DSP
43
SmartNode 4170 User Manual
B
• Specifications
Note
Refer to the software feature matrix for the most up-to-date specifications.
DSP
Two 16 channel DSP
Voice Connectivity
1 ISDN PRI port, 4-wire
RJ45 port NT/TE configurable per port (layer 1 pin-out does not change)
Data Connectivity
Two 10/100/1000Base-TX Ethernet ports (SN4171/2ETH)
One 10/100/1000Base-TX Ethernet port (SN4171)
Full duplex, autosensing, auto-MDX
Voice Processing (signalling dependent)
15 to 30 full-duplex channels with Voice CODECS:
•
G.711 A-Law/-Law (64 kbps)
•
G.722 (64 kbps)
•
G.726 (ADPCM 16,24,32,40 kbps)
•
G.723.1 (5.3 or 6.3 kbps)
•
G.729ab (8kbps)
•
Transparent ISDN data
G.168 echo cancellation (128ms)
15 to 30 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, etc.)
Configurable transmit packet length
RTP/RTCP (RFC 1889)
SRTP (RFC 3711)
