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sip Signalling traffic consumtion

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  • #30530 Reply
    Macboi
    Guest

    As we know we have signalling traffic and the media traffic, the media traffic’s bandwidth consumtion will be based on the codec used but my question is : how much does the signaling traffic consume so i can calculate the correct bandwidth i need.

    #30531 Reply
    B Mukhange
    Guest

    I want to install a satellite (VSAT) dish for Internet and VoIP with one or two phones. The phone usage is normal. How can I calculate the required bandwidth both up and down?
    BIM

    #30532 Reply
    MikeM to Mukhange
    Guest

    Mukhange,

    Bandwidth required for VoIP is standard from the gateway side meaning that you decide on either G.729 (8kb) or G.723 (6.3kb). These are standard codecs and the bandwidth used for each is standard for any device. So if you use G.729, the payload size will be 8kb in each direction, however, you need to add the IP header information to the payload to complete the packet. This part varies slightly based on your router and the network. Typically it is between 10kb & 16kb (yes the header is actually bigger than the payload). So for G.729 the average bandwidth needed is around 18kb or so in each direction per call.

    MikeM
    mike_voip@hotmail.com

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