GB2278754B - Telephone instrument - Google Patents

Telephone instrument

Info

Publication number
GB2278754B
GB2278754B GB9311405A GB9311405A GB2278754B GB 2278754 B GB2278754 B GB 2278754B GB 9311405 A GB9311405 A GB 9311405A GB 9311405 A GB9311405 A GB 9311405A GB 2278754 B GB2278754 B GB 2278754B
Authority
GB
Grant status
Grant
Patent type
Prior art keywords
telephone instrument
telephone
instrument
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
GB9311405A
Other versions
GB9311405D0 (en )
GB2278754A (en )
Inventor
Edward John Wemyss Whittaker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nortel Networks Ltd
Original Assignee
Nortel Networks 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
Grant date

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers; Analogous equipment at exchanges
    • H04M1/60Substation equipment, e.g. for use by subscribers; Analogous equipment at exchanges including speech amplifiers
    • H04M1/6025Substation equipment, e.g. for use by subscribers; Analogous equipment at exchanges including speech amplifiers implemented as integrated speech networks
GB9311405A 1993-06-02 1993-06-02 Telephone instrument Expired - Fee Related GB2278754B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9311405A GB2278754B (en) 1993-06-02 1993-06-02 Telephone instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9311405A GB2278754B (en) 1993-06-02 1993-06-02 Telephone instrument

Publications (3)

Publication Number Publication Date
GB9311405D0 GB9311405D0 (en) 1993-07-21
GB2278754A true GB2278754A (en) 1994-12-07
GB2278754B true GB2278754B (en) 1997-06-18

Family

ID=10736527

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9311405A Expired - Fee Related GB2278754B (en) 1993-06-02 1993-06-02 Telephone instrument

Country Status (1)

Country Link
GB (1) GB2278754B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07264279A (en) * 1994-03-18 1995-10-13 Nec Corp Echo canceller
GB2318024B (en) * 1995-05-31 1998-09-02 Casio Phonemate Inc Speakerphone, speakerphone system and method of operating a speakerphone
GB2301731B (en) * 1995-05-31 1998-09-02 Casio Phonemate Inc Speakerphone, speakerphone system and method of operating a speakerphone
CA2158408C (en) * 1995-09-15 1998-12-08 Graham H. Thompson Architecture for robust voice cti
FR2743240B1 (en) * 1995-12-28 1998-02-20 Sagem Facsimile associated with a telephone station has adjustable sensitivity
GB9611952D0 (en) * 1996-06-07 1996-08-07 Plessey Telecomm Encoding telephony onto DMT carriers

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2175175A (en) * 1985-05-10 1986-11-19 Mitel Corp Digital loudspeaking telephone
EP0364383A2 (en) * 1988-10-12 1990-04-18 Rolm Company Half-duplex speakerphone
EP0531769A1 (en) * 1991-09-10 1993-03-17 Alcatel SEL Aktiengesellschaft Circuit arrangement for dynamic control of a speech communication terminal

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2175175A (en) * 1985-05-10 1986-11-19 Mitel Corp Digital loudspeaking telephone
EP0364383A2 (en) * 1988-10-12 1990-04-18 Rolm Company Half-duplex speakerphone
EP0531769A1 (en) * 1991-09-10 1993-03-17 Alcatel SEL Aktiengesellschaft Circuit arrangement for dynamic control of a speech communication terminal

Also Published As

Publication number Publication date Type
GB9311405D0 (en) 1993-07-21 grant
GB2278754A (en) 1994-12-07 application

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20070602