Well download the file to ur desktop,
tar -xzvf sifyconnect-1.3-bin.tar.gz ---------------------> Extract its contents
Open the terminal
Then type(Note: You must login as a root user)
cd Desktop
cd sifyconnect-1.3-bin/

sudo ./install.sh
Now your dialer has been installed.
Everytime you login enter the following commands
sifyconnect-1.3-bin/sifyd
sifyconnect-1.3-bin/sifyconnect --login -------> logging in
sifyconnect-1.3-bin/sifyconnect --logout ------> logging out