Frank,

I assume it indicates that the lack of packets on that stream may indeed indicate silence and not necessarilly network congestion or a loss of the audio signal. This is particularly for encodings that do not support silence suppression, e.g., G.711, or for implementations that do not implement the silence-suppression feature defined for the encoding, e.g., NetMeeting's G.723.1 implementation. You are correcct, though, that it is redundant for codecs that signal silence suppression in their caps, e.g., G.723.1. Again, I don't know the original rationale; this is just my best guess.

Paul Long ipDialog, Inc.

-----Original Message----- From: Mailing list for parties associated with ITU-T Study Group 16 [mailto:ITU-SG16@mailbag.cps.INTEL.COM]On Behalf Of Frank Derks Sent: Wednesday, April 25, 2001 4:34 AM To: ITU-SG16@mailbag.cps.INTEL.COM Subject: silenceSuppression in h2250LogicalChannelParameters

Can any one explain what the meaning of the silenceSuppression element in h2250LogicalChannelParameters is? If set to TRUE, does this indicate that silence suppression is supported on the channel, but that this is actually dependent on the support of this functionality by the codec? So why duplicate the information?

Regards,

Frank

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