JPS545307A - External channel circuit for key telephone - Google Patents
External channel circuit for key telephoneInfo
- Publication number
- JPS545307A JPS545307A JP7026477A JP7026477A JPS545307A JP S545307 A JPS545307 A JP S545307A JP 7026477 A JP7026477 A JP 7026477A JP 7026477 A JP7026477 A JP 7026477A JP S545307 A JPS545307 A JP S545307A
- Authority
- JP
- Japan
- Prior art keywords
- key telephone
- channel circuit
- external channel
- external
- telephone
- 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.)
- Granted
Links
Landscapes
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7026477A JPS545307A (en) | 1977-06-14 | 1977-06-14 | External channel circuit for key telephone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7026477A JPS545307A (en) | 1977-06-14 | 1977-06-14 | External channel circuit for key telephone |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS545307A true JPS545307A (en) | 1979-01-16 |
JPS562816B2 JPS562816B2 (en) | 1981-01-21 |
Family
ID=13426487
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7026477A Granted JPS545307A (en) | 1977-06-14 | 1977-06-14 | External channel circuit for key telephone |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS545307A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59122507U (en) * | 1983-02-07 | 1984-08-17 | オタリ株式会社 | Tape winding diameter detection device |
-
1977
- 1977-06-14 JP JP7026477A patent/JPS545307A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59122507U (en) * | 1983-02-07 | 1984-08-17 | オタリ株式会社 | Tape winding diameter detection device |
Also Published As
Publication number | Publication date |
---|---|
JPS562816B2 (en) | 1981-01-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS53146506A (en) | Circuit for controlling radio telephone | |
ZA781059B (en) | Subscriber line-trunk circuit | |
JPS5354402A (en) | Circuit for setting subscriber*s key telephone set | |
GB2011230B (en) | Loudspeaking telephone | |
GB2002201B (en) | Telephone set | |
JPS5327305A (en) | Circuit configuration for open telephone | |
JPS5452404A (en) | Key telephone system holding control circuit | |
JPS5387109A (en) | Telephone line interface circuit | |
JPS53128205A (en) | Telephone set | |
JPS5379538A (en) | Channel cross talk compensating circuit | |
JPS5472915A (en) | Radio telephone | |
JPS5317006A (en) | Key telephone line circuit | |
AU4082978A (en) | Telephone party line control circuit | |
GB1543300A (en) | Electronic network for telephone set | |
JPS53122308A (en) | Telephone line circuit | |
JPS53109405A (en) | Door phone anwering system for button telephone set | |
JPS545307A (en) | External channel circuit for key telephone | |
JPS53114305A (en) | Loudspeaking telephone set | |
JPS5472906A (en) | Loudspeaking telephone circuit | |
CA42883S (en) | Housing for telephone set | |
JPS5427302A (en) | Telephone set | |
JPS5469307A (en) | Loudspeaking telephone set | |
GB2000939B (en) | Telephone set | |
JPS53110405A (en) | Circuit for preventing side tone for twoowire telephone set | |
GB1542710A (en) | Electronic telephone |