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Voice signalling 60
SmartNode 4520 & 4110 Series User Manual B • Specifications
Voice signalling
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
ISDN over IP (ISoIP)
• H.323 GW and GK compatible
• H.323 Annex M3
• ISDN/Q-SIG feature tunneling
• ISDN speech, audio and data (Fax Gr 4, UDI 64, RDI 64)
Voice routing—session router
Local switching; Interface huntgroups
Routing Criteria
• Interface
• Calling/called party number
• Time of day, day of week, date
• ISDN bearer capability
Number manipulation functions
• 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
Pocket Policing discards excess traffic
802.1p VLAN tagging