KR880001468U - Call state detection circuit of branched phone - Google Patents

Call state detection circuit of branched phone

Info

Publication number
KR880001468U
KR880001468U KR2019860008358U KR860008358U KR880001468U KR 880001468 U KR880001468 U KR 880001468U KR 2019860008358 U KR2019860008358 U KR 2019860008358U KR 860008358 U KR860008358 U KR 860008358U KR 880001468 U KR880001468 U KR 880001468U
Authority
KR
South Korea
Prior art keywords
branched
phone
detection circuit
state detection
call state
Prior art date
Application number
KR2019860008358U
Other languages
Korean (ko)
Other versions
KR890004822Y1 (en
Inventor
박양건
이하운
Original Assignee
삼성전자 주식회사
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 삼성전자 주식회사 filed Critical 삼성전자 주식회사
Priority to KR2019860008358U priority Critical patent/KR890004822Y1/en
Publication of KR880001468U publication Critical patent/KR880001468U/en
Application granted granted Critical
Publication of KR890004822Y1 publication Critical patent/KR890004822Y1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/82—Line monitoring circuits for call progress or status discrimination
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/71—Substation extension arrangements
    • H04M1/715—Substation extension arrangements using two or more extensions per line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
    • H04M2201/38—Displays

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
KR2019860008358U 1986-06-14 1986-06-14 Detector for indicating busy condition of branched telephones KR890004822Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019860008358U KR890004822Y1 (en) 1986-06-14 1986-06-14 Detector for indicating busy condition of branched telephones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019860008358U KR890004822Y1 (en) 1986-06-14 1986-06-14 Detector for indicating busy condition of branched telephones

Publications (2)

Publication Number Publication Date
KR880001468U true KR880001468U (en) 1988-03-15
KR890004822Y1 KR890004822Y1 (en) 1989-07-20

Family

ID=19252660

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019860008358U KR890004822Y1 (en) 1986-06-14 1986-06-14 Detector for indicating busy condition of branched telephones

Country Status (1)

Country Link
KR (1) KR890004822Y1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100480980B1 (en) * 2002-05-06 2005-04-06 (주)글로벌파밍테크 Transmission for both steering and differential

Also Published As

Publication number Publication date
KR890004822Y1 (en) 1989-07-20

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Legal Events

Date Code Title Description
A201 Request for examination
N231 Notification of change of applicant
E701 Decision to grant or registration of patent right
REGI Registration of establishment
FPAY Annual fee payment

Payment date: 20000628

Year of fee payment: 12

EXPY Expiration of term