RTP Header Compression on MPLS link

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Jul 6th, 2010
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Recent most of all enterprise networks are MPLS based WAN and connecting WAN link directly to Ethernet port. unlike older WAN link with serial interface.

Is there any way to compress RTP (cRTP) header and TCP header on MPLS wan link connnected to Ethernet interface?

Any how for voice traffic g729 is one option, but want to enable further BW save for better voice quality, is there way in MPLS link?

Header compression command does not work on Ethernet interface, but it work only on serial interface.

Pls. comment if anyone has better idea on improving voice quality over the WAN (apart from g729 and qos), using TCP/UDP/RTP header compression.


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Aaron Harrison Tue, 07/06/2010 - 01:35
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Saving bandwith will not necessarily improve your voice quality unless you have a small amount of bandwidth to start with and need to run more calls than you can support.

If you aren't getting consistent voice quality now, then implementing any compression will not help - with MPLS your sites are not directly connected, so you do not have full control over what is sent out on the link from the PE router to your on-site router, and no control over how traffic is treated as it goes throught the SP's network.

The only way to assure your voice quality is to work with your SP to get QoS properly implemented.




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