Question: In CAMEL Phase X, when the gsmSCF is inaccessible during an MO-SMS Service, how does the smsSSF proceed with Short Message processing after aborting the interaction via an abort to TC?
Option 1: By applying a universal default routing rule to all pending SMS messages.
Option 2: In accordance with the Default SMS Handling parameter of the MO-SMS-CSI.
Option 3: By sending a failure notification to the sending mobile party and discarding the message.
Option 4: Through an automatic retry mechanism to reestablish the TC dialogue.
Explanation: This is because, as specified in error handling procedures for CAMEL Phase X, when the gsmSCF is not accessible, the smsSSF instructs the MSC or SGSN to proceed based on the predefined Default SMS Handling parameter configured within the MO-SMS-CSI, ensuring continuity of service according to preconfigured network behaviors.