I am doing a project in voip.I tryied to use Sipcommunicator for connecting to
pc to phone : the phone is ringing .but i cant speak or hear any response..
invalid numbers are reported..
pc to pc : i have made changes .. same problem persits i cant hear.. thru my head phone
is it because of any problem with my head phone or bec any other reason
do mail back ...it is very urgent
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