Goodwill
Gcf Global: Beyond Email
Learn about the various ways beyond email of communicating and sharing online.
Wikimedia
Wikipedia: Session Initiation Protocol (Sip)
An introduction to Session Initiation Protocol (SIP)that involves multimedia elements such as video, voice, instant messaging, online games, and virtual reality. It is one of the leading signaling protocols for Voice over IP.
Get Safe Online
Get Safe Online: Use Internet Telephony Safely
Internet telephony is using the internet for voice communication. It is also called voice over IP (VOIP). This site provides some tips on how to use VOIP safely and avoid loss of privacy.