GB1442868A - Apparatus for testing pulse characterisitics of telephone dials - Google Patents
Apparatus for testing pulse characterisitics of telephone dialsInfo
- Publication number
- GB1442868A GB1442868A GB3508774A GB3508774A GB1442868A GB 1442868 A GB1442868 A GB 1442868A GB 3508774 A GB3508774 A GB 3508774A GB 3508774 A GB3508774 A GB 3508774A GB 1442868 A GB1442868 A GB 1442868A
- Authority
- GB
- United Kingdom
- Prior art keywords
- characterisitics
- testing pulse
- telephone dials
- dials
- telephone
- 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
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/24—Arrangements for testing
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19742437114 DE2437114A1 (de) | 1974-08-01 | 1974-08-01 | Pruefer fuer impulsparameter von fernsprechapparat-nummernschaltern |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1442868A true GB1442868A (en) | 1976-07-14 |
Family
ID=5922183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3508774A Expired GB1442868A (en) | 1974-08-01 | 1974-08-08 | Apparatus for testing pulse characterisitics of telephone dials |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE2437114A1 (enExample) |
| FR (1) | FR2284234A1 (enExample) |
| GB (1) | GB1442868A (enExample) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2356324A1 (fr) * | 1976-06-25 | 1978-01-20 | Constr Telephoniques | Dispositif de controle pour poste telephonique |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2877405A (en) * | 1954-04-29 | 1959-03-10 | Western Electric Co | Apparatus for testing articles |
| US2935679A (en) * | 1956-09-11 | 1960-05-03 | Western Electric Co | Test set for measuring shunt delay times of telephone dials |
| NL130510C (enExample) * | 1959-10-24 | |||
| DE1165158B (de) * | 1962-01-18 | 1964-03-12 | Standard Elektrik Lorenz Ag | Schaltungsanordnung zur Toleranzpruefung der Impuls- und Pausenschritte von Impulsreihen |
-
1974
- 1974-08-01 DE DE19742437114 patent/DE2437114A1/de active Pending
- 1974-08-08 GB GB3508774A patent/GB1442868A/en not_active Expired
- 1974-09-09 FR FR7430474A patent/FR2284234A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2284234A1 (fr) | 1976-04-02 |
| FR2284234B1 (enExample) | 1977-03-25 |
| DE2437114A1 (de) | 1976-02-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |