VOIP session

Discussion in 'VOIP' started by bob@coolgroups.com, Jun 16, 2006.

  1. Guest

    If you create a VOIP session using SIP, will it continue to use more
    bandwidth than H323?

    How much more will it use with g.711 ulaw?
    , Jun 16, 2006
    #1
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  2. - data(RTP) and signaling (SIP or H.323) are different things, the data
    stream will generate most of the traffic no matter if you use h323 or sip
    - traffic generated depends mostly on codec and length of speech samples
    on the IP Layer with g.711 and 20ms of speech you get about 80 KBit/s
    (160Byte date + 40 Byte Headers @ 50 packets/s)



    schrieb:
    > If you create a VOIP session using SIP, will it continue to use more
    > bandwidth than H323?
    >
    > How much more will it use with g.711 ulaw?
    >
    Eckhart Wittstock, Jun 16, 2006
    #2
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  3. <> wrote in message
    news:...
    > If you create a VOIP session using SIP, will it continue to use more
    > bandwidth than H323?
    >
    > How much more will it use with g.711 ulaw?


    You are confusing signaling and media. H.323, SIP, MGCP, SCCP, etc. are all
    signaling protocols, and all of them use negligible bandwidth. The real
    cost is in the RTP media stream, and the particular signaling protocol you
    choose has no effect on the media.

    S

    --
    Stephen Sprunk "Stupid people surround themselves with smart
    CCIE #3723 people. Smart people surround themselves with
    K5SSS smart people who disagree with them." --Aaron Sorkin


    --
    Posted via a free Usenet account from http://www.teranews.com
    Stephen Sprunk, Jun 17, 2006
    #3
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