The Goliath intercoms come from the manufacturer Dahua, as do those from TURM Tech. The Goliaths have a logo, the TURMs do not. Otherwise, they are identical.
In the Far East, you can also get intercom systems from Dahua. These are identical to the Goliath and cost only half the price. Of course, you have to be aware that you don’t get any support if problems occur. I will be installing the system at my place soon. However, the test setup already worked flawlessly.
Not only in the Far East. There are also dealers here at home...
We will most likely use the Wantec Monolith. Video transmission that runs directly over the network and not through a cloud is modular anyway, i.e. usable, for example, with eKey.