Fax and modem support
54
SmartNode 5550 & 4150 Series User Manual
B
• Specifications
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)
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 (incl. Super G3 Fax)
Voice Signaling
SIPv2 and SIPv2 over TLS (licensed feature on SN4150)
SIP call transfer, redirect
Overlap or en-bloc dialing
DTMF in-band, out-of-band
Configurable progress tones
Voice Routing—session router
Local switching (hairpinning)
Least cost routing
Interface huntgroups
Call-Distribution groups
Number blocking
Call Routing Criteria:
•
Interface
•
Calling/called party number
•
Time of day, day of week, date
•
Wildcard and regular expression matching