GB1162047A - Automatic Telephone System - Google Patents
Automatic Telephone SystemInfo
- Publication number
- GB1162047A GB1162047A GB22090/67A GB2209067A GB1162047A GB 1162047 A GB1162047 A GB 1162047A GB 22090/67 A GB22090/67 A GB 22090/67A GB 2209067 A GB2209067 A GB 2209067A GB 1162047 A GB1162047 A GB 1162047A
- Authority
- GB
- United Kingdom
- Prior art keywords
- exchange
- station
- unattended
- answering machine
- automatic
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephonic Communication Services (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Abstract
1,162,047. Automatic exchange systems. AGFA-GEVAERT A.G. 12 May, 1967 [13 May, 1966], No. 22090/67. Heading H4K. To obtain access to a device such as an eavesdropping microphone in a children's room or to the controls of an oven, the calling subscriber dials a service code before dialling the number of the wanted but unattended station, the exchange discriminating accordingly. The exchange may discriminate by sending a continuous A.C. to the unattended station where a rectifier distinguishes it from ordinary ringing and effects reply and connection to the device. Where, however, the system is such that before leaving the station unattended the normal station circuit is switched out and the device is switched into the exchange line, and the exchange is requested to route calls to an automatic answering machine connected to the station live circuit, the exchange responds to the service code by disconnecting the automatic answering machine and connecting to the line. In these circumstances reply to a call to the unattended station is made by the control circuit of the answering machine. The con-. nection may be forcibly released after a fixed time.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEA0052473 | 1966-05-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1162047A true GB1162047A (en) | 1969-08-20 |
Family
ID=6938496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22090/67A Expired GB1162047A (en) | 1966-05-13 | 1967-05-12 | Automatic Telephone System |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH458448A (en) |
| DE (1) | DE1271780B (en) |
| FR (1) | FR1522853A (en) |
| GB (1) | GB1162047A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2273630A (en) * | 1992-12-15 | 1994-06-22 | Murat Anthony Carnall | Telecommunications systems |
| US6002938A (en) * | 1992-12-15 | 1999-12-14 | Carnall; Murat Anthony | Mobile telephone which inhibits an operation of an indication for a calling telephone requesting communication |
-
1966
- 1966-05-13 DE DEP1271A patent/DE1271780B/en active Pending
-
1967
- 1967-05-12 CH CH676567A patent/CH458448A/en unknown
- 1967-05-12 FR FR106278A patent/FR1522853A/en not_active Expired
- 1967-05-12 GB GB22090/67A patent/GB1162047A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2273630A (en) * | 1992-12-15 | 1994-06-22 | Murat Anthony Carnall | Telecommunications systems |
| GB2273630B (en) * | 1992-12-15 | 1997-05-14 | Murat Anthony Carnall | Telecommunications |
| US6002938A (en) * | 1992-12-15 | 1999-12-14 | Carnall; Murat Anthony | Mobile telephone which inhibits an operation of an indication for a calling telephone requesting communication |
Also Published As
| Publication number | Publication date |
|---|---|
| CH458448A (en) | 1968-06-30 |
| FR1522853A (en) | 1968-04-26 |
| DE1271780B (en) | 1968-07-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |