JPS5542461A - Absence transfer calling trunk - Google Patents

Absence transfer calling trunk

Info

Publication number
JPS5542461A
JPS5542461A JP11616178A JP11616178A JPS5542461A JP S5542461 A JPS5542461 A JP S5542461A JP 11616178 A JP11616178 A JP 11616178A JP 11616178 A JP11616178 A JP 11616178A JP S5542461 A JPS5542461 A JP S5542461A
Authority
JP
Japan
Prior art keywords
relay
mkr
ngf
call
actuates
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
JP11616178A
Other languages
Japanese (ja)
Inventor
Katsunori Hiwasa
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 JP11616178A priority Critical patent/JPS5542461A/en
Publication of JPS5542461A publication Critical patent/JPS5542461A/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
    • H04M3/54—Arrangements for diverting calls for one subscriber to another predetermined subscriber

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)

Abstract

PURPOSE:To make it possible to know previously whether absence transfer of a call is performed or not before a called subscriber answers, by supplying various ringings to a calling subscriber depending upon discrimination between an absence transfer call or others. CONSTITUTION:Dialing telephone number 2XX of SUBB for a call from SUBA causes idle register OR to start maker MKR. Then, MKR actuates number group frame NGF and also actuates a relay in NGF corresponding to 2XX received from OR as well. When an ABSK relay is previously put ino operation so as to transfer the call to SUBB to SUBC, an extension line equipment relay of MKR operates corresponding to 3XX. At this time, an ABM relay of NGF also operates. On the other hand, MKR actuates intra-office trank IOT acquisition relay F. An ABMA relay of IOT operates by earthing of NGF to send IR out to SUBC of 3XX and also to send SRBT to the tertiary winding of a D relay at the same time, besides SRBT to SUBA.
JP11616178A 1978-09-20 1978-09-20 Absence transfer calling trunk Pending JPS5542461A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11616178A JPS5542461A (en) 1978-09-20 1978-09-20 Absence transfer calling trunk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11616178A JPS5542461A (en) 1978-09-20 1978-09-20 Absence transfer calling trunk

Publications (1)

Publication Number Publication Date
JPS5542461A true JPS5542461A (en) 1980-03-25

Family

ID=14680277

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11616178A Pending JPS5542461A (en) 1978-09-20 1978-09-20 Absence transfer calling trunk

Country Status (1)

Country Link
JP (1) JPS5542461A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07321924A (en) * 1982-03-30 1995-12-08 At & T Corp Implicit main telephone set addressing method in call lover device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07321924A (en) * 1982-03-30 1995-12-08 At & T Corp Implicit main telephone set addressing method in call lover device
JP2723482B2 (en) * 1982-03-30 1998-03-09 エイ・ティ・アンド・ティ・コーポレーション Sequential transfer call cover service method

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