Version 6.2 485 February 2011
SIP User's Manual 8. IP Telephony Capabilities
The flowchart below illustrates the classification process:
Figure 8-48: Classification Process (Identifying IP Group or Rejecting Call)
8.4.3.3 SBC IP-to-IP Routing
The device's SBC application employs a comprehensive and flexible routing scheme:
Routing rules according to Layer-3/4 and SIP characteristics
Routing to different destination types:
• Request-URI (of incoming SIP dialog initiating requests)
• Specific destination IP address (based on IP address, host name, port, transport
type, and/or SRD). Routing to a host name can be resolved using
NAPTR/SRV/A-Record.
• Specific FQDN (NAPTR/SRV/A-Record Resolutions)
• Registered User Contact listed in the device's database (only for USER-type IP
Groups)
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