BE646069A - - Google Patents

Info

Publication number: BE646069A
Authority: BE; Belgium

Application number

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.)

1963-04-06

Filing date

1964-04-03

Publication date

1964-10-05

1964-04-03 Application filed filed Critical

1964-10-05 Publication of BE646069A publication Critical patent/BE646069A/xx

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/42—Circuits for by-passing of ringing signals
- 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
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
- H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted
- 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
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
- H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted
- H04Q1/4535—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted with an additional signal transmitted for voice protection
- 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
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/46—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies comprising means for distinguishing between a signalling current of predetermined frequency and a complex current containing that frequency, e.g. speech current
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Telephonic Communication Services (AREA)
Mobile Radio Communication Systems (AREA)
Interface Circuits In Exchanges (AREA)
Electronic Switches (AREA)
Details Of Television Systems (AREA)

BE646069D 1963-04-06 1964-04-03 BE646069A (xx)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DEST20480A DE1214276B (de)	1963-04-06	1963-04-06	Schaltungsanordnung zum Auswerten von Kombinationssignalen
DEST21410A DE1203319B (de)	1963-04-06	1963-12-04	Schaltungsanordnung fuer die Wahlaufnahme-einrichtungen einer Fernsprechvermittlungsanlage

Publications (1)

Publication Number	Publication Date
BE646069A true BE646069A (xx)	1964-10-05

Family

ID=25994167

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE646069D BE646069A (xx)	1963-04-06	1964-04-03

Country Status (8)

Country	Link
US (2)	US3330913A (xx)
AT (1)	AT285686B (xx)
BE (1)	BE646069A (xx)
CH (1)	CH419251A (xx)
DE (2)	DE1214276B (xx)
FR (1)	FR1339209A (xx)
GB (2)	GB998083A (xx)
NL (2)	NL6403445A (xx)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB1065367A (en) *	1965-11-19	1967-04-12	Standard Telephones Cables Ltd	Improvements in or relating to telephone systems
US3603740A (en) *	1969-08-18	1971-09-07	Northern Electric Co	Method and means for ringing a telephone subset
US3618038A (en) *	1969-12-24	1971-11-02	Edward S Stein	Telephonic data transmitting system
NL7113750A (xx) *	1971-10-07	1973-04-10
US3800096A (en) *	1972-09-08	1974-03-26	Scott D	Tone data receiver
JPS4984108A (xx) *	1972-12-15	1974-08-13
JPS50151010A (xx) *	1974-05-24	1975-12-04
US3936801A (en) *	1974-09-12	1976-02-03	Bell Telephone Laboratories, Incorporated	Multifrequency signal receiver timing circuit
US3982079A (en) *	1975-04-16	1976-09-21	Litton Business Telephone Systems, Inc.	Touch-to-rotary converter for a telephone instrument
DE2723795A1 (de) *	1977-05-26	1978-12-07	Standard Elektrik Lorenz Ag	Schaltungsanordnung zur abtrennung einer stoer- bzw. signalquelle von einem an einer fernsprechleitung betriebenen tastwahlempfaenger
JPS54103115U (xx) *	1978-10-12	1979-07-20
JPS54103116U (xx) *	1978-10-12	1979-07-20
WO1992011723A1 (en) *	1990-12-21	1992-07-09	Codex Corporation	Call progress decoder for multiple cadenced tones on telephone lines

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NL267564A (xx) *	1960-08-22

1962
- 1962-11-14 FR FR915339A patent/FR1339209A/fr not_active Expired
1963
- 1963-04-06 DE DEST20480A patent/DE1214276B/de active Pending
- 1963-12-04 DE DEST21410A patent/DE1203319B/de active Pending
1964
- 1964-03-11 US US350967A patent/US3330913A/en not_active Expired - Lifetime
- 1964-04-01 NL NL6403445A patent/NL6403445A/xx unknown
- 1964-04-03 GB GB13826/64A patent/GB998083A/en not_active Expired
- 1964-04-03 BE BE646069D patent/BE646069A/xx unknown
- 1964-08-03 AT AT663864A patent/AT285686B/de not_active IP Right Cessation
- 1964-11-27 GB GB48251/64A patent/GB1065540A/en not_active Expired
- 1964-12-01 CH CH1549164A patent/CH419251A/de unknown
- 1964-12-01 US US415052A patent/US3270144A/en not_active Expired - Lifetime
- 1964-12-04 NL NL6414177A patent/NL6414177A/xx unknown

Also Published As

Publication number	Publication date
DE1214276B (de)	1966-04-14
CH419251A (de)	1966-08-31
US3270144A (en)	1966-08-30
NL6414177A (xx)	1965-06-07
DE1203319B (de)	1965-10-21
GB998083A (en)	1965-07-14
NL6403445A (xx)	1964-10-07
GB1065540A (en)	1967-04-19
US3330913A (en)	1967-07-11
AT285686B (de)	1970-11-10
FR1339209A (fr)	1963-10-04

Publication	Publication Date	Title
AR142945A1 (xx)	1965-02-11
BE627012A (xx)
BE644570A (xx)	1964-07-01
BE547422A (xx)
BE31062A (xx)
BE462764A (xx)
BE507458A (xx)
BE533484A (xx)
BE644350A (xx)	1964-06-15
BE571209A (xx)
BE582314A (xx)
BE603935A (xx)
BE608372A (xx)
BE612803A (xx)
BE614220A (xx)
BE616247A (xx)
BE616830A (xx)
BE616967A (xx)
BE619061A (xx)
BE620325A (xx)
BE621232A (xx)
BE621517A (xx)
BE622160A (xx)
BE623117A (xx)
BE623220A (xx)