IE62326B1 - Improvements in or relating to a private automatic branch exchange (pabx) telephone system - Google Patents

Improvements in or relating to a private automatic branch exchange (pabx) telephone system

Info

Publication number: IE62326B1
Authority: IE; Ireland
Prior art keywords: circuit; line; dtmf; pabx; microcomputer
Prior art date: 1989-09-18

Application number

IE297089A

Other languages

English (en)

Other versions

IE892970A1 (en

Inventor

Stephen Augustine Mcmahon

Declan Gibbons

Original Assignee

Oransay Ltd

Priority date (The priority date 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 date listed.)

1989-09-18

Filing date

1989-09-18

Publication date

1995-01-25

1989-09-18 Application filed by Oransay Ltd filed Critical Oransay Ltd

1989-09-18 Priority to IE297089A priority Critical patent/IE62326B1/en

1989-11-20 Priority to BE8901238A priority patent/BE1001879A7/fr

1990-09-13 Priority to GB9020040A priority patent/GB2237702B/en

1991-03-27 Publication of IE892970A1 publication Critical patent/IE892970A1/en

1995-01-25 Publication of IE62326B1 publication Critical patent/IE62326B1/en

Links

239000011159 matrix material Substances 0.000 claims abstract description 35
230000001939 inductive effect Effects 0.000 claims abstract description 6
230000009977 dual effect Effects 0.000 claims abstract description 4
239000000872 buffer Substances 0.000 claims description 17
239000003990 capacitor Substances 0.000 claims description 17
230000011664 signaling Effects 0.000 claims description 12
238000004458 analytical method Methods 0.000 claims description 4
238000010791 quenching Methods 0.000 claims description 4
238000003780 insertion Methods 0.000 claims description 3
230000037431 insertion Effects 0.000 claims description 3
238000004321 preservation Methods 0.000 claims description 2
240000007320 Pinus strobus Species 0.000 description 5
238000010586 diagram Methods 0.000 description 5
238000001514 detection method Methods 0.000 description 4
238000000034 method Methods 0.000 description 4
230000001105 regulatory effect Effects 0.000 description 3
239000013078 crystal Substances 0.000 description 2
230000006870 function Effects 0.000 description 2
230000008569 process Effects 0.000 description 2
229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
230000009471 action Effects 0.000 description 1
230000002238 attenuated effect Effects 0.000 description 1
230000000903 blocking effect Effects 0.000 description 1
230000008859 change Effects 0.000 description 1
230000001143 conditioned effect Effects 0.000 description 1
125000004122 cyclic group Chemical group 0.000 description 1
230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
238000002347 injection Methods 0.000 description 1
239000007924 injection Substances 0.000 description 1
238000004353 relayed correlation spectroscopy Methods 0.000 description 1
239000004065 semiconductor Substances 0.000 description 1
230000009466 transformation Effects 0.000 description 1

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
- H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
- H04Q3/625—Arrangements in the private branch exchange

Landscapes

Physics & Mathematics (AREA)
Astronomy & Astrophysics (AREA)
General Physics & Mathematics (AREA)
Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Sub-Exchange Stations And Push- Button Telephones (AREA)

IE297089A 1989-09-18 1989-09-18 Improvements in or relating to a private automatic branch exchange (pabx) telephone system IE62326B1 (en)

Priority Applications (3)

Application Number	Priority Date	Filing Date	Title
IE297089A IE62326B1 (en)	1989-09-18	1989-09-18	Improvements in or relating to a private automatic branch exchange (pabx) telephone system
BE8901238A BE1001879A7 (fr)	1989-09-18	1989-11-20	Perfectionnements a ou concernant un dispositif telephonique prive a branchement automatique. (pabx)
GB9020040A GB2237702B (en)	1989-09-18	1990-09-13	Improvements in or relating to a private automatic branch exchange (PABX) telephone system

