Voice signaling
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SmartNode 4900 Getting Started Guide
B • Specifications
Fax over IP (FoIP)
T.38 Fax relay (9.6 k, 14.4 k)
Voice signaling
H.323v4:
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RAS, H.225, H.245
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Fast-connect, early H.245
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Gatekeeper autodiscovery
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Alias registration
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Overlap sending
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Empty capability set (call transfer, hold)
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H.323v1 call transfer, hold
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H.323 GW and GK compatible
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H.323 Annex M3
SIP:
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SIPv2 (RFC3261, RFC3263)
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SIP call transfer, redirect, DTMF relay
Voice routing-session router
Local switching; Interface huntgroups
Routing Criteria:
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Interface
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Calling/called party number
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Time of day, day of week, date
Number manipulation functions:
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Replace numbers; Add/remove digits
•
Multiple remote gateways; PLAR
IP services
IPv4 router; RIPv1, v2 (RFC 1058 and 2453)
Programmable static routes
ICMP redirect (RFC 792); Packet fragmentation
DiffServe/ToS set or queue per header bits
Packet Policing discards excess traffic
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