I added a real ITU-T codec to the ns-2 simulator to do this. I created
a "encoder_interface" class as a subclass of class Application. I
connected the encoder_interface class to the encoder using a socket. Every
20ms, the encoder_interface timer (subclass of TimerHandler) went off
and the encoder_interface got a frame from the encoder.
Similarly for the decoder. I created a decoder_interface class was a
subclass of Application that received frames, noted the time, converted
ns-2 time to real-time, and sent frames to the decoder via a socket
according to real time. (Basic playout-buffering.)
The codec_frame was a subclass of class AppData.
For full-duplex connections, you can attach one encoder_interface
application and one decoder_interface application to each of the
end-points.
-Samarth.
lekkie omotayo <[EMAIL PROTECTED]> wrote:
Sup guyz,
I need to write a new Traffic generator(VoIP) on the existing CBR.
I need to change stuffs like the
VoIP payload size = 24 bytes
IP header = 20 bytes
RTP Header = 12 bytes
UDP Header = 8 bytes
IP Packet Size 64 bytes
Time Interval = 20 ms
I will like to the traffic to be two, that when node 0 initiates the
traffic
node receives and node 2 shld also be able to send traffics to node 0
during
the same session. Some like a duplex voice conversation.
I need to know the classes to create, the ones to extend, the OTcl
objects
to create and extend, and also how to link the two together.
Thanks
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