I want to install a VOIP System in my company to communicate between the offices and branches,
There is two branches apart of the head office.
+The head office has:
-ten(10) decks
-one(1) land line
-one(1) mobile line
+branch #1 has:
-two(2) decks
+branch #2 has:
-one(1) deck
And all the three points (offices) are connected with a switch and wireless network.
So please advice me with the devices required to install the system and how to buy.
