Trunk port Cisco + unmanaged switch?

Question

Computer networks

Hello colleagues.

Imagine an office where there is one lan cable in the offices and the task is to connect workstations, ip-phones and printers working in separate vlans. Lan cables are connected to Cisco managed switches.
My idea is as follows:
we create three vlans: vlan
10 - workstations
vlan 20 - ip phones
vlan 30 - printers
we connect ip-phones and printers to it. We connect computers to ip-phones in the lan port. On inet phones, we configure the port to trunk and tegroom vlan 10 and 20 to lan and inet ports, respectively.
Thus, an unmanaged switch "distributes" frames from the cisco 802.1Q port to phones, they, in turn, tag vlan. Printers work in "access a mode" at the expense of native vlan on cisco port.
What do you think about such a decision? Perhaps there are other solutions? Do not offer pulling additional cables :)

Answer 1

Putting a managed switch is not an option?))
In general, it will work - I personally checked it, but not all unmanaged switches are suitable, you need to test it.