Most customers will determine they need a specific number of simultaneous session/channels and will need to calculate the total MPUs required to estimate the number of servers to deploy. This can be achieved by multiplying the codec mix percentages and adding up the MPU values.

For example, a customer may want 800 channels, 75% G.711, 25% G.729AB.

75% G.711 = 800 * 0.75 = 600 * 1 MPU = 600 MPU

25% G.729AB = 800 * 0.25 = 200 * 2 MPU = 400 MPU

Total = 1000 MPU

Now estimating MPUs per server will allow estimation of servers required.