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<p class=MsoNormal>Hi All,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I am testing a range of G722 capable DECT based CPE.<o:p></o:p></p>
<p class=MsoNormal>With one range, I have noticed that the first 200ms or so of
each separate prompt file being played back is played out distorted from the
DECT handset.<o:p></o:p></p>
<p class=MsoNormal>When having a normal conversation, the quality is excellent,
but when accessing your vmail, all the individual audio files making up the
menu choices exhibit the distortion, which is pretty annoying.<o:p></o:p></p>
<p class=MsoNormal>The same unit using G729, alaw or ulaw works 100%.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I wonder if anybody else has uncounted this issue?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>My guess at this point –<o:p></o:p></p>
<p class=MsoNormal>There may be a short break in the RTP between the separate files
being played out by FS that makes up any menu. <o:p></o:p></p>
<p class=MsoNormal>During this time the DECT handset’s AGC probably goes
to MAX amplification (as its not receiving any input during the short break in
RTP).<o:p></o:p></p>
<p class=MsoNormal>Then, when the RTP returns at the start of the next file,
the AGC boosts the audio into clipping zone and takes 200ms to dampen down back
to normal good levels.<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal>Looks like in these devices the G722 encode/decode is
actually done in the DECT handset and not the voip-base unit.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Is there any parameter that can be set in FS to ensure that
the RTP keeps flowing, sending ‘silence’ between prompts ? Would be
interesting to validate the above ‘guess’.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Best Regards<o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>Keith<o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
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