IT1099861B - Apparecchiatura per la copertura di chiamate telefoniche - Google Patents
Apparecchiatura per la copertura di chiamate telefonicheInfo
- Publication number
- IT1099861B IT1099861B IT29243/78A IT2924378A IT1099861B IT 1099861 B IT1099861 B IT 1099861B IT 29243/78 A IT29243/78 A IT 29243/78A IT 2924378 A IT2924378 A IT 2924378A IT 1099861 B IT1099861 B IT 1099861B
- Authority
- IT
- Italy
- Prior art keywords
- equipment
- telephone calls
- covering telephone
- covering
- calls
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/54—Arrangements for diverting calls for one subscriber to another predetermined subscriber
- H04M3/546—Arrangements for diverting calls for one subscriber to another predetermined subscriber in private branch exchanges
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
- H04M9/005—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line
- H04M9/007—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line wherein the key telephone sets are star-connected to a central unit by a limited number of lines
-
- 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)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Telephonic Communication Services (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/847,217 US4150257A (en) | 1977-10-31 | 1977-10-31 | Communication system call coverage arrangements |
Publications (2)
Publication Number | Publication Date |
---|---|
IT7829243A0 IT7829243A0 (it) | 1978-10-30 |
IT1099861B true IT1099861B (it) | 1985-09-28 |
Family
ID=25300095
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT29243/78A IT1099861B (it) | 1977-10-31 | 1978-10-30 | Apparecchiatura per la copertura di chiamate telefoniche |
Country Status (15)
Country | Link |
---|---|
US (1) | US4150257A (it) |
JP (1) | JPS6410150B2 (it) |
BE (1) | BE871658A (it) |
CA (1) | CA1090908A (it) |
CH (1) | CH648973A5 (it) |
DE (1) | DE2857138C1 (it) |
ES (1) | ES474719A1 (it) |
FR (1) | FR2407623A1 (it) |
GB (1) | GB2023967B (it) |
HK (1) | HK40584A (it) |
IL (1) | IL55799A (it) |
IT (1) | IT1099861B (it) |
NL (1) | NL189741C (it) |
SE (1) | SE427789B (it) |
WO (1) | WO1979000250A1 (it) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4278844A (en) * | 1979-03-26 | 1981-07-14 | Bell Telephone Laboratories, Incorporated | Communication system selective call screening arrangement |
US4296282A (en) * | 1980-06-30 | 1981-10-20 | Bell Telephone Laboratories, Incorporated | Incoming call identification arrangement |
US4436962A (en) * | 1982-03-30 | 1984-03-13 | Bell Telephone Laboratories, Incorporated | Call coverage arrangement |
US4451705A (en) * | 1982-05-28 | 1984-05-29 | Bell Telephone Laboratories, Incorporated | Call completion circuit and method |
US4539437A (en) * | 1982-11-30 | 1985-09-03 | At&T Bell Laboratories | Stored program power control system for improving energy efficiency for telephone sets connected into a local telephone communications system |
US4631364A (en) * | 1984-02-23 | 1986-12-23 | At&T Information Systems Inc. | Communication system having dynamically assigned station set buttons |
DE3688471T2 (de) * | 1985-03-20 | 1993-12-09 | Nippon Electric Co | Tastengegensprechsystem. |
NL8601982A (nl) * | 1986-08-04 | 1988-03-01 | Philips Nv | Digitaal telecommunicatiestelsel met een centrale en een groep van terminals met multi-access. |
DE3634782C1 (en) * | 1986-10-11 | 1988-08-18 | Telefonbau & Normalzeit Gmbh | Operator's or enquiry station for a telephone switching system, particularly a multiple broker's facility |
DE3720186C2 (de) * | 1987-06-16 | 1994-07-21 | Siemens Ag | Verfahren für eine rechnergesteuerte Vermittlungseinrichtung, insbesondere für eine sogenannte KEY-Fernsprechvermittlungseinrichtung |
ES2050679T3 (es) * | 1987-06-16 | 1994-06-01 | Siemens Ag | Procedimiento para una instalacion de conmutacion controlada por ordenador, especialmente para una llamada instalacion de conmutacion telefonica-key con la posibilidad de transmision de llamada. |
FR2620887B1 (fr) * | 1987-09-18 | 1990-01-19 | Applic Electro Tech Avance | Installation telephonique a liaison hertzienne |
DE3888181D1 (de) * | 1988-09-27 | 1994-04-07 | Siemens Ag | Verfahren zur Übernahme von Anrufen. |
