KR870007530U - Telephone switching device capable of simultaneous incoming and outgoing calls - Google Patents

Telephone switching device capable of simultaneous incoming and outgoing calls

Info

Publication number
KR870007530U
KR870007530U KR2019850013784U KR850013784U KR870007530U KR 870007530 U KR870007530 U KR 870007530U KR 2019850013784 U KR2019850013784 U KR 2019850013784U KR 850013784 U KR850013784 U KR 850013784U KR 870007530 U KR870007530 U KR 870007530U
Authority
KR
South Korea
Prior art keywords
switching device
device capable
outgoing calls
telephone switching
simultaneous incoming
Prior art date
Application number
KR2019850013784U
Other languages
Korean (ko)
Other versions
KR880003784Y1 (en
Inventor
김성필
문양주
Original Assignee
김성필
문양주
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 김성필, 문양주 filed Critical 김성필
Priority to KR2019850013784U priority Critical patent/KR880003784Y1/en
Publication of KR870007530U publication Critical patent/KR870007530U/en
Application granted granted Critical
Publication of KR880003784Y1 publication Critical patent/KR880003784Y1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/738—Interface circuits for coupling substations to external telephone lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
KR2019850013784U 1985-10-21 1985-10-21 Telephone modulating device KR880003784Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019850013784U KR880003784Y1 (en) 1985-10-21 1985-10-21 Telephone modulating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019850013784U KR880003784Y1 (en) 1985-10-21 1985-10-21 Telephone modulating device

Publications (2)

Publication Number Publication Date
KR870007530U true KR870007530U (en) 1987-05-13
KR880003784Y1 KR880003784Y1 (en) 1988-10-20

Family

ID=19246007

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019850013784U KR880003784Y1 (en) 1985-10-21 1985-10-21 Telephone modulating device

Country Status (1)

Country Link
KR (1) KR880003784Y1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100448026B1 (en) * 2002-10-02 2004-09-08 네오웨이브주식회사 Apparatus and Method of Receive/Send Line Selecting

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100448026B1 (en) * 2002-10-02 2004-09-08 네오웨이브주식회사 Apparatus and Method of Receive/Send Line Selecting

Also Published As

Publication number Publication date
KR880003784Y1 (en) 1988-10-20

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Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
NORF Unpaid initial registration fee