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
IE297089A IE62326B1 (en)	1989-09-18	1989-09-18	Improvements in or relating to a private automatic branch exchange (pabx) telephone system

Publications (2)

Publication Number	Publication Date
IE892970A1 IE892970A1 (en)	1991-03-27
IE62326B1 true IE62326B1 (en)	1995-01-25

Family

ID=11037260

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IE297089A IE62326B1 (en)	1989-09-18	1989-09-18	Improvements in or relating to a private automatic branch exchange (pabx) telephone system

Country Status (3)

Country	Link
BE (1)	BE1001879A7 (fr)
GB (1)	GB2237702B (fr)
IE (1)	IE62326B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE19844672B4 (de) *	1998-09-29	2006-03-02	Siemens Ag	Programmgesteuertes Kommunikationssystem zur Vermittlung von daran angeschlossenen analogen und digitalen Kommunikationsendgeräten

1989
- 1989-09-18 IE IE297089A patent/IE62326B1/en not_active IP Right Cessation
- 1989-11-20 BE BE8901238A patent/BE1001879A7/fr not_active IP Right Cessation
1990
- 1990-09-13 GB GB9020040A patent/GB2237702B/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
GB2237702A (en)	1991-05-08
GB9020040D0 (en)	1990-10-24
IE892970A1 (en)	1991-03-27
BE1001879A7 (fr)	1990-04-03
GB2237702B (en)	1994-02-23

Similar Documents

Publication	Publication Date	Title
US5040209A (en)	1991-08-13	Telephone ringing monitoring and control system
US4975941A (en)	1990-12-04	Call processor for facilitating call completions
DE3687404T2 (de)	1993-07-22	Verfahren zu bereitstellung einer anzeige fuer einen gehaltenen teilnehmer.
DE69125973T2 (de)	1997-09-04	Steuer- und Schnittstellengerät für Fernsprechsysteme
US4211895A (en)	1980-07-08	Electronic telephone system with time division multiplexed signalling
CA1174773A (fr)	1984-09-18	Systeme telephonique a clavier electronique
EP0233892B1 (fr)	1994-02-16	Commutateur de lignes telephoniques
US3955052A (en)	1976-05-04	Subscriber unit particularly useful for time-division-multiplex system
EP0436238A1 (fr)	1991-07-10	Agencement pour relier un appareil de télécopie ou un poste téléphonique à une ligne de télécommunications
US4866768A (en)	1989-09-12	Station line interface circuit for a telecommunication network
CA2042292C (fr)	1995-05-30	Boucle multiple a adaptation d'impedance utilisant des dispositifs de filtrage
EP0169791A2 (fr)	1986-01-29	Musique d'attente pour systèmes à touches et systèmes téléphoniques privés automatiques
DE3856195T2 (de)	1998-10-08	Kommunikationsgerät
US5632017A (en)	1997-05-20	Telecontrollable communication system having a remote transmission module
GB2237702A (en)	1991-05-08	Ringing generator circuit
US3843844A (en)	1974-10-22	Subscriber loop circuit apparatus
DE59309964D1 (de)	2000-04-06	Modulare teilnehmereinrichtung
US3544727A (en)	1970-12-01	Arrangement for establishing conference connections in communication switching systems
US4660219A (en)	1987-04-21	Extension ringing arrangement key telephone system
US3931474A (en)	1976-01-06	Tone injection circuit
IE54733B1 (en)	1990-01-17	Provate automatic branch exchange
EP0252680A3 (fr)	1989-06-07	Appareil de numérotation automatique pour établir des connexions entre abonnés autorisés
IE58986B1 (en)	1993-12-15	Monitoring apparatus
US4638123A (en)	1987-01-20	Circuit arrangement for a small PABX with a switching matrix that has electronic crosspoints
NO324300B1 (no)	2007-09-17	Koblingsanordning til desentral stromforsyning

Legal Events

Date	Code	Title	Description
2004-06-30	MM4A	Patent lapsed