ZA816705B - Subscriber connection circuit for coin operated telephones - Google Patents
Subscriber connection circuit for coin operated telephonesInfo
- Publication number
- ZA816705B ZA816705B ZA816705A ZA816705A ZA816705B ZA 816705 B ZA816705 B ZA 816705B ZA 816705 A ZA816705 A ZA 816705A ZA 816705 A ZA816705 A ZA 816705A ZA 816705 B ZA816705 B ZA 816705B
- Authority
- ZA
- South Africa
- Prior art keywords
- connection circuit
- subscriber connection
- coin operated
- operated telephones
- telephones
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M17/00—Prepayment of wireline communication systems, wireless communication systems or telephone systems
- H04M17/02—Coin-freed or check-freed systems, e.g. mobile- or card-operated phones, public telephones or booths
- H04M17/023—Circuit arrangements
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3036657A DE3036657C2 (en) | 1980-09-29 | 1980-09-29 | Subscriber connection circuit for coin-operated telephones with switching means for determining the individual operating states to be monitored |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA816705B true ZA816705B (en) | 1982-09-29 |
Family
ID=6113103
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA816705A ZA816705B (en) | 1980-09-29 | 1981-09-28 | Subscriber connection circuit for coin operated telephones |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE3036657C2 (en) |
ZA (1) | ZA816705B (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2547880C2 (en) * | 1975-10-25 | 1981-09-24 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Circuit arrangement for recognizing the operating states of a subscriber line and for connecting and disabling calls in telephone exchanges |
CH634187A5 (en) * | 1978-10-10 | 1983-01-14 | Sodeco Compteurs De Geneve | Detector circuit for telephone networks |
-
1980
- 1980-09-29 DE DE3036657A patent/DE3036657C2/en not_active Expired
-
1981
- 1981-09-28 ZA ZA816705A patent/ZA816705B/en unknown
Also Published As
Publication number | Publication date |
---|---|
DE3036657A1 (en) | 1982-06-16 |
DE3036657C2 (en) | 1985-09-05 |
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