IT1086951B - Unita' di segnalazione per centrale telefonica - Google Patents
Unita' di segnalazione per centrale telefonicaInfo
- Publication number
- IT1086951B IT1086951B IT27753/77A IT2775377A IT1086951B IT 1086951 B IT1086951 B IT 1086951B IT 27753/77 A IT27753/77 A IT 27753/77A IT 2775377 A IT2775377 A IT 2775377A IT 1086951 B IT1086951 B IT 1086951B
- Authority
- IT
- Italy
- Prior art keywords
- unit
- telephone control
- control unit
- signaling
- signaling unit
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/39—Signalling arrangements; Manipulation of signalling currents using coded pulse groups
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Time-Division Multiplex Systems (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7628776A FR2365922A1 (fr) | 1976-09-24 | 1976-09-24 | Unite de signalisation pour central telephonique |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1086951B true IT1086951B (it) | 1985-05-31 |
Family
ID=9178055
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT27753/77A IT1086951B (it) | 1976-09-24 | 1977-09-21 | Unita' di segnalazione per centrale telefonica |
Country Status (6)
Country | Link |
---|---|
US (1) | US4129756A (it) |
BE (1) | BE858935A (it) |
DE (1) | DE2742929A1 (it) |
ES (1) | ES462574A1 (it) |
FR (1) | FR2365922A1 (it) |
IT (1) | IT1086951B (it) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2455823A1 (fr) * | 1979-05-04 | 1980-11-28 | Cit Alcatel | Dispositif de raccordement de multiplex dans un central de commutation temporelle |
ZA804387B (en) * | 1979-08-10 | 1981-07-29 | Plessey Co Ltd | Channel zero switching arrangements for digital telecommunication exchanges |
FR2478415B1 (fr) * | 1980-03-11 | 1986-12-05 | Thomson Csf Mat Tel | Systeme de commutation de signalisation dans un reseau de commutation temporelle, et reseau de commutation temporelle comportant un tel systeme |
FR2551939B1 (fr) * | 1983-09-14 | 1985-10-11 | Cit Alcatel | Dispositif de transfert et de traitement de voies de donnees ou de signalisation d'un ensemble de lignes multiplex |
ES2105934B1 (es) * | 1994-02-25 | 1998-07-16 | Telefonica Nacional Espana Co | Circuito hibrido universal de linea. |
US5748876A (en) * | 1995-12-29 | 1998-05-05 | Mci Communications Corporation | System and method for testing acoustic modems with semantically encoded waveforms |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3743938A (en) * | 1971-08-10 | 1973-07-03 | Gen Datacomm Ind Inc | Closed data loop test apparatus for data transmission modem |
US4039751A (en) * | 1972-04-24 | 1977-08-02 | General Datacomm Industries, Inc. | Method and apparatus for closed loop testing of first and second modulators and demodulators |
US3931476A (en) * | 1974-01-03 | 1976-01-06 | Action Communication Systems, Inc. | Method and system for automatically controlling the connection of inter-city telephone calls at a users facility |
US3985972A (en) * | 1974-08-08 | 1976-10-12 | Rolin Robert J | Telephone call restrictor |
US4002847A (en) * | 1975-12-29 | 1977-01-11 | Bell Telephone Laboratories, Incorporated | Fault isolation in a serial-looped transmission system |
-
1976
- 1976-09-24 FR FR7628776A patent/FR2365922A1/fr active Granted
-
1977
- 1977-09-20 US US05/834,874 patent/US4129756A/en not_active Expired - Lifetime
- 1977-09-21 IT IT27753/77A patent/IT1086951B/it active
- 1977-09-22 BE BE181102A patent/BE858935A/xx unknown
- 1977-09-23 ES ES462574A patent/ES462574A1/es not_active Expired
- 1977-09-23 DE DE19772742929 patent/DE2742929A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
FR2365922B1 (it) | 1979-01-12 |
US4129756A (en) | 1978-12-12 |
BE858935A (fr) | 1978-01-16 |
DE2742929A1 (de) | 1978-03-30 |
FR2365922A1 (fr) | 1978-04-21 |
ES462574A1 (es) | 1978-06-16 |
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