QOS - DSCP Marking

Discussion in '3CX Phone System - General' started by dsnyc, Sep 19, 2010.

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  1. dsnyc

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    I saw the following blog post:

    http://www.3cx.com/blog/voip-howto/qos-windows-2008-server-local-policy/

    My question is, this seems to mark ALL traffic from the 3CX server with a DSCP number.

    Is there a better to way to limit this so that only voice-traffic to/from 3CX Server is tagged? I don't want non-voice related traffic tagged with the same DSCP.

    I set the MSRTPTOS value in 3CX Custom Parameters to the same value that I set the DSCP QOS group policy section.
     
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  2. leejor

    leejor Well-Known Member

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    Could you not use the destination IP option to limit QOS to just your VoIP provider?
     
  3. mcbsys

    mcbsys New Member

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    It looks like the Group Policy approach allows specifying the executable generating the packets, and/or the port number, so you could limit it that way.

    What I don't get is why you need Group Policy at all. I've asked that here:

    http://www.3cx.com/forums/msrtptos-does-not-add-dscp-tags-under-windows-20435.html
     
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