JPH0347795B2 - - Google Patents
Info
- Publication number
- JPH0347795B2 JPH0347795B2 JP60041780A JP4178085A JPH0347795B2 JP H0347795 B2 JPH0347795 B2 JP H0347795B2 JP 60041780 A JP60041780 A JP 60041780A JP 4178085 A JP4178085 A JP 4178085A JP H0347795 B2 JPH0347795 B2 JP H0347795B2
- Authority
- JP
- Japan
- Prior art keywords
- telephone
- transistor
- switching element
- capacitor
- hold
- 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 - Lifetime
Links
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60041780A JPS61201541A (ja) | 1985-03-05 | 1985-03-05 | 親子電話装置における保留自動解除装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60041780A JPS61201541A (ja) | 1985-03-05 | 1985-03-05 | 親子電話装置における保留自動解除装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61201541A JPS61201541A (ja) | 1986-09-06 |
JPH0347795B2 true JPH0347795B2 (forum.php) | 1991-07-22 |
Family
ID=12617878
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP60041780A Granted JPS61201541A (ja) | 1985-03-05 | 1985-03-05 | 親子電話装置における保留自動解除装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61201541A (forum.php) |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6129560U (ja) * | 1984-07-25 | 1986-02-22 | 日通工株式会社 | 電話機の自動解除機能付保留回路 |
-
1985
- 1985-03-05 JP JP60041780A patent/JPS61201541A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS61201541A (ja) | 1986-09-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO1986007659A1 (en) | Telephone line interface circuitry for telecommunications equipment | |
US4096358A (en) | Key telephone system signal priority arrangement | |
SE467810B (sv) | Saett att signalera/kommunicera inom ett porttelefonsystem samt porttelefonsystem foer kommunikation enligt saettet | |
US4747128A (en) | Telephone privacy protector | |
US4075434A (en) | Key telephone privacy exclusion apparatus | |
US3941943A (en) | Privacy circuit for key telephone systems | |
US4117274A (en) | Key telephone privacy circuit | |
JPH0347795B2 (forum.php) | ||
JPH0233423Y2 (forum.php) | ||
JPH0316063B2 (forum.php) | ||
US3515813A (en) | Telephone ringing signal transfer device | |
US3748404A (en) | Telephone line circuit embodying a triggerable avalanche device | |
US3566044A (en) | Time-out circuit for key telephone systems | |
US3649772A (en) | Line card circuit for a key telephone system | |
JPH033436B2 (forum.php) | ||
JPH037306B2 (forum.php) | ||
JPH033437B2 (forum.php) | ||
JPH0316064B2 (forum.php) | ||
JPH033438B2 (forum.php) | ||
US5040207A (en) | Two-telephone intercom | |
KR850001844B1 (ko) | 전화기 통화 전환장치 | |
US3536851A (en) | Restricted telephone station set | |
JP2859907B2 (ja) | 網制御装置 | |
JPH029742B2 (forum.php) | ||
KR920006758Y1 (ko) | 비사용 오프훅 전화기 자동복구회로 |