nanog mailing list archives
Re: Operation Ghost Click
From: Jeroen van Aart <jeroen () mompl net>
Date: Wed, 02 May 2012 13:10:28 -0700
Sean Harlow wrote:
Then you'll be happy to know that most VoIP phones default to and good VoIP providers gladly support G.711, the exact same codec used in all digital trunks in the POTS network. Also, an on-the-ball VoIP carrier will be pushing G.722 "HD Voice" devices which offer about double the audio bandwidth in the same data bandwidth (64kbit/sec/stream) as G.711.
Technical specs aside I believe you are mistaken with regards to the actual every day reality. My experience (and anyone else I talked to) calling to and from mobile phones has been 100% a bad one with regards to audio quality. I know the bandwidth allows for better quality, but carriers don't do it, they do the opposite.
Why else would a mobile phone carrier feel the need to advertise an "HD" (shouldn't it be "HIFI"?) quality line (i.e. a quality that's standard with every land line and already suboptimal):
http://www.pcmag.com/article2/0,2817,2402598,00.asp "Sprint Brings HD Voice Calls to U.S." Whatever... -- Earthquake Magnitude: 4.0 Date: Wednesday, May 2, 2012 12:33:29 UTC Location: Vancouver Island, Canada region Latitude: 50.6619; Longitude: -129.8861 Depth: 10.00 km
Current thread:
- Re: Operation Ghost Click, (continued)
- Re: Operation Ghost Click Livingood, Jason (May 01)
- Re: Operation Ghost Click Leo Bicknell (May 01)
- Re: Operation Ghost Click JC Dill (May 01)
- Re: Operation Ghost Click Livingood, Jason (May 02)
- Re: Operation Ghost Click Jeroen van Aart (May 02)
- Re: Operation Ghost Click Valdis . Kletnieks (May 02)
- Re: Operation Ghost Click Jeroen van Aart (May 02)
- Re: Operation Ghost Click Christopher Morrow (May 02)
- RE: Operation Ghost Click Eric Wieling (May 02)
- Re: Operation Ghost Click Sean Harlow (May 02)
- Re: Operation Ghost Click Jeroen van Aart (May 02)
- Re: Operation Ghost Click Valdis . Kletnieks (May 02)
- Re: Operation Ghost Click Joe Hamelin (May 02)
- Cellphones and Audio (was Ghost Click, though I got no idea why) Jay Ashworth (May 02)
- Re: Cellphones and Audio (was Ghost Click, though I got no idea why) Adam Atkinson (May 02)
- Re: Cellphones and Audio (was Ghost Click, though I got no idea why) Robert Bonomi (May 03)
- Re: Cellphones and Audio (was Ghost Click, though I got no idea why) Jay Ashworth (May 03)
- Re: Cellphones and Audio (was Ghost Click, though I got no idea why) Valdis . Kletnieks (May 03)
- RE: Cellphones and Audio (was Ghost Click, though I got no idea why) Brandt, Ralph (May 03)
- RE: Cellphones and Audio (was Ghost Click, though I got no idea why) Brandt, Ralph (May 03)
- Re: Cellphones and Audio (was Ghost Click, though I got no idea why) Adam Atkinson (May 03)