BE677734A - - Google Patents
Info
- Publication number
- BE677734A BE677734A BE677734DA BE677734A BE 677734 A BE677734 A BE 677734A BE 677734D A BE677734D A BE 677734DA BE 677734 A BE677734 A BE 677734A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/36—Charging, billing or metering arrangements for party-lines
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/68—Circuit arrangements for preventing eavesdropping
- H04M1/70—Lock-out or secrecy arrangements in party-line systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
- H04Q5/24—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange for two-party-line systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Interface Circuits In Exchanges (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES95881A DE1223428B (de) | 1965-03-11 | 1965-03-11 | Schaltungsanordnung fuer Fernmelde-, insbesondere Fernsprechanlagen mit Zweier-anschluessen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE677734A true BE677734A (en:Method) | 1966-09-12 |
Family
ID=7519677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE677734D BE677734A (en:Method) | 1965-03-11 | 1966-03-11 |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT257701B (en:Method) |
| BE (1) | BE677734A (en:Method) |
| CH (1) | CH442437A (en:Method) |
| DE (1) | DE1223428B (en:Method) |
| GB (1) | GB1078795A (en:Method) |
| NL (1) | NL6602085A (en:Method) |
| SE (1) | SE311385B (en:Method) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4310723A (en) * | 1980-08-01 | 1982-01-12 | Svala Carl G | Party line apparatus |
| US4332983A (en) * | 1980-10-27 | 1982-06-01 | Hosein Vakili | Telephone privacy controller |
| US4371755A (en) * | 1981-01-09 | 1983-02-01 | Bell Telephone Laboratories, Incorporated | Bridge lifter circuit |
-
1965
- 1965-03-11 DE DES95881A patent/DE1223428B/de active Pending
-
1966
- 1966-02-17 NL NL6602085A patent/NL6602085A/xx unknown
- 1966-03-09 CH CH336566A patent/CH442437A/de unknown
- 1966-03-09 AT AT220566A patent/AT257701B/de active
- 1966-03-10 GB GB1048766A patent/GB1078795A/en not_active Expired
- 1966-03-11 BE BE677734D patent/BE677734A/xx unknown
- 1966-03-11 SE SE330266A patent/SE311385B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH442437A (de) | 1967-08-31 |
| NL6602085A (en:Method) | 1966-09-12 |
| GB1078795A (en) | 1967-08-09 |
| SE311385B (en:Method) | 1969-06-09 |
| DE1223428B (de) | 1966-08-25 |
| AT257701B (de) | 1967-10-25 |