RTP Compression Header

From: Larry Chuon (lchuon@gmail.com)
Date: Sun May 14 2006 - 15:00:44 ART


Hi Group,

I'm play around with command "ip rtp header-compression". After reading
http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/120newft/120t
/120t7/rtpfast.htm,
I'm still unsure its purpose. Can someone please shed some light on this?
From what I gathered, this command can also be used on frame-relay interface
as well. Under what circumstance do I need to use this?

Also, in help mode, I show "passive" option. Does it work similarly to a
passive interface?

r6(config-if)#ip rtp header-compression ?
  ietf-format Compressing using IETF format
  iphc-format Compress using IPHC format
  passive Compress only for destinations which send compressed
                    headers
  periodic-refresh Periodic context refresh

TIA,
Larry



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