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PacketCable Implementation
book

PacketCable Implementation

by Jeff Riddel CCIE No. 12798
February 2007
Intermediate to advanced content levelIntermediate to advanced
1104 pages
27h 48m
English
Cisco Press
Content preview from PacketCable Implementation

The Effect of Changing Packetization Interval

The packetization intervals supported in PacketCable are 10 ms, 20 ms, and 30 ms. In the previous example a 20-ms packetization interval was used along with the G.711 CODEC.

Now you can examine what happens when the packetization interval is changed. First, take a look at the 10 ms case. As you might guess, the only thing that is going to change in the voice packets is the size of the RTP payload. Instead of 160 bytes of payload in a single packet, each packet now contains only 80 bytes of payload. As a tradeoff, twice as many packets must be sent; you’ll see the benefits and drawbacks of this in a bit. The decrease of 80 bytes in the RTP payload results in a decrease of 80 bytes in the required UGS ...

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