02-13 Codex Corporation Network data flow control technique
GB2181926B (en) * 1985-09-17 1990-02-14 Codex Corp Network data flow control

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3434117A (en) * 1967-04-24 1969-03-18 Ibm Automatic transmission speed selection control for a data transmission system
DE1946694A1 (en) * 1969-09-15 1971-03-25 Siemens Ag Method for data transmission with subscribers of different speed classes
US3676858A (en) * 1970-09-30 1972-07-11 Honeywell Inf Systems Method, apparatus and computer program for determining the transmission rate and coding configuration of remote terminals
DE2236283A1 (en) * 1972-07-24 1974-02-07 Siemens Ag SWITCHING PROCEDURE FOR REMOTE COMMUNICATION SYSTEMS WITH DATA TRANSFER BETWEEN SUBSCRIBERS
FR2206544B1 (en) * 1972-11-10 1976-12-31 Trt Telecom Radio Electr
JPS5926152B2 (en) * 1974-03-16 1984-06-25 株式会社リコー Facsimile communication system and its equipment

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2169174A (en) * 1984-11-28 1986-07-02 Canon Kk Data communication apparatus
GB2169174B (en) * 1984-11-28 1989-06-01 Canon Kk Data communication apparatus
US4910506A (en) * 1984-11-28 1990-03-20 Canon Kabushiki Kaisha Data communication apparatus
US4901277A (en) * 1985-09-17 1990-02-13 Codex Corporation Network data flow control technique
GB2181926B (en) * 1985-09-17 1990-02-14 Codex Corp Network data flow control

Also Published As

Publication number Publication date
FR2424676A1 (en) 1979-11-23
FR2424676B1 (en) 1985-03-22
CA1124879A (en) 1982-06-01
DE2917330A1 (en) 1979-11-08
GB2022373B (en) 1983-02-02

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 19990423