Voice connectivity
37
SmartNode 4970A User Manual
B
• Specifications
Note
Refer to the software feature matrix for the most up-to-date specifications.
Voice connectivity
4 PRI T1/E1 ports on RJ48C connectors (1 port PRI T1/E1 - See SN4170 series)
Net/User configurable per port
Each port can be slave or master clock
Each port can be used to synchronize to an external clock master
Failover relay between ports 0/0–0/1 and 0/2–0/3 for specific models (/R in SKU code)
Data connectivity
One 10/100/1000Base-Tx Gigabit Ethernet port
All ports full duplex, autosensing, auto-MDX
Voice processing (signaling dependent)
Up to 120 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 (128 ms)
Up to 120 simultaneous 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)
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