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Old 07-24-2006, 05:33 PM
alexd
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Default Re: Wi-Fi phones, any good?

divoch wrote:

> "R. Mark Clayton" <nospamclayton@btinternet.com> wrote in message
> news:rIadnVLuGqYqM1nZnZ2dnUVZ8tydnZ2d@bt.com...


>> "divoch" <divoch@REMOVETHIShotmail.com> wrote in message
>> news:fd0xg.59666$Z61.22642@newsfe4-win.ntli.net...


>>> ...except that quite a few free hotspots abroad have only a low bit
>>> rate (specifically I know of Czech republic), so the Wi-Fi VoIP phone
>>> will have rather poor quality speech connection, I would have thought.


>> It would have to be a seriously low bit rate not to match 32kbit/s ADPCM!


> As far as I know it is just 64kbits/s, not much more than the old dial-up.
> Is that really adequate?


If your handset supported a compressed codec [eg speex, g.729, GSM] and
no-one else was using the hotspot at the same time as you, you should be
OK. Don't bet on either of those two, however! I would have thought the
main issue with hotspotting would be that hotspots may or may not allow
outbound connections on anything other than port 80/25/110/the usual.

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