JPH0439959B2 - - Google Patents
Info
- Publication number
 - JPH0439959B2 JPH0439959B2 JP8691685A JP8691685A JPH0439959B2 JP H0439959 B2 JPH0439959 B2 JP H0439959B2 JP 8691685 A JP8691685 A JP 8691685A JP 8691685 A JP8691685 A JP 8691685A JP H0439959 B2 JPH0439959 B2 JP H0439959B2
 - Authority
 - JP
 - Japan
 - Prior art keywords
 - line
 - relay
 - subscriber
 - activation
 - circuit
 - 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.)
 - Expired
 
Links
- 238000000034 method Methods 0.000 claims description 27
 - 230000004913 activation Effects 0.000 claims description 24
 - 238000012544 monitoring process Methods 0.000 claims description 20
 - 230000003213 activating effect Effects 0.000 claims 1
 - 238000010586 diagram Methods 0.000 description 3
 - 238000012546 transfer Methods 0.000 description 3
 - 238000004891 communication Methods 0.000 description 2
 - 238000012423 maintenance Methods 0.000 description 2
 - 238000004804 winding Methods 0.000 description 2
 - 239000003990 capacitor Substances 0.000 description 1
 
Landscapes
- Interface Circuits In Exchanges (AREA)
 
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title | 
|---|---|---|---|
| JP8691685A JPS61245695A (ja) | 1985-04-23 | 1985-04-23 | 加入者回路 | 
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title | 
|---|---|---|---|
| JP8691685A JPS61245695A (ja) | 1985-04-23 | 1985-04-23 | 加入者回路 | 
Publications (2)
| Publication Number | Publication Date | 
|---|---|
| JPS61245695A JPS61245695A (ja) | 1986-10-31 | 
| JPH0439959B2 true JPH0439959B2 (h) | 1992-07-01 | 
Family
ID=13900173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date | 
|---|---|---|---|
| JP8691685A Granted JPS61245695A (ja) | 1985-04-23 | 1985-04-23 | 加入者回路 | 
Country Status (1)
| Country | Link | 
|---|---|
| JP (1) | JPS61245695A (h) | 
- 
        1985
        
- 1985-04-23 JP JP8691685A patent/JPS61245695A/ja active Granted
 
 
Also Published As
| Publication number | Publication date | 
|---|---|
| JPS61245695A (ja) | 1986-10-31 | 
Similar Documents
| Publication | Publication Date | Title | 
|---|---|---|
| US4232293A (en) | Line interface unit for voice and wide band signal coupling | |
| US4056695A (en) | Key telephone line circuit tone-on-hold arrangement | |
| JPH0439959B2 (h) | ||
| US4480152A (en) | Methods and apparatus for protecting line relay contacts in a telephone switching system | |
| JPS644717B2 (h) | ||
| JPS6052635B2 (ja) | ボタン電話装置における主装置間接続方式 | |
| US907662A (en) | Telephone system. | |
| US1109163A (en) | Telephone-exchange system. | |
| US1221439A (en) | Telephone system. | |
| JPS6313564A (ja) | 加入者接続線路の心線を給電回路から分離する回路装置 | |
| US745388A (en) | Telephone system. | |
| US1251604A (en) | Ringing control system for telephone-exchanges. | |
| US3825688A (en) | Telephone answering apparatus with system failure detection means | |
| JPS5854710B2 (ja) | ダイヤル情報転送方式 | |
| JPH0191547A (ja) | 共通バスシステム | |
| US921321A (en) | Telephone system. | |
| US905854A (en) | Testing system for telephone-lines. | |
| JP2766932B2 (ja) | 回線選択装置 | |
| US2644042A (en) | Multiline telephone substation instrument and circuits | |
| JPH0470297A (ja) | ループバック方式 | |
| JPS5922439B2 (ja) | 加入者監視方式 | |
| JPS6198091A (ja) | 夜間直通切替方式 | |
| JPH039675B2 (h) | ||
| JPH0541757A (ja) | バツクアツプ方式 | |
| JPH0544239B2 (h) | 
Legal Events
| Date | Code | Title | Description | 
|---|---|---|---|
| EXPY | Cancellation because of completion of term |