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378
ITG Engineering Guidelines
553-3001-202 Standard 1.00 April 2000
Packet
loss (%)
One-way
delay (ms)
QoS level
G.729A G.711A/G.711u G.723.1
1 350-360 fair good fair
1 370-630 fair fair fair
1 640-690 fair fair poor
1 700-780 poor fair poor
2 50-270 good good good
2 280-300 good good fair
2 310-320 good fair fair
2 330-510 fair fair fair
2 520-580 fair fair poor
3 50-250 good good good
3 260 good good fair
3 270-460 fair fair fair
3 470-490 fair fair poor
4 50-200 good good good
4 210-240 good good fair
4 250-390 fair fair fair
Table 24
ITG QoS levels (Part 2 of 4)
Note:
The QoS levels are equivalent to the following MOS values: (See page 56 for more details)
• excellent 5
•good 4
•fair 3
•poor 2