Rejected SIP Calls
IDS Phase 2 provides tools to monitor and record rejected SIP calls. A sudden or gradual increase in such calls can, but need not, indicate malicious intent.
IDS Phase 2 provides a global counter that increments with each SIP INVITE or REGISTER message that is rejected by the Acme Packet Oracle® Enterprise Session Border Controller, and offers the option of generating a syslog message in response to call rejection.