NL6900963A - - Google Patents
Info
- Publication number
- NL6900963A NL6900963A NL6900963A NL6900963A NL6900963A NL 6900963 A NL6900963 A NL 6900963A NL 6900963 A NL6900963 A NL 6900963A NL 6900963 A NL6900963 A NL 6900963A NL 6900963 A NL6900963 A NL 6900963A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/64—Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations
- H04M1/65—Recording arrangements for recording a message from the calling party
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
- H04M1/663—Preventing unauthorised calls to a telephone set
- H04M1/665—Preventing unauthorised calls to a telephone set by checking the validity of a code
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Telephonic Communication Services (AREA)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6900963A NL6900963A (cg-RX-API-DMAC7.html) | 1969-01-21 | 1969-01-21 | |
| CH67570A CH527530A (de) | 1969-01-21 | 1970-01-19 | Schaltung in einer mit einem automatischen Antwortgeber versehenen Teilnehmerstation in einer Fernsprechanlage |
| DE19702002160 DE2002160A1 (de) | 1969-01-21 | 1970-01-19 | Waehlschaltung |
| GB275570A GB1306701A (en) | 1969-01-21 | 1970-01-20 | Telephone selection circuit |
| FR7002187A FR2028833A1 (cg-RX-API-DMAC7.html) | 1969-01-21 | 1970-01-20 | |
| BE744748D BE744748A (fr) | 1969-01-21 | 1970-01-21 | Circuit selectif |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6900963A NL6900963A (cg-RX-API-DMAC7.html) | 1969-01-21 | 1969-01-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL6900963A true NL6900963A (cg-RX-API-DMAC7.html) | 1970-07-23 |
Family
ID=19805922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL6900963A NL6900963A (cg-RX-API-DMAC7.html) | 1969-01-21 | 1969-01-21 |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE744748A (cg-RX-API-DMAC7.html) |
| CH (1) | CH527530A (cg-RX-API-DMAC7.html) |
| DE (1) | DE2002160A1 (cg-RX-API-DMAC7.html) |
| FR (1) | FR2028833A1 (cg-RX-API-DMAC7.html) |
| GB (1) | GB1306701A (cg-RX-API-DMAC7.html) |
| NL (1) | NL6900963A (cg-RX-API-DMAC7.html) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3793487A (en) * | 1971-11-22 | 1974-02-19 | J Kilby | System for screening telephone calls |
| JPS62163445A (ja) * | 1986-01-14 | 1987-07-20 | Mitsubishi Electric Corp | 電話切換装置 |
-
1969
- 1969-01-21 NL NL6900963A patent/NL6900963A/xx not_active Application Discontinuation
-
1970
- 1970-01-19 CH CH67570A patent/CH527530A/de not_active IP Right Cessation
- 1970-01-19 DE DE19702002160 patent/DE2002160A1/de active Pending
- 1970-01-20 GB GB275570A patent/GB1306701A/en not_active Expired
- 1970-01-20 FR FR7002187A patent/FR2028833A1/fr not_active Withdrawn
- 1970-01-21 BE BE744748D patent/BE744748A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE744748A (fr) | 1970-07-01 |
| GB1306701A (en) | 1973-02-14 |
| CH527530A (de) | 1972-08-31 |
| DE2002160A1 (de) | 1970-09-03 |
| FR2028833A1 (cg-RX-API-DMAC7.html) | 1970-10-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BV | The patent application has lapsed |