DE2332244C2 - Anrufbeantwortungsanordnung - Google Patents
AnrufbeantwortungsanordnungInfo
- Publication number
- DE2332244C2 DE2332244C2 DE19732332244 DE2332244A DE2332244C2 DE 2332244 C2 DE2332244 C2 DE 2332244C2 DE 19732332244 DE19732332244 DE 19732332244 DE 2332244 A DE2332244 A DE 2332244A DE 2332244 C2 DE2332244 C2 DE 2332244C2
- Authority
- DE
- Germany
- Prior art keywords
- message
- signal
- call
- transistor
- subscriber
- 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
- 230000004044 response Effects 0.000 claims description 11
- 206010059875 Device ineffective Diseases 0.000 claims 1
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 claims 1
- 230000002265 prevention Effects 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 description 18
- 239000003990 capacitor Substances 0.000 description 13
- 230000003111 delayed effect Effects 0.000 description 7
- 230000000994 depressogenic effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- 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)
- Telephonic Communication Services (AREA)
- Prepayment Telephone Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US26649072A | 1972-06-26 | 1972-06-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2332244A1 DE2332244A1 (de) | 1974-01-17 |
DE2332244C2 true DE2332244C2 (de) | 1984-04-05 |
Family
ID=23014788
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19732332244 Expired DE2332244C2 (de) | 1972-06-26 | 1973-06-25 | Anrufbeantwortungsanordnung |
Country Status (8)
Country | Link |
---|---|
JP (1) | JPS4952506A (enrdf_load_stackoverflow) |
BE (1) | BE801478A (enrdf_load_stackoverflow) |
CA (1) | CA984983A (enrdf_load_stackoverflow) |
DE (1) | DE2332244C2 (enrdf_load_stackoverflow) |
GB (1) | GB1432983A (enrdf_load_stackoverflow) |
IT (1) | IT986215B (enrdf_load_stackoverflow) |
NL (1) | NL7308862A (enrdf_load_stackoverflow) |
SE (1) | SE382293B (enrdf_load_stackoverflow) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6233328B1 (en) | 1995-03-30 | 2001-05-15 | Michael Wolf | Door intercom |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5399802A (en) * | 1977-02-14 | 1978-08-31 | Nippon Telegr & Teleph Corp <Ntt> | Specific subscriber calling equipment of automatic answering telephone set |
JPS53132911A (en) * | 1977-04-26 | 1978-11-20 | Iwatsu Electric Co Ltd | Telephone set |
JPS53146511A (en) * | 1977-05-26 | 1978-12-20 | Toyo Communication Equip | Caller identifying telephone set |
JPS5648160U (enrdf_load_stackoverflow) * | 1980-09-04 | 1981-04-28 | ||
DE3405014A1 (de) * | 1984-02-13 | 1985-08-14 | Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt | Verfahren fuer den betrieb eines telefon-anrufbeantworters |
GB2183125B (en) * | 1985-10-10 | 1989-11-29 | Microcompass Ltd | Improvements to communication apparatus |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1283074A (fr) * | 1961-03-08 | 1962-01-27 | Installation téléphonique d'abonné | |
DE1437906B2 (de) * | 1965-04-17 | 1970-03-26 | Blessing, Dipl.-Kfm. Dr. Gerhard, 7336 Uhingen | Schaltungsanordnung für eine Zusatzeinrichtung an Fernsprechteilnehmerstellen |
JPS4831810A (enrdf_load_stackoverflow) * | 1971-08-30 | 1973-04-26 |
-
1973
- 1973-06-11 CA CA173,733A patent/CA984983A/en not_active Expired
- 1973-06-21 GB GB2952673A patent/GB1432983A/en not_active Expired
- 1973-06-25 SE SE7308899A patent/SE382293B/xx unknown
- 1973-06-25 IT IT5102273A patent/IT986215B/it active
- 1973-06-25 DE DE19732332244 patent/DE2332244C2/de not_active Expired
- 1973-06-25 JP JP7160573A patent/JPS4952506A/ja active Pending
- 1973-06-26 BE BE132756A patent/BE801478A/xx not_active IP Right Cessation
- 1973-06-26 NL NL7308862A patent/NL7308862A/xx not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6233328B1 (en) | 1995-03-30 | 2001-05-15 | Michael Wolf | Door intercom |
Also Published As
Publication number | Publication date |
---|---|
SE382293B (sv) | 1976-01-19 |
GB1432983A (en) | 1976-04-22 |
CA984983A (en) | 1976-03-02 |
NL7308862A (enrdf_load_stackoverflow) | 1973-12-28 |
JPS4952506A (enrdf_load_stackoverflow) | 1974-05-22 |
IT986215B (it) | 1975-01-20 |
DE2332244A1 (de) | 1974-01-17 |
BE801478A (fr) | 1973-10-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OD | Request for examination | ||
8128 | New person/name/address of the agent |
Representative=s name: PRINZ, E., DIPL.-ING. LEISER, G., DIPL.-ING., PAT. |
|
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |