Am Di 5. August 2008 schrieb Jeffrey Ratcliffe: > 2008/8/5 Joerg Reisenweber <[EMAIL PROTECTED]>: > > Only thing you may try for now is changing GSM-provider, as it seems to be > > very clear the issue is to be found on some GSM-networks, and not (or less) > > on some others. Generally the 1800/1900 networks seem to be more likely to > > cause this problem than the 850/900 networks. For Germany I got reports f > > noise only for E+ network (and resellers) > > My experience on Blau (E+) is that I hear the caller excellently - but > the caller complains that buzzing is very bad. > > > Hard to tell. We don't get sufficient number of reports, and due to nature of > > reports nearly all are problem-reports, people without problems usually don't > > post a report. > > I suggest, therefore, a wiki page where users are encouraged to > document the line quality at both ends (good or bad) against their > provider.
Local has never been a related issue. It's always far end that "get's the buzz". Quite basic and important to understand. We have *two* distinct audio-transfers with opposite directions. Buzz is on FR->(mixer,GSM)->far_end only. If you hear local buzz, your mixer/gsm-sidetone settings are somewhat incorrect. I'd appreciate such a wikipage and the reports there very much. Additional needed info: GSM-band (we don't know all providers!), signal-level GSM In fact that's what I did in Germany, collect reports from users about noise. I even had them call my answering machine so I actually collected some real audio samples as *.wav. Result: in Germany it's virtually only E+ that's causing the noise. Anyway still this makes no database for a guess on percentage of users that suffer from complaints of their callees about buzz-noise. cheers jOERG
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