OCCAS Performs Extra Address Lookup for Outbound INVITE When To Header is Non-Numeric
Last updated on MAY 21, 2014
Applies to:Oracle Communications Converged Application Server - Version 5.0.2 and later
Information in this document applies to any platform.
While sending outbound INVITE message Oracle Communications Converged Application Server (OCCAS) is performing extra Domain Name Server (DNS) look of type "A" (Address lookup).
This happens when "To" header of outgoing INVITE message is set to non-numeric sip URI with one of below conditions.
1.) Transport parameter specified
2.) Transport parameter NOT specified
Examples of "To" header with sample DNS trace is as per below.
Case 1: Transport Parameter Specified :
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