KR930003619A - Private exchange built-in automatic exchange - Google Patents
Private exchange built-in automatic exchange Download PDFInfo
- Publication number
- KR930003619A KR930003619A KR1019910011726A KR910011726A KR930003619A KR 930003619 A KR930003619 A KR 930003619A KR 1019910011726 A KR1019910011726 A KR 1019910011726A KR 910011726 A KR910011726 A KR 910011726A KR 930003619 A KR930003619 A KR 930003619A
- Authority
- KR
- South Korea
- Prior art keywords
- memory
- built
- exchange
- automatic
- unit
- 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.)
- Ceased
Links
Landscapes
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Abstract
내용 없음.No content.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제2도는 본 발명 자동교환장치가 내장된 사설교환기의 개략 구성도,2 is a schematic configuration diagram of a private exchange device incorporating the present invention automatic exchange device,
제3도는 제2도에 따른 자동교환장치의 상세블럭 구성도,3 is a detailed block diagram of an automatic exchange apparatus according to FIG.
제4도는 제3도에 따른 메모리 정합부의 상세 블럭 구성도.4 is a detailed block diagram illustrating a memory matching unit according to FIG. 3.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019910011726A KR930003619A (en) | 1991-07-10 | 1991-07-10 | Private exchange built-in automatic exchange |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019910011726A KR930003619A (en) | 1991-07-10 | 1991-07-10 | Private exchange built-in automatic exchange |
Publications (1)
Publication Number | Publication Date |
---|---|
KR930003619A true KR930003619A (en) | 1993-02-24 |
Family
ID=67440609
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019910011726A Ceased KR930003619A (en) | 1991-07-10 | 1991-07-10 | Private exchange built-in automatic exchange |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR930003619A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100446246B1 (en) * | 2002-10-28 | 2004-08-30 | 엘지전자 주식회사 | Apparatus for generating dual tone- multi- frequency/call in private branch exchange |
-
1991
- 1991-07-10 KR KR1019910011726A patent/KR930003619A/en not_active Ceased
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100446246B1 (en) * | 2002-10-28 | 2004-08-30 | 엘지전자 주식회사 | Apparatus for generating dual tone- multi- frequency/call in private branch exchange |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3997727A (en) | Time division multiplexed digital switching apparatus | |
US3932709A (en) | Electronic business telephone | |
US3586782A (en) | Telecommunication loop system | |
US5592473A (en) | Private branch exchange system and methods for operating same | |
US4370743A (en) | Time division switching system | |
JPS6175695A (en) | Device for detecting and converting dialing and control information for special services in telephone switching systems | |
JPS6182599A (en) | Device for connecting telephone and data bus and enabling communication in both direction | |
GB921384A (en) | Improvements in or relating to time division communication systems | |
US3522381A (en) | Time division multiplex switching system | |
KR920702132A (en) | Cellular Phones with Standard Phones | |
US4340960A (en) | Time division switching system | |
US4152548A (en) | Immediate ring-back control system for time-division telephone exchange | |
US4498171A (en) | Tone source for telephone systems | |
KR930003619A (en) | Private exchange built-in automatic exchange | |
US5040172A (en) | Communication method utilizing channel highway and digital communication apparatus for realizing the same | |
GB1413690A (en) | Closed-loop telecommunication system | |
US4907262A (en) | Method of transmitting dual tone multi-frequency during communication in a private branch exchange using keyphones | |
RU2067356C1 (en) | Office automatic phone exchange station with temporal-pulse channel sharing | |
SU1628229A1 (en) | Automatic telephone exchange signal generator | |
KR940006010B1 (en) | Conversion method between u-law and a-law | |
JPH0681190B2 (en) | Registration method of digital telephone and its electronic telephone directory | |
US3160712A (en) | Electronic switching system | |
RU93031320A (en) | AUTOMATIC TELEPHONE CONCENTRATOR | |
KR950022664A (en) | Digital key phone system which can connect to ISDN network | |
JPS6277745A (en) | Voice/data intergrating and exchanging system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PA0109 | Patent application |
Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 19910710 |
|
A201 | Request for examination | ||
PA0201 | Request for examination |
Patent event code: PA02012R01D Patent event date: 19930222 Comment text: Request for Examination of Application Patent event code: PA02011R01I Patent event date: 19910710 Comment text: Patent Application |
|
PG1501 | Laying open of application | ||
E902 | Notification of reason for refusal | ||
PE0902 | Notice of grounds for rejection |
Comment text: Notification of reason for refusal Patent event date: 19950925 Patent event code: PE09021S01D |
|
E601 | Decision to refuse application | ||
PE0601 | Decision on rejection of patent |
Patent event date: 19951130 Comment text: Decision to Refuse Application Patent event code: PE06012S01D Patent event date: 19950925 Comment text: Notification of reason for refusal Patent event code: PE06011S01I |