The capability to calculate delays and required network bandwidth is embedded into the NetXpress user interface. For systems planning away from your NetXpress systems you can use this one.
Just change the value of Frames/Packet to display new results.
Select the number of Frames per Packet ( 1 < Frames/Pkt < 1000 ) for your Stream and press the Submit button.
100 Frames/Packet = 80.0 Packets/Second, 12.5 mS per Packet