I have a situation where needed to create network within about 20 offices. Typically each office is rented by different company, but some of them has two or more rooms. So i have no idea how many and which devices they going to connect.
I am planning to give each room one wall socket connected to managed switch. And create vlans based on companies.
Question: Is it possible to extend their network by connecting inexpensive unmanaged switch to socket like it shown on diagram? Will they going to receive ip addresses in vlan range automatically, including WiFi Access point?
And one more. Some of managed switches has Voice vlan options. Does that mean, that voip phone phisically connected into specific vlan will be part of Voice vlan automatically (priority issue)?