Matrix SPARSH VP710 User Manual page 685

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Repeat the above step to add more codecs to the Enable Codecs column.

To remove the codec from the Enable Codecs column, select the desired codec and then click

To adjust the priority of codecs, select the desired codec and then click

Click Confirm to save the change.

Packetization Time

Ptime (Packetization Time) is a measurement of the duration (in milliseconds) of the audio data in each RTP packet

sent to the destination, and defines how much network bandwidth is used for the RTP stream transfer. Before

establishing a conversation, codec and ptime are negotiated through SIP signaling. The valid values of ptime range

from 10 to 60, in increments of 10 milliseconds. The default ptime is 20ms. You can also disable the ptime

negotiation.

The following table summarizes the valid values of ptime for each audio codec:

G.722.1c(48kb/s)

G.722.1c(32kb/s)

G.722.1c(24kb/s)

G.722.1(24kb/s)

Matrix SPARSH VP710 User Guide

Packetization Time (Minimun)

Packetization Time (Maximun)