[EMAIL PROTECTED] wrote:
On Sun, 29 May 2005, Steve Underwood wrote:
It isn't a one way scale. Music on hold over G.729 is often
unrecognisable. Over GSM 06.10 it is usually just poor. Is that a big
issue for you, or totally irrelevant? GSM 06.10 and G.729 at 8kbps offer
fairly similar quality for clean voice. GSM wins when there is
background noise. G.729 wins on bit rate.
One nice feature of GSM is that people are used to the way it sounds from
their cellphones, they mentally tune the distortions out.
Very few GSM phones/networks use the 06.10 codec any more. Its all
half-rate, EFR and AMR these days. I think only phones more than 5 years
old, or ancient cell sites, will be using 06.10, although all current
phones still support it for compatibility.
Regards,
Steve
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