How do I determine the size of the packets I'm sending during a VoIP test? (NETIQKB512)

How do I determine the size of the packets I'm sending during a VoIP test?

There is a simple equation that relates codec speed and the delay between packets to the datagram payload size. The datagram payload size is calculated by the following equation.

packet delay (in milliseconds) x Codec speed (in kilobits/second)

(8 bits/byte)

The total packet size, excluding the transport header, is calculated using the following equation.

Datagram Payload Size (in bytes) + 12 bytes (RTP Header) + 8 bytes (UDP Header) + 20 bytes (IP Header) + Data Link Header (varies by protocol)

note

For more information, see the following white paper.

https://www.netiq.com/Downloads/Library/White_Papers/NetIQ_Evaluating_Data_Networks_for_VoIP.pdf

Formerly known as NETIQKB512

If you need further assistance with the subject matter discussed in this Knowledge Base Article, please contact NetIQ Technical Support .