On Sep 15, 2009, at 2:05 PM, Charles Ring wrote: > > While modern telephones can produce better audio (no carbon mics), > modern phone exchanges don't. Th e old exchanges passed whatever audio > was fed into them at least for local calls, but digital switching > has a > brick wall cutoff. I
It depends on whether your exchange is still using a TDM switch or softswitch, and whether you're on a standard landline or VoIP service. Big difference. Even TDM switches now go up past 3Khz -- the standard is in the 3.3Khz range, still far from adequate. VoIP service is far superior with some services going up to the 7Khz range -- you can actually tell the caller is Granny, which isn't always the case on TDM infrastructure. On the landline here, my wife's sisters all sound the same -- I can't tell who's calling. If they call on the VoIP line, that isn't the case. There is discussion about improving cellular bandwidth, too, but with the typical lousy handset, it may not make a lot of difference. Bad just sounds bad, not to mention the fact that all cellular has really done is kill our "old fashioned" expectations of what phone service should be. We now fully accept glitchy, noisy and totally unreliable service at an absurd price as the norm .. :-) Grant/NQ5T ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/[email protected]/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: [email protected] To unsubscribe, send an email to [email protected] with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
