RTS RVON-I, User Manual

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3
Specifications
Specifications
Connections
RJ-45 Ethernet
DB-9 I/O Port (8 bidirectional audio and keypanel data; Male)
DB-25 GPI/O Connection (Female)
DB-9 Relay Port (Female)
DB-9 Serial Port
Power
90-240 VAC
Physical
1 RU (height)
19 inches (482.6 mm) wide X 8 inches (203.2 mm) deep
Digital
NOTE : The Playout Delay and Bandwidth depend on the configured amount of audio per packet. The bandwidth values are
for bidirectional audio without VAD (Voice Activity Detection) enabled.
Analog Audio Specifications
Signal Type: Fully differential (balanced)
Nominal Level: 8dBu
Maximum Level: 20dBu
Input Impedance: High (22K
Ω
)
Output Impendance: Low (600
Ω
)
A/D and D/A Specifications
Sampling Rate: 8 KHz
Resolution: 8 bits
Converter Architecture: 128x Over-sampling
Σ
-
Δ
Modulator
TABLE 1.
Digital Specifications
Codec Bit Rate Coding Delay Playout Delay Bandwidth MOS*
G.711 64 125
μ
s 20-60 ms 160-224 kbps 4.3
G.729AB 8 10 ms 20-120 ms 32-112 kbps 3.95
G.723 5.3, 6.3 30 ms 60-120 ms 29-45 kbps 3.5, 3.9
*MOS (Mean Option Score or ACR (Absolute Category Rating) is a widely known voice quality measuring method. The scale ranges from 5
(excellent) to 0 (unacceptable). The typical desirable range for VOIP transmission is from 3.5 to 4.2.