Hi, great forum, Erlang is oriented to Voice therefore first step is to calculate how many channels you need to support 2.88 Erlang, my calculation gives 7 circuits (2.2 Erl @0.01).
One call using VOIP is 24 Kbps (depending in your codecs for compression), then Kbps could be:
24 Kbps* 7 = 168 Kps. Then based on this you can convert to Ethernet packets.
Comments or corrections are welcome