On Wed, 5 Aug 1998 10:18:16 -0400, "Victor L. Boersma" <[email protected]> wrote:
> Subject: Speakerphone Standards > To: "INTERNET:[email protected]" <[email protected]> > Reply-to: [email protected] > Paul, > > In TIA TR41, the proposal was made several times to write such a standard, > but > it never got off the floor. The good design of a voice switch (the way in > which the device determines whether to process incoming signals or whether > to ignore the incoming signals and allow transmission of outgoing signals) > is a very > intricate matter and those who believe they have the best voice switch(es), > are not eager to part with that intellectual property. > > I know this doesn't help you, but at least it tells you why you have > trouble finding that public document. > > Ciao, > > Vic Vic - You are quite right that those of us who have invested heavily into knowledge and capability in speakerphone performance (measurement methodology, capability and design) are less-than-willing to casually part with this IP... Nonetheless, APREL (and its scientist-CEO) has for a long time participated in the ITU commitee which produced the speakerphone standard. The standard still does not address many areas, and we therefore have proprietary measurement methodologies for handsfree telephony. Even for digital phones... Cheers, Kate ___________________________________________________________ Kathy M. MacLean, President APREL Laboratories "Research-Training-Consulting-Testing Wireless-EMC-Acoustics-Health & Safety/SAR" 51 Spectrum Way, Nepean, Ontario, Canada K2R 1E6 Tel (613) 820-2730; Fax (613) 820-4161; Cell (613) 791-3777 email [email protected] http://www.aprel.com
