OK Thank you. So, It can works with tva50, cool

I do not see how you can connect regular analog devices like fax, telos hybrid, regular phones etc... i do not see that many slots on the front panel anywhere. Unless there's a separate devices that connects to this unit.

How much this would be provided that I stuff it with all the necessary cards (door thing I do not need)

Also, it says that it requires certification... it means that if I buy it, I won't be able to set it up myself?