GB2289391B - Electrical communications switching system - Google Patents

Electrical communications switching system

Info

Publication number
GB2289391B
GB2289391B GB9514140A GB9514140A GB2289391B GB 2289391 B GB2289391 B GB 2289391B GB 9514140 A GB9514140 A GB 9514140A GB 9514140 A GB9514140 A GB 9514140A GB 2289391 B GB2289391 B GB 2289391B
Authority
GB
United Kingdom
Prior art keywords
hdlc
controller
link
mlap
peripheral nodes
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.)
Expired - Fee Related
Application number
GB9514140A
Other versions
GB9514140D0 (en
GB2289391A (en
Inventor
Jozef Z Babiarz
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.)
Microsemi Semiconductor ULC
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
Priority claimed from CA002052500A external-priority patent/CA2052500C/en
Application filed by Mitel Corp filed Critical Mitel Corp
Publication of GB9514140D0 publication Critical patent/GB9514140D0/en
Publication of GB2289391A publication Critical patent/GB2289391A/en
Application granted granted Critical
Publication of GB2289391B publication Critical patent/GB2289391B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
    • H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
    • H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
    • H04L69/324—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the data link layer [OSI layer 2], e.g. HDLC
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/09—Subscriber related equipment; Analog terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/107—Control equipment for part of the connection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13031—Pulse code modulation, PCM
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13103—Memory
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13106—Microprocessor, CPU
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13174—Data transmission, file transfer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13176—Common channel signaling, CCS7
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13209—ISDN
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13292—Time division multiplexing, TDM
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13299—Bus

Abstract

A high speed communication link 20A, B, between peripheral nodes 13 and a single multi-link layer protocol (MLAP) controller 41 with an integrated HDLC framer 19 in a main control complex. Peripheral nodes contain a very simple control that forwards all the HDLC D-channel data from the peripherals to a single MLAP controller, thus making the peripheral nodes small in physical size, extremely flexible to connect to new interfaces and very portable. The bit rate of transmission of HDLC formatted data is changed from 16 kb/s or 64 kb/s to 2.048 mb/s and visa versa. Plural modified HDLC packets are multiplexed to one physical link that is terminated by an HDLC framer inside the multi-link access protocol controller or, from one MLAP controller, many peripherals can be accessed and controlled. The functions of the present invention are transparent to the end-point HDLC framers and hence to the link layer protocol and peripheral software. <IMAGE>
GB9514140A 1991-09-30 1992-09-29 Electrical communications switching system Expired - Fee Related GB2289391B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA002052500A CA2052500C (en) 1991-09-30 1991-09-30 Pabx common channel relay system
GB9220539A GB2260064B (en) 1991-09-30 1992-09-29 PABX common channel relay system

Publications (3)

Publication Number Publication Date
GB9514140D0 GB9514140D0 (en) 1995-09-13
GB2289391A GB2289391A (en) 1995-11-15
GB2289391B true GB2289391B (en) 1996-01-17

Family

ID=25674808

Family Applications (2)

Application Number Title Priority Date Filing Date
GB9514139A Expired - Fee Related GB2289601B (en) 1991-09-30 1992-09-29 Electrical communications switching system
GB9514140A Expired - Fee Related GB2289391B (en) 1991-09-30 1992-09-29 Electrical communications switching system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB9514139A Expired - Fee Related GB2289601B (en) 1991-09-30 1992-09-29 Electrical communications switching system

Country Status (1)

Country Link
GB (2) GB2289601B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100206465B1 (en) * 1996-05-04 1999-07-01 윤종용 Isdn connecting apparatus

Also Published As

Publication number Publication date
GB9514140D0 (en) 1995-09-13
GB2289601B (en) 1996-01-17
GB9514139D0 (en) 1995-09-13
GB2289391A (en) 1995-11-15
GB2289601A (en) 1995-11-22

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20110929