I am no longer actively maintaining VoIP Hopper. To get the latest package, take a look at the Kali Linux package:

https://gitlab.com/kalilinux/packages/voiphopper

VoIP Hopper network infrastructure penetration testing security tool. A tool to test for the (in)security of VLANS. It can mimic the behavior of IP Phones to better understand business risks within an IP Telephony network infrastructure. This site is for up-to-date code. Documentation website: https://voiphopper.sourceforge.net