HI FRIENDS I AM STARTING THIS BLOG FOR THE BEGINNERS IN VOICE TECHNOLOGY CAUSE THERE ARE LOTS OF PROBLEMS EVERY BEGINNER FACE JUST BECAUSE IT IS NEW TO TELEPHONY SYSTEM. 
IT'S  QUITE DIFFERENT FROM NORMAL ROUTING AND SWITCHING IT NEED THE CORE CONCEPT OF TELEPHONY SYSTEM AS I  AM TELECOMMUNICATION GRADUATE I WILL TRY TO FILL THE GAP BETWEEN TELEPHONY SYSTEM AND VOIP NETWORKING.