SKYPE !!!
is really very reliable internet telephony for freee.....
its really useful that for guys like me staying far from family and friends.
Voice quality is ultimate !!!!
I have used it to make calls from NY to bangalore on almost all time and the call is successfull.
There are lot many useful utilities in it other than just vocie call.
compare gmail where the load is very high ....skype is really best option
JUST
Go
DOWNLOAD
ENJOY FREE CALLS
ANYWHERE IN THE WORLD