HDVoice is a topic quite close to my heart. I've been following some recent developments that may be of interest. First, the idea of an ATA that is G.722 (or otherwise HDVoice) capable=0Ais a little odd. Anything that would connect via RJ-11 would, by=0Adefinition, be built to PSTN standards and so NOT capable wideband Aaudio. Passing wideband to the PSTN would actually cause problems. Everything=0Awill filter the analog audio to meet the 3.4 KHz passband specified for 8 KHz sampling. However, Arris Corp claims that their cable CPE could be HDVoice capable=0Awith just a firmware upgrade. That CPE only provides an analog RJ type connection to the customer. Gigaset has stepped up and said that their DECT systems could, again=0Awith a firmware update, accept wideband analog audio via the RJ input. This means of taking cable customers to HDVoice could be cheaper than the other commonly suggested approach, which is to add a DECT/CATiq base radio to the cable CPE. That would mean rolling out large numbers of new CPE, at considerable cost.=0A=0ACable Labs have included DECT/CATiq in their ercent specs, providing a formal standard-based way to add HDVoice capability in cable CPE. Here's some related resources: http://www.hdvoicenews.com http://www.mgraves.org http://www.mgraves.org/2011/09/hdvoice-on-the-cheap-analog-rj-11-style/ http://www.mgraves.org/2011/08/q-how-will-cat-iq-help-hdvoice/ On Tue, 20 Sep 2011 21:05:24 -0500, Frank Bulk wrote:
Can anyone recommend any ATAs with CAT-iq and HD codec support? We're thinking of a voice application for residential users that would offer HD-quality voice. I'm told that traditional analog phones are insufficient, and it appears that the best method for providing HD voice is either native IP to the phone or DECT's CAT-iq.
Frank
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