Segregation of IP telephony protocol in android and windows cell phones

VoIP oftenly known as IP telephony emerged as convenient protocol for transmission of voice through internet connections. VoIP technology is involved in the delivery of voice communication & multimedia sessions over ip networks. VoIP is available on many smart phones & internet devices so that users of portable devices, may place calls or send sms over 3G or Wi-Fi. The main focus of this paper is to study the VoIP technology in windows & android cell phones.