Offbeat Internet
Public Access

SIP

The Session Initiation Protocol (SIP) is a Voice over Internet Protocol (VoIP), which allows video and voice calls to be made over the Internet. SIP calls are made through a software client known as a "SoftPhone", or a special hardware adapter known as a "VoIP phone". Just copy & paste the full SIP address into your SIP SoftPhone or VoIP phone (the URI to precede the address is "sip:"). Below are addresses to various free public access SIP servers.
[IANA Port assignment = 5060]



Addresses last verified July 2011 - (more recent addresses might be found at "http://www.voip-info.org/wiki/view/Phone+Numbers")