5.0 Voice Quality Results


Service Provider: Junction Networks
Software Revision: Asterisk 1.6.2
Micro PBX Hardware: Shuttle K4500-RS
VoIP phones: Grandstream GXP-2000 ver 1.2.2.19

5.1 uPBX Voice Quality Results
ServiceProvider
Side
MOS
Noise
Gain
Codec
Delay
PSTN Baseline
PSTN
4.26
13 dBrnC
-16 dB
PCM
2.1 ms
Junction Networks
PSTN
3.91
15 dBrnC
-12 dB
G.711
433.3 ms
Junction Networks
uPBX
4.0
14 dBrnC
-20 dB
G.711
436.9 ms
VoipVoip
uPBX
3.90
11 dBrnC
-20 dB
G.711
283.3 ms
VoipVoip
PSTN
3.95
13 dBrnC
-19 dB
G.711
283.3 ms

See RFC 2119 for definitions of the IETF Requirement Levels
http://www.ietf.org/rfc/rfc2119.txt (external link)


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