[ns] Header Compression ???

[Andi Nugroho]

Hai ,,
I wanna ask you all about header compression on Ns2.
Im doin a project to make a header compression on VoIP packet. Here is my
topology :

   w(0)     w(1) ----VoIP
    \        /   \  Source (s1)
     \      /     \
      \    /       \ S2
switch w(2)
        |
        |
       BS(0)


   0           0
  MS(0)       MS(1)

The compression was done after the packet goin through the node w(1) which
is i assume as the voip gateway.
What should i do to compress a RTP header???
if i wanna make a packet compression after the packet going through the
node what shoukd i do??
Thx for all info.

-- 
Andi Nugroho
Telecommunication&Multimedia,Electrical Eng.
Sepuluh Nopember Technological Institute
Phone  :+6231-60350415
Mobile :+6285648223929
Email  :andi_n at elect-eng.its.ac.id