Thanks to the joint effort of an entire community it has been possible to unlock many modems/routers produced by Technicolor and based on OpenWrt Chaos Calmer 15.05.1, including the Smart Modem Plus DGA4130 (AGTEF), the FastGate DGA4131, the TIM HUB DGA4132 (AGTHP) and also several other devices: TG589vac TG788vn v2 TG789vac v2 HP TG789vac v1 TG789vac v2 TG789vac XTREAM 35B TG799vac TG799vac XTREAM TG800vac After unlocking it is also possible to install a GUI that allows access to all the features of the device. More info can be found here , here and here . The hard-working community has also proposed several implementations of a system to create a calls blacklist, some implementations use the iptables firewall, other implementations use asterisk. Below is a new solution called Voipblock...