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Data Connectivity
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SmartNode 5481 & 5491 User Manual
B
• Specifications
Data Connectivity
Two 10/100/1000Base-Tx Gigabit Ethernet ports
All ports full duplex, autosensing, auto-MDX
Voice Processing (signaling dependent)
Up to 64 full-duplex transcoded VoIP calls using the following CODECS:
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G.711 A-Law/μ-Law (64 kbps)
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G.726 (ADPCM 16, 24, 32, 40 kbps)
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G.723.1 (5.3 or 6.3 kbps)
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G.729ab (8 kbps)
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Transparent ISDN data
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G.711 or T.38 fax calls
G.168 echo cancellation (128 ms)
DTMF detection and generation
Carrier tone detection and generation
Silence suppression and comfort noise
Adaptive and configurable dejitter buffer
Configurable tones (dial, ringing, busy)
Configurable transmit packet length
RTP/RTCP (RFC 1889)
Fax and Modem Support
Automatic fax and modem detection
Codec fallback for modem-bypass
T.38 Fax-Relay (Gr. 3 Fax, 9.6 k, 14.4 k)
G.711 Fax-Bypass
Voice Signaling
SIPv2, SIPv2 over IPv6, SIPv2 over TLS
SIP call transfer, redirect
Overlap or en-bloc dialing
DTMF in-band, out-of-band
Configurable progress tones