JPS57111197A - Night trunk line switching system - Google Patents

Night trunk line switching system

Info

Publication number
JPS57111197A
JPS57111197A JP18694680A JP18694680A JPS57111197A JP S57111197 A JPS57111197 A JP S57111197A JP 18694680 A JP18694680 A JP 18694680A JP 18694680 A JP18694680 A JP 18694680A JP S57111197 A JPS57111197 A JP S57111197A
Authority
JP
Japan
Prior art keywords
relay
switch
telephone
night
channel network
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
JP18694680A
Other languages
Japanese (ja)
Inventor
Shigeki Hashimoto
Noriyoshi Oohino
Tsuguo Muramoto
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP18694680A priority Critical patent/JPS57111197A/en
Publication of JPS57111197A publication Critical patent/JPS57111197A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/50—Centralised arrangements for answering calls; Centralised arrangements for recording messages for absent or busy subscribers ; Centralised arrangements for recording messages
    • H04M3/51—Centralised call answering arrangements requiring operator intervention, e.g. call or contact centers for telemarketing
    • H04M3/515—Night service systems

Landscapes

  • Business, Economics & Management (AREA)
  • Marketing (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

PURPOSE:To eliminate a call monitor relay for a private exchange, by providing a switch device between a central office trunk and a channel network as well as between a specific extension telephone and the channel network, and reading the monitor during a non-busy state out of a main storage device. CONSTITUTION:In the daytime mode, a relay TL works within a switch device TR with a central office trunk TRK and a main telephone EX connected to a channel network SW respectively. The daytime mode is switched to the night mode by actuating a changeover switch NT. A CPU (not shown in the diagram) detects the operation of the switch NT through a scanner SCN, reads the non- busy information out of a main storage device and releases a relay TL via a relay controller RC. Thus the trunk TRK is connected to the telephone EX via contacts tl2 and (r). For the incoming of the night mode, a relay R within the TRK works to call out the telephone EX. For the switching to the daytime mode, the operation of the switch NT is detected, and the relay TL is worked via a device RC after confirmation of the non-busy state.
JP18694680A 1980-12-26 1980-12-26 Night trunk line switching system Pending JPS57111197A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18694680A JPS57111197A (en) 1980-12-26 1980-12-26 Night trunk line switching system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18694680A JPS57111197A (en) 1980-12-26 1980-12-26 Night trunk line switching system

Publications (1)

Publication Number Publication Date
JPS57111197A true JPS57111197A (en) 1982-07-10

Family

ID=16197484

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18694680A Pending JPS57111197A (en) 1980-12-26 1980-12-26 Night trunk line switching system

Country Status (1)

Country Link
JP (1) JPS57111197A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110572516A (en) * 2019-09-05 2019-12-13 惠州Tcl移动通信有限公司 Call control method, device, storage medium and terminal equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110572516A (en) * 2019-09-05 2019-12-13 惠州Tcl移动通信有限公司 Call control method, device, storage medium and terminal equipment
US11736608B2 (en) 2019-09-05 2023-08-22 Huizhou Tcl Mobile Communication Co., Ltd. Call control method and apparatus, and storage medium and terminal device

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