ATE25454T1 - Ton-quelle fuer vermittlungssysteme. - Google Patents

Ton-quelle fuer vermittlungssysteme.

Info

Publication number
ATE25454T1
ATE25454T1 AT84302298T AT84302298T ATE25454T1 AT E25454 T1 ATE25454 T1 AT E25454T1 AT 84302298 T AT84302298 T AT 84302298T AT 84302298 T AT84302298 T AT 84302298T AT E25454 T1 ATE25454 T1 AT E25454T1
Authority
AT
Austria
Prior art keywords
tone
rom
stored
address
sequence
Prior art date
Application number
AT84302298T
Other languages
English (en)
Inventor
Ernst August Munter
Andreas Laszlo Aczel
Original Assignee
Northern Telecom 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.)
Filing date
Publication date
Application filed by Northern Telecom Ltd filed Critical Northern Telecom Ltd
Application granted granted Critical
Publication of ATE25454T1 publication Critical patent/ATE25454T1/de

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
    • H04Q1/44—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
    • H04Q1/457—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals
    • H04Q1/4575—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals which are transmitted in digital form

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Telephone Function (AREA)
  • Telephonic Communication Services (AREA)
  • Exchange Systems With Centralized Control (AREA)
AT84302298T 1983-05-04 1984-04-04 Ton-quelle fuer vermittlungssysteme. ATE25454T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA000427409A CA1185023A (en) 1983-05-04 1983-05-04 Tone source for telephone systems
EP84302298A EP0125012B1 (de) 1983-05-04 1984-04-04 Ton-Quelle für Vermittlungssysteme

Publications (1)

Publication Number Publication Date
ATE25454T1 true ATE25454T1 (de) 1987-02-15

Family

ID=4125166

Family Applications (1)

Application Number Title Priority Date Filing Date
AT84302298T ATE25454T1 (de) 1983-05-04 1984-04-04 Ton-quelle fuer vermittlungssysteme.

Country Status (5)

Country Link
EP (1) EP0125012B1 (de)
JP (1) JPH0697776B2 (de)
AT (1) ATE25454T1 (de)
CA (1) CA1185023A (de)
DE (1) DE3462367D1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3730233A1 (de) * 1987-09-09 1989-03-23 Telefonbau & Normalzeit Gmbh Hoerton- und sprachansagegenerator fuer digitale fernmelde-, insbesondere fernsprechvermittlungsanlagen
CA2068154C (en) * 1992-05-07 1997-01-14 Janice C. Halligan Programmable call progress tones for a switching system
GB2353442B (en) * 1999-06-15 2003-08-27 Nec Corp Ringing tone control method and device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4205203A (en) * 1978-08-08 1980-05-27 Wescom Switching, Inc. Methods and apparatus for digitally signaling sounds and tones in a PCM multiplex system
DE2855151A1 (de) * 1978-12-20 1980-07-10 Siemens Ag Digitaler hoertongenerator
DE3116576A1 (de) * 1981-04-27 1982-11-18 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Verfahren zum betreiben eines digitalen hoertongenerators

Also Published As

Publication number Publication date
EP0125012A1 (de) 1984-11-14
JPH0697776B2 (ja) 1994-11-30
DE3462367D1 (en) 1987-03-12
CA1185023A (en) 1985-04-02
EP0125012B1 (de) 1987-02-04
JPS59208975A (ja) 1984-11-27

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee