CMIIW
voice codec = 8 kbps = 8000 bps
TTI per frame = 20 msec = 0.02 sec
duration of busy hour = 1 hour = 3600 sec
1. Based on Table Erlang B, Voice path options for 1 Erl with blocking 0.01%, N = 7 path options
2. Data erlang =
(total number of frames transmitted * TTI per frame)/Duration of busy hour
1 Erl = (x * 0.02)/3600
x = total number of frames transmitted = 3600/0.02 = 180,000 frames
y = total number of kbps transmitted = 180,000 * 8 kbps = 1440 Mbps
y = total number of kbps transmitted = 180,000 * 8 kbps = 14,400 Mbps et non 14400 Mbps
X=180000
Y=180000 * 64 kbps = 11,52 Mbps
64 & gos 0,01 y= 23, 040000
Y=28,8 si gos = 0,01 et voice =8 .