Phreaking Articles 
SIP - Session Initiation Protocol
Session Initiation Protocol is used to (set up and terminate voice or video calls of course) establish two-party (unicast) or multiparty (multicast) sessions. It also allows modification of existing calls. The modification can involve changing addresses or ports, inviting more participants, and addi... continue reading
Phone Phreaking - Now & Then
The article presented here is about the various methods of phone phreaking as one of the early manifestations of hacking into systems. Phreaking as we know it, is defined as playing , experimenting and exploiting the telephone network.
Who are phone phreaks?
A phone phreak is generally... continue reading