Date Added: Jan 2011
The ever popular world of wireless mobile communication is taking wide strides and is becoming to a greater extent more technologically advanced as compared to its predecessors. Mobile communications such as GSM (Global System for Mobile Communication) is already widespread and supports a large number of subscribers all around the global. The voice traffic is on an increase over the already existing system thereby demanding bulk resources, increasing the overall cost and putting a limit to its use in the long run. The security of the voice traffic is also an issue of concern to avoid intrusion by unscrupulous elements over the mobile communication network.