Fax and modem support, Voice signaling

SmartNode 4400 Getting Started Guide	B • Specifications

•G.729ab (8 kbps)

•Transparent pass through

•G.168 echo cancellation

•8 parallel voice connections

•DTMF detection and generation

•Carrier tone detection and generation

•Silence suppression and comfort noise

•Conﬁgurable dejitter buffer

•Conﬁgurable tones (dial, ringing, busy)

•Conﬁgurable transmit packet length

•RTP/RTCP (RFC 1889)

Fax and modem support

G.711 transparent FAX

Fax over IP (FoIP)

T.38 Fax relay (9.6 k, 14.4 k)

H.323v4:

•RAS, H.225, H.245

•Fast-connect, early H.245

•Gatekeeper autodiscovery

•Alias registration

•Overlap sending

•Empty capability set (call transfer, hold)

•H.323v1 call transfer, hold

•H.323 GW and GK compatible

•H.323 Annex M3

•SIPv2 (RFC3261, RFC3263)

•SIP call transfer, redirect, DTMF relay

Fax and modem support