JPS55137762A - Unhooking glow signal transmission system - Google Patents

Unhooking glow signal transmission system

Info

Publication number
JPS55137762A
JPS55137762A JP4530279A JP4530279A JPS55137762A JP S55137762 A JPS55137762 A JP S55137762A JP 4530279 A JP4530279 A JP 4530279A JP 4530279 A JP4530279 A JP 4530279A JP S55137762 A JPS55137762 A JP S55137762A
Authority
JP
Japan
Prior art keywords
subscriber
unhooking
call
glow signal
signal transmission
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
JP4530279A
Other languages
Japanese (ja)
Inventor
Masahisa Takiguchi
Hideyasu Mori
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP4530279A priority Critical patent/JPS55137762A/en
Publication of JPS55137762A publication Critical patent/JPS55137762A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/08—Indicating faults in circuits or apparatus
    • H04M3/14—Signalling existence of persistent "off-hook" condition

Abstract

PURPOSE:To prevent increment of the ineffective traffic density of an exchange by sending the unhooking glow signal to a calling subscriber for permanent call of a called subscriber. CONSTITUTION:If subscriber B is in the permanent call state when subscriber A dials to call subscriber B, central control unit 9 detects it to transmit the permanent glow signal to subscriber A through tone trunk 4. Thus, subscriber A extends re- call.
JP4530279A 1979-04-16 1979-04-16 Unhooking glow signal transmission system Pending JPS55137762A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4530279A JPS55137762A (en) 1979-04-16 1979-04-16 Unhooking glow signal transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4530279A JPS55137762A (en) 1979-04-16 1979-04-16 Unhooking glow signal transmission system

Publications (1)

Publication Number Publication Date
JPS55137762A true JPS55137762A (en) 1980-10-27

Family

ID=12715514

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4530279A Pending JPS55137762A (en) 1979-04-16 1979-04-16 Unhooking glow signal transmission system

Country Status (1)

Country Link
JP (1) JPS55137762A (en)

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