NL290910A - - Google Patents
Info
- Publication number
- NL290910A NL290910A NL290910DA NL290910A NL 290910 A NL290910 A NL 290910A NL 290910D A NL290910D A NL 290910DA NL 290910 A NL290910 A NL 290910A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/40—Applications of speech amplifiers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE357762 | 1962-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL290910A true NL290910A (en:Method) |
Family
ID=20262411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL290910D NL290910A (en:Method) | 1962-03-30 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3306982A (en:Method) |
| BE (1) | BE630382A (en:Method) |
| DE (1) | DE1230863B (en:Method) |
| DK (1) | DK108647C (en:Method) |
| GB (1) | GB1030601A (en:Method) |
| NL (1) | NL290910A (en:Method) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3798379A (en) * | 1971-09-22 | 1974-03-19 | Tel Ind Inc | Connector terminal dial repulser |
| JPS4917111A (en:Method) * | 1972-05-22 | 1974-02-15 | ||
| US5206902A (en) * | 1991-04-01 | 1993-04-27 | At&T Bell Laboratories | Network signaling arrangement for controlling tandem network functions |
| US5471527A (en) * | 1993-12-02 | 1995-11-28 | Dsc Communications Corporation | Voice enhancement system and method |
| US5802164A (en) * | 1995-12-22 | 1998-09-01 | At&T Corp | Systems and methods for controlling telephone sound enhancement on a per call basis |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL44236C (en:Method) * | 1935-05-16 | |||
| BE475750A (en:Method) * | 1939-10-04 | |||
| US2300415A (en) * | 1941-04-26 | 1942-11-03 | Bell Telephone Labor Inc | Transmission control |
| BE511541A (en:Method) * | 1951-05-21 | |||
| DE1000465B (de) * | 1954-06-09 | 1957-01-10 | Siemens Ag | Anordnung zum Verbinden von Zweidraht-Fernwahlleitungen ohne Verstaerker mit Vierdraht-Fernwahlleitungen mit Verstaerkern |
| DE1008784B (de) * | 1954-06-09 | 1957-05-23 | Siemens Ag | Anordnung fuer die zweidraehtige Durchschaltung ohne Verstaerker mit Vierdraht-Fernwahlleitungen mit Verstaerkern |
| DE1107719B (de) * | 1960-01-27 | 1961-05-31 | Siemens Ag | Schaltungsanordnung fuer Fernwahlnetze mit durch Gabeln gekuppelten Zweidraht-Vierdraht-Abschnitten |
-
0
- BE BE630382D patent/BE630382A/xx unknown
- NL NL290910D patent/NL290910A/xx unknown
-
1963
- 1963-03-15 US US265546A patent/US3306982A/en not_active Expired - Lifetime
- 1963-03-28 DE DET23730A patent/DE1230863B/de active Pending
- 1963-03-29 DK DK144863AA patent/DK108647C/da active
- 1963-04-01 GB GB12907/63A patent/GB1030601A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1230863B (de) | 1966-12-22 |
| BE630382A (en:Method) | |
| GB1030601A (en) | 1966-05-25 |
| DK108647C (da) | 1968-01-22 |
| US3306982A (en) | 1967-02-28 |