GB2204464A - Telephone system - Google Patents
Telephone systemInfo
- Publication number
- GB2204464A GB2204464A GB08813681A GB8813681A GB2204464A GB 2204464 A GB2204464 A GB 2204464A GB 08813681 A GB08813681 A GB 08813681A GB 8813681 A GB8813681 A GB 8813681A GB 2204464 A GB2204464 A GB 2204464A
- Authority
- GB
- United Kingdom
- Prior art keywords
- extension
- identifying signal
- telephone system
- signal
- calling
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/57—Arrangements for indicating or recording the number of the calling subscriber at the called subscriber's set
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Abstract
In a telephone system a calling extension includes means to transmit an identifying signal characteristic of the calling extension, to a called extension which has a display responsive to receipt of the identifying signal to indicate the identity of the calling extension. On receipt of an identifying signal the called extension transmits a return signal to the calling extension, which return signal serves to terminate transmission of the identifying signal.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB868624514A GB8624514D0 (en) | 1986-10-13 | 1986-10-13 | Telephone systems |
PCT/GB1987/000717 WO1988002964A1 (en) | 1986-10-13 | 1987-10-13 | Telephone system |
Publications (2)
Publication Number | Publication Date |
---|---|
GB8813681D0 GB8813681D0 (en) | 1988-07-27 |
GB2204464A true GB2204464A (en) | 1988-11-09 |
Family
ID=10605664
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB868624514A Pending GB8624514D0 (en) | 1986-10-13 | 1986-10-13 | Telephone systems |
GB08813681A Pending GB2204464A (en) | 1986-10-13 | 1987-10-13 | Telephone system |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB868624514A Pending GB8624514D0 (en) | 1986-10-13 | 1986-10-13 | Telephone systems |
Country Status (2)
Country | Link |
---|---|
GB (2) | GB8624514D0 (en) |
WO (1) | WO1988002964A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0420204A3 (en) * | 1989-09-28 | 1993-01-27 | Siemens Aktiengesellschaft | Method for the transmission of subscriber data from one secret subscriber to another in communication exchanges |
DE19914553A1 (en) * | 1999-03-31 | 2000-10-05 | Helmuth Eberst | Multifunction display device for telephone |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2106751A (en) * | 1981-09-03 | 1983-04-13 | Micro Tek Inc | Security identification system using pulse code modulation |
US4443664A (en) * | 1982-07-02 | 1984-04-17 | Rca Corporation | Telephone station incorporating exchange message system |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3429457A1 (en) * | 1984-08-10 | 1986-02-20 | Atis Assmann GmbH, 6380 Bad Homburg | METHOD FOR IDENTIFYING SELECTED OR SELECTED TERMINAL DEVICES AND DEVICE FOR CARRYING OUT THE METHOD |
-
1986
- 1986-10-13 GB GB868624514A patent/GB8624514D0/en active Pending
-
1987
- 1987-10-13 WO PCT/GB1987/000717 patent/WO1988002964A1/en unknown
- 1987-10-13 GB GB08813681A patent/GB2204464A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2106751A (en) * | 1981-09-03 | 1983-04-13 | Micro Tek Inc | Security identification system using pulse code modulation |
US4443664A (en) * | 1982-07-02 | 1984-04-17 | Rca Corporation | Telephone station incorporating exchange message system |
Non-Patent Citations (1)
Title |
---|
WO A 86/01358 * |
Also Published As
Publication number | Publication date |
---|---|
WO1988002964A1 (en) | 1988-04-21 |
GB8624514D0 (en) | 1986-11-19 |
GB8813681D0 (en) | 1988-07-27 |
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