oh, and VoIP over 3G will always suffer in quality, because of significant jitter imposed by 3G transport.
On Mon, Jan 26, 2015 at 9:20 AM, Stanislav Sinyagin <[email protected]> wrote: > Nico, > > you may (and may not) get some improvement in voice quality if you > select a network-optimized codec, such as speex, iLBC, SILK, and so > on. > > Most VoIP providers don't offer these codecs, because of their > complexity and required CPU power. > > So, your best choice would be to install one or several VPS'es around > the globe, set up some VoIP server software, like FreeSWITCH or > Asterisk, and control the full communication between them and your > clients. Then these VPS'es would hand over the traffic to some local > PSTN providers. > > So, this needs some engineering, customization, tests => $$$ :) > > cheers, > stan > > > On Sun, Jan 25, 2015 at 4:14 PM, Nico Schottelius > <[email protected]> wrote: >> Good morning Swinog, >> >> we are looking for a new VoIP hoster that actually offers decent voice >> quality, preferable even over hspa(+) based networks, working in the US, >> Switzerland and South Korea. >> >> Working := can receive / make phone calls well enough for daily use (I >> am aware that VoIP should work everywhere, but in practice the quality >> either in Switzerland or abroad or both is too poor to talk for long). >> >> So far we are using telephoenix.com (reseller of $provider), but have >> huge problems in terms of voice quality (even via wifi via dsl / cable). >> >> I was wondering, if anyone can recommend a provider and also has tested >> reachability in East Asia and North America? >> >> Cheers, >> >> Nico >> >> -- >> New PGP key: 659B 0D91 E86E 7E24 FD15 69D0 C729 21A1 293F 2D24 >> >> >> _______________________________________________ >> swinog mailing list >> [email protected] >> http://lists.swinog.ch/cgi-bin/mailman/listinfo/swinog > > > > -- > Stanislav Sinyagin > Senior Consultant, CCIE #5478 > [email protected] > +41 79 407 0224 -- Stanislav Sinyagin Senior Consultant, CCIE #5478 [email protected] +41 79 407 0224 _______________________________________________ swinog mailing list [email protected] http://lists.swinog.ch/cgi-bin/mailman/listinfo/swinog
