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DSP 44
SmartNode 4630 Getting Started Guide B • Specifications
Note Refer to the software feature matrix for the most up-to-date specifications.
DSP
One or two 4-channel DSP
Voice connectivity
3 or 5 ISDN BRI S0 (S/T), 4-wire RJ45 ports
NT/TE configurable per port
Point-to-point, point-to-multipoint configurable
Life-line bypass relay between BRI 0/0 and BRI 0/1 ports
ISDN line power can be switched on per software per port
Data connectivity
Two 10/100Base-TX Ethernet ports
All ports full duplex, autosensing, auto-MDX
Voice processing (signalling dependent)
Four or eight full-duplex channels with Voice CODECS:
• G.711 A-Law/µ-Law (64 kbps)
• G.726 (ADPCM 16, 24, 32, 40 kbps)
• G.723.1 (5.3 or 6.3 kbps)
• G.729ab (8 kbps)
• Transparent ISDN data
G.168 echo cancellation (25 ms)
Four or eight simultaneous low-bandwidth voice or T.38 fax calls
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)