"alexd" <look@my.sig> wrote in message news:2808337.uX82WGWQ04@ale.cx...
> 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.

There is also the issue of A-Law / Mu-Law conversion depending where in the
world you are or does the phone deal with that?
>
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