In the FVWM Crystal manager there is a link for sipcrack
however selecting it will only return an error as shown.
Sipcrack however is not installed.Code:cd: 1: can't cd to /pentest/voip/sipcrack/ -e: 1: ./sipcrack: not found
You can add it by following the link here or just delete the link itself.
This is in the vmware version of bt4