BE776636A - Systeme de commutation telephonique pour appels de service requerant l'assistance d'une operatrice - Google Patents
Systeme de commutation telephonique pour appels de service requerant l'assistance d'une operatriceInfo
- Publication number
- BE776636A BE776636A BE776636A BE776636A BE776636A BE 776636 A BE776636 A BE 776636A BE 776636 A BE776636 A BE 776636A BE 776636 A BE776636 A BE 776636A BE 776636 A BE776636 A BE 776636A
- Authority
- BE
- Belgium
- Prior art keywords
- assistance
- operator
- switching system
- telephone switching
- service calls
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
- H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Exchange Systems With Centralized Control (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US9880170A | 1970-12-16 | 1970-12-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE776636A true BE776636A (fr) | 1972-04-04 |
Family
ID=22270961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE776636A BE776636A (fr) | 1970-12-16 | 1971-12-13 | Systeme de commutation telephonique pour appels de service requerant l'assistance d'une operatrice |
Country Status (7)
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4007339A (en) * | 1975-11-28 | 1977-02-08 | Bell Telephone Laboratories, Incorporated | Arrangement serving operator assistance calls requiring routing back to originating offices |
| US4160129A (en) * | 1977-05-03 | 1979-07-03 | Tdx Systems, Inc. | Telephone communications control system having a plurality of remote switching units |
| GB8424062D0 (en) * | 1984-09-24 | 1984-10-31 | Mackley M R | Oriented polymer films |
| GB8607519D0 (en) * | 1986-03-26 | 1986-05-21 | Mackley M R | Polymer films & tapes |
| US6704563B1 (en) | 1998-08-11 | 2004-03-09 | Boston Communications Group, Inc. | Systems and methods for prerating costs for a communication event |
| US7187928B1 (en) | 1998-11-24 | 2007-03-06 | Boston Communications Group, Inc. | Call delivery systems for roaming prepaid subscribers |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3122611A (en) * | 1960-09-20 | 1964-02-25 | American Telephone & Telegraph | Rate determining equipment |
| US3307150A (en) * | 1962-11-16 | 1967-02-28 | Stromberg Carlson Corp | Queue store |
-
1970
- 1970-12-16 US US00098801A patent/US3731000A/en not_active Expired - Lifetime
-
1971
- 1971-08-26 CA CA121,421A patent/CA953810A/en not_active Expired
- 1971-12-13 BE BE776636A patent/BE776636A/xx unknown
- 1971-12-14 DE DE19712161989 patent/DE2161989A1/de active Pending
- 1971-12-15 GB GB5821771A patent/GB1360477A/en not_active Expired
- 1971-12-15 FR FR7145156A patent/FR2118676A5/fr not_active Expired
- 1971-12-16 JP JP10158271A patent/JPS4712851A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| GB1360477A (en) | 1974-07-17 |
| CA953810A (en) | 1974-08-27 |
| JPS4712851A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1972-06-29 |
| FR2118676A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1972-07-28 |
| DE2161989A1 (de) | 1972-07-06 |
| US3731000A (en) | 1973-05-01 |
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