JPS577656A - Packet and circuit combined exchange system - Google Patents

Packet and circuit combined exchange system

Info

Publication number
JPS577656A
JPS577656A JP8163680A JP8163680A JPS577656A JP S577656 A JPS577656 A JP S577656A JP 8163680 A JP8163680 A JP 8163680A JP 8163680 A JP8163680 A JP 8163680A JP S577656 A JPS577656 A JP S577656A
Authority
JP
Japan
Prior art keywords
trunk
packet
circuit
exchange
interoffice
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.)
Pending
Application number
JP8163680A
Other languages
Japanese (ja)
Inventor
Nobuaki Saito
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP8163680A priority Critical patent/JPS577656A/en
Publication of JPS577656A publication Critical patent/JPS577656A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/64—Hybrid switching systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

PURPOSE:To improve the efficiency of use of interoffice trunk lines in a packet and circuit combined exchange system, by specifying the uses of the individual interoffice trunk lines according to traffice without fixing them. CONSTITUTION:It makes to difference whether interoffice trunk line trunks 3 and 4 are used for circuit exchange or packet exchange. A controller 10 monitors the traffic of the circuit exchage and that of the packet exchange all the time and, according to the traffic, controls a channel switch 2 to connect one interoffice trunk line trunk, e.g., the trunk 4 to a packet composing and decomposing circuit 5 via a modem 6, thus using the trunk 4 for the packet exchange. The trunk 3, on the other hand, is used for the circuit exchange. Therefore, if an origination connection request is sent from a data terminal 8, the packet composing and decomposing circuit 5 is connected via modems 9 and 7 through the operation of the channel switch 2, and further connected to the other station via the trunk 4.
JP8163680A 1980-06-17 1980-06-17 Packet and circuit combined exchange system Pending JPS577656A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8163680A JPS577656A (en) 1980-06-17 1980-06-17 Packet and circuit combined exchange system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8163680A JPS577656A (en) 1980-06-17 1980-06-17 Packet and circuit combined exchange system

Publications (1)

Publication Number Publication Date
JPS577656A true JPS577656A (en) 1982-01-14

Family

ID=13751816

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8163680A Pending JPS577656A (en) 1980-06-17 1980-06-17 Packet and circuit combined exchange system

Country Status (1)

Country Link
JP (1) JPS577656A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4486878A (en) * 1981-09-23 1984-12-04 U.S. Philips Corporation Digital telephone exchange with means for processing packet-switched data
US4539676A (en) * 1982-05-03 1985-09-03 At&T Bell Laboratories Bulk/interactive data switching system
US4556972A (en) * 1983-12-27 1985-12-03 At&T Bell Laboratories Arrangement for routing data packets through a circuit switch
US8978502B2 (en) 2009-11-09 2015-03-17 Robert Bosch Gmbh Transmission drive unit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4486878A (en) * 1981-09-23 1984-12-04 U.S. Philips Corporation Digital telephone exchange with means for processing packet-switched data
US4539676A (en) * 1982-05-03 1985-09-03 At&T Bell Laboratories Bulk/interactive data switching system
US4556972A (en) * 1983-12-27 1985-12-03 At&T Bell Laboratories Arrangement for routing data packets through a circuit switch
US8978502B2 (en) 2009-11-09 2015-03-17 Robert Bosch Gmbh Transmission drive unit

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