ATE63030T1 (de) * | 1988-09-28 | 1991-05-15 | Siemens Ag | Verfahren zum heranziehen von anrufen, die von einer kommunikationsanlage an ein oder mehrere reihenanlagen-kommunikationsendgeraete signalisiert werden. |
US4879743A (en) * | 1988-10-03 | 1989-11-07 | American Telephone And Telegraph Company | PBX and adjunct using multi-frequency tones for communication therebetween |
ES2048046B1 (es) * | 1991-08-30 | 1996-08-01 | Telefonica Nacional Espana Co | Equipo adaptador para extension distante de centralita privada de abonado |
US5309028A (en) * | 1992-07-14 | 1994-05-03 | At&T Bell Laboratories | Call coverage arrangement in an ISDN switching system |
US5530931A (en) * | 1994-10-20 | 1996-06-25 | Telefonaktiebolaget L M Ericsson | Method and apparatus for providing a look ahead feature for enhanced call forwarding in a telecommunications system |
US5521970A (en) * | 1995-03-29 | 1996-05-28 | At&T Corp. | Arrangement for extending call-coverage across a network of nodes |
US5790173A (en) * | 1995-07-20 | 1998-08-04 | Bell Atlantic Network Services, Inc. | Advanced intelligent network having digital entertainment terminal or the like interacting with integrated service control point |
US5867568A (en) * | 1996-08-22 | 1999-02-02 | Lucent Technologies Inc. | Coverage of redirected calls |
US6359977B1 (en) * | 1999-05-06 | 2002-03-19 | Thomson Licensing S.A. | Telephone port with automatic detection and secure |
US8503640B1 (en) | 2004-09-01 | 2013-08-06 | Shoretel, Inc. | Extension monitoring in a distributed telephony system |
US8879707B2 (en) * | 2005-01-14 | 2014-11-04 | Avaya Inc. | Private branch exchange that manages interactions between associated telecommunications terminals |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1762398B1 (de) * | 1968-06-10 | 1970-04-23 | Siemens Ag | Anordnung und Verfahren zur gegenseitigen UEbernahme von Anrufen |
US3626109A (en) * | 1969-11-26 | 1971-12-07 | Stromberg Carlson Corp | Call-forwarding process |
BE790108A (fr) * | 1971-10-15 | 1973-02-01 | Western Electric Co | Reseau de commutation |
DE2348233B1 (de) * | 1973-09-25 | 1975-01-09 | Siemens Ag | Schaltungsanordnung zur Anrufsteuerung in Fernsprech-,insbesondere Linienwaehleranlagen |
US4046972A (en) * | 1976-10-27 | 1977-09-06 | Bell Telephone Laboratories, Incorporated | Key telephone station set circuit |
-
1977
- 1977-10-31 US US05/847,217 patent/US4150257A/en not_active Expired - Lifetime
-
1978
- 1978-10-25 JP JP54500073A patent/JPS6410150B2/ja not_active Expired
- 1978-10-25 GB GB7921649A patent/GB2023967B/en not_active Expired
- 1978-10-25 CH CH6126/79A patent/CH648973A5/de not_active IP Right Cessation
- 1978-10-25 DE DE2857138A patent/DE2857138C1/de not_active Expired
- 1978-10-25 WO PCT/US1978/000120 patent/WO1979000250A1/en unknown
- 1978-10-26 IL IL55799A patent/IL55799A/xx unknown
- 1978-10-27 CA CA314,637A patent/CA1090908A/en not_active Expired
- 1978-10-30 NL NLAANVRAGE7810802,A patent/NL189741C/xx not_active IP Right Cessation
- 1978-10-30 BE BE191442A patent/BE871658A/xx not_active IP Right Cessation
- 1978-10-30 IT IT29243/78A patent/IT1099861B/it active
- 1978-10-31 ES ES474719A patent/ES474719A1/es not_active Expired
- 1978-10-31 FR FR7830875A patent/FR2407623A1/fr active Granted
-
1979
- 1979-06-15 SE SE7905299A patent/SE427789B/sv not_active IP Right Cessation
-
1984
- 1984-05-10 HK HK405/84A patent/HK40584A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
GB2023967B (en) | 1982-08-25 |
JPS6410150B2 (it) | 1989-02-21 |
NL189741C (nl) | 1993-07-01 |
NL189741B (nl) | 1993-02-01 |
HK40584A (en) | 1984-05-18 |
ES474719A1 (es) | 1979-04-01 |
JPS54500090A (it) | 1979-12-13 |
FR2407623A1 (fr) | 1979-05-25 |
SE7905299L (sv) | 1979-06-15 |
DE2857138C1 (de) | 1985-06-20 |
US4150257A (en) | 1979-04-17 |
IL55799A0 (en) | 1978-12-17 |
IT7829243A0 (it) | 1978-10-30 |
CA1090908A (en) | 1980-12-02 |
GB2023967A (en) | 1980-01-03 |
SE427789B (sv) | 1983-05-02 |
CH648973A5 (de) | 1985-04-15 |
NL7810802A (nl) | 1979-05-02 |
BE871658A (fr) | 1979-02-15 |
FR2407623B1 (it) | 1983-07-18 |
IL55799A (en) | 1980-12-31 |
WO1979000250A1 (en) | 1979-05-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19971028 |