Gentlemen, Good morning! I would really like to take a doubt, a customer has a C40 video end point on a specific site, it leaves the option "Auto Answer" in ON mode, but for some power problems in the locality every time the equipment is reset he com...

Srs, Good Morning! okay?I have a problem in the environment of a client, I have some 7821 phones that do not register at all, every time it resets and takes a new IP, and on the same switch I have devices of the same model that work, in some interfac...

Boa Tarde!   Estou com um problema na rede onde tenho um link SIP, ao efetuar a ligação para o celular A o mesmo atende normalmente, coloco o mesmo na espera e ligo para o celular B, ao tentar efetuar a transferência a ligação cai e antes funcionava....

Good morning, classmates!   My name is Everaldo and I have the following problem, I am trying to make a DDD connection (from one state to another in Brazil), and having the following message from the operator, "the number does not exist", analyzing a...