KR910003567U - 전화기의 전용회선 시험장치 - Google Patents
전화기의 전용회선 시험장치Info
- Publication number
- KR910003567U KR910003567U KR2019890010244U KR890010244U KR910003567U KR 910003567 U KR910003567 U KR 910003567U KR 2019890010244 U KR2019890010244 U KR 2019890010244U KR 890010244 U KR890010244 U KR 890010244U KR 910003567 U KR910003567 U KR 910003567U
- Authority
- KR
- South Korea
- Prior art keywords
- telephone line
- test equipment
- line test
- equipment
- telephone
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/24—Arrangements for testing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/80—Telephone line holding circuits
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019890010244U KR920001540Y1 (ko) | 1989-07-13 | 1989-07-13 | 전화기의 전용회선 시험장치 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019890010244U KR920001540Y1 (ko) | 1989-07-13 | 1989-07-13 | 전화기의 전용회선 시험장치 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR910003567U true KR910003567U (ko) | 1991-02-27 |
KR920001540Y1 KR920001540Y1 (ko) | 1992-03-05 |
Family
ID=19288221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR2019890010244U KR920001540Y1 (ko) | 1989-07-13 | 1989-07-13 | 전화기의 전용회선 시험장치 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR920001540Y1 (ko) |
-
1989
- 1989-07-13 KR KR2019890010244U patent/KR920001540Y1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR920001540Y1 (ko) | 1992-03-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E701 | Decision to grant or registration of patent right | ||
REGI | Registration of establishment | ||
FPAY | Annual fee payment |
Payment date: 20040305 Year of fee payment: 13 |
|
EXPY | Expiration of term |