JPS5799069A - Call display device in transfer telephone - Google Patents

Call display device in transfer telephone

Info

Publication number
JPS5799069A
JPS5799069A JP17387080A JP17387080A JPS5799069A JP S5799069 A JPS5799069 A JP S5799069A JP 17387080 A JP17387080 A JP 17387080A JP 17387080 A JP17387080 A JP 17387080A JP S5799069 A JPS5799069 A JP S5799069A
Authority
JP
Japan
Prior art keywords
circuit
signal
transfer
transmits
lines
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
JP17387080A
Other languages
Japanese (ja)
Other versions
JPS6142990B2 (en
Inventor
Masao Uchiumi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP17387080A priority Critical patent/JPS5799069A/en
Publication of JPS5799069A publication Critical patent/JPS5799069A/en
Publication of JPS6142990B2 publication Critical patent/JPS6142990B2/ja
Granted 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
    • H04M3/58—Arrangements for transferring received calls from one subscriber to another; Arrangements affording interim conversations between either the calling or the called party and a third party

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)

Abstract

PURPOSE:To prevent unnecessary interruption, by making the display of transfer without handset or push button operation at transfer telephone. CONSTITUTION:When a callout signal is incoming to incoming circuits L1, L2, a signal reception circuit 1 transmits a signal to a main trunk start control circuit 2, and the circuit 2 transmits a start control signal to a main trunk start circuit 3. The circuit 3 transmits an output of an MF signal transmission circuit 5 controlled with an MF signal control circuit 4 to lines L1' and L2'. When a telephone set at transferred location is in response, since the polarity of the lines L1', L2' is inverted, this is detected with a called party response detection circuit 6, a channel 7 is closed and automatic transfer is made. The circuit 6 produces an output at a terminal 12 and closes a contact 12 through the operation of a relay or the like, allowing to illuminate a pilot lamp 11-3 for the display of transfer.
JP17387080A 1980-12-11 1980-12-11 Call display device in transfer telephone Granted JPS5799069A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17387080A JPS5799069A (en) 1980-12-11 1980-12-11 Call display device in transfer telephone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17387080A JPS5799069A (en) 1980-12-11 1980-12-11 Call display device in transfer telephone

Publications (2)

Publication Number Publication Date
JPS5799069A true JPS5799069A (en) 1982-06-19
JPS6142990B2 JPS6142990B2 (en) 1986-09-25

Family

ID=15968653

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17387080A Granted JPS5799069A (en) 1980-12-11 1980-12-11 Call display device in transfer telephone

Country Status (1)

Country Link
JP (1) JPS5799069A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6193758A (en) * 1984-10-13 1986-05-12 Nippon Resuko:Kk Telephone transfer device of telephone set function incorporation type
JPH01209860A (en) * 1988-02-18 1989-08-23 Nippon Telegr & Teleph Corp <Ntt> Telephone set with transfer display and transfer display method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6193758A (en) * 1984-10-13 1986-05-12 Nippon Resuko:Kk Telephone transfer device of telephone set function incorporation type
JPH01209860A (en) * 1988-02-18 1989-08-23 Nippon Telegr & Teleph Corp <Ntt> Telephone set with transfer display and transfer display method

Also Published As

Publication number Publication date
JPS6142990B2 (en) 1986-09-25

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