07-25-2004 07:53 PM
We have a situation where a VoIP connection fails when RTP header compression is turned on over a L3 MPLS link. The same VoIP connection works if put over a clear channel link.
Does MPLS support RTP header compression? Does it have to be configured differently for makeing it work over an MPLS link?
Rgs
Divesh
07-26-2004 05:46 AM
cRTP over MPLS L3 link is not supported.
Hope this helps,
07-26-2004 08:49 PM
Hritter, Thanks for the response. Need calrification on this. Typically cRTP is done at the CPE end and if this just modifies the voice pay-load, why should it be not supported over an MPLS Link. As far as I understand, the payload is not modified in anyway when transporting an IP packet over MPLS link.
Rgs
Divesh
07-31-2004 01:09 AM
cRTP compresses the IP/UDP/RTP headers, not the payload
07-31-2004 03:17 AM
BTW: cRTP between the CE and PE is supported.
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