SIPPTS is a set of tools to audit VoIP servers and devices using the SIP protocol. It is a set of perl scripts that allow you to identify extensions, remotely crack passwords, check for missing authentication to make phone calls, and more.
You can download it from the following link: https://packetstormsecurity.com/files/download/149909/sippts-1.2.2.zip
Source: https://packetstormsecurity.com/files/149909/SIPPTS-1.2.2.html