• Khushbu Patel
• Kalpesh Patel,
• Krunal Suthar

Voice over Internet protocol(VOIP) has become a very popular. It is a methodology and group of technology for the delivery of a voice communication and multimedia session over Internet protocol network such as Internet. VOIP is the main protocol which help to make a call. It is used SIP (Session Initiation Protocol) protocol and PSTN (Public Switched Telephony Network) and other protocol. It is allows telephone calls to be made over digital computer network including the Internet. VOIP’s main advantage is audio and video call communication. But some problems are create in VOIP system like spam calls. Attackers are hack the numbers and get all details, security etc. In this paper, various methods for security and unsolicited calls referred as pam over VOIP to detection and prevention of unsolicited calls using call parameters.

VOIP, White list, Black list, CAPTCHA method, Feedback.

"Enhance approach for handling spam calls in VOIP scenario", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 2, page no.1176-1182, February-2018, Available :http://www.jetir.org/papers/JETIR1802213.pdf

"Enhance approach for handling spam calls in VOIP scenario", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 2, page no. pp1176-1182, February-2018, Available at : http://www.jetir.org/papers/JETIR1802213.pdf