Teams Rooms and Zoom Rooms network calculator

Enter how many rooms you have and what’s in them. You’ll get the internet bandwidth to plan for, the firewall ports to open and the PoE budget per room.

Platform

Microsoft Teams Rooms Zoom Rooms

Number of rooms

Rooms in calls at the same time (%)

Busy offices often see half to two thirds of rooms in calls at peak.

PoE devices in each room

Touch controllers

Room booking panels

Ceiling microphones

Table microphones

Cameras or video bars on PoE

Occupancy sensors

Budgets use what a switch reserves for each PoE class.

How the figures are worked out

Bandwidth uses each platform’s published planning guidance per room, multiplied by the number of rooms you expect to be in calls at the same time. Microsoft suggests planning 10 Mbps in each direction per Teams Room, although rooms typically use 3 to 4 Mbps. Zoom publishes figures for 1080p video; rooms with two screens and content sharing use more.

The PoE budget adds up what a switch reserves for each device’s PoE class, plus 20% headroom.

Questions

How much bandwidth does a Teams Room need?

Microsoft recommends planning for 10 Mbps up and down per room. In practice a room typically uses 3 to 4 Mbps and adjusts to what’s available.

Which ports does Zoom Rooms need?

Outbound TCP 80, 443, 8801 and 8802, and UDP 3478, 3479 and 8801 to 8810. Check Zoom’s current list before go-live.

How do I size a PoE switch for a meeting room?

Add the reserved power for each device’s PoE class, allow about 20% headroom, and choose a switch whose total PoE budget covers it.

Design the whole room

RoomSpec turns a site survey into a certified Teams or Zoom design, bill of materials and proposal in minutes. Join the waitlist for early access.

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More free tools

Display sizeThe right screen size for any meeting room, from the farthest seat.LED wallPixel pitch, resolution, weight and power for an LED or LCD video wall.ProjectorBrightness and throw distance for a classroom or meeting room projector.Certified devicesIs that device certified for Teams Rooms or Zoom Rooms, and until when?Room sizeHow many seats a room holds, its room class, and the kit it needs.Room acousticsReverberation time from the room’s finishes, or measure it with a clap.Speaker coverageHow many ceiling speakers and microphones a room needs, and where.