The wired line network has been well studied and widely used for a long
time. Most of its protocols are so successful that passed the test of
time. There are many
similar tasks in mobile and wired line environment, and we would like
to achieve compatible, inter-working solutions. So it is a plausible
idea to use the protocols of the wired line network in mobile
environment too. However, the mobile and wired line environment differ
significantly; mainly the bandwidth is different in the two networks.
Although the difference is going to be smaller with the help of new
generation of mobile networks, it will
still remain significant. An acceptable solution is to compress these
protocols. We have not found such a solution in the literature
so our opinion is that this article is the first dealing with SIP compression.
We have created a demonstration
system, which connects two SIP user agents to each
other and ensures the compression and decompression of the
messages between them.
In this article we show our development about adapting various compressing
algorithms for SIP compression, and we evaluate them