Nortel Meridian ITG Line 2.0 Description, Installation And Operation Manual page 79

Table 13
ITG QOS levels (Part 3 of 4)
Packet One-way
loss (%) delay (ms)
4 400-440
5 50-180
5 190-210
5 220-360
5 370-400
6 50-200
6 210-330
6 340-380
7 50-140
7 150-310
7 320-340
8 50-290
8 300-320
9 50-270
9 280-300
10 50-260
Note: The QOS levels are equivalent to the following MOS values:
• excellent 5
• good 4
• fair 3
• poor
ITG Line 2.0/i2004 Internet Telephone Description, Installation, and Operation
G.729A
fair
good
good
fair
fair
good
fair
fair
good
fair
fair
fair
fair
fair
fair
fair
2
IP Network engineering guidelines
QOS level
G.711A/G.711u
fair
good
good
fair
fair
good
fair
fair
good
fair
fair
fair
fair
fair
fair
fair
Page 79 of 302
G.723.1
poor
good
fair
fair
poor
fair
fair
poor
fair
fair
poor
fair
poor
fair
poor
fair