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Refer to the exhibit. Which out-of-dialog SIP OPTIONS ping response put dial-peer tag 1111 into its current operational

Posted: Sat Jul 23, 2022 7:00 pm
by answerhappygod
Refer to the exhibit.

Which out-of-dialog SIP OPTIONS ping response put dial-peer tag 1111 into its current operational state?
Refer To The Ex 1
Refer To The Ex 1 (71.77 KiB) Viewed 55 times
A. 501 Not Implemented
B. 504 Server Time-out
C. 408 Request Timeout
D. 486 Busy Here
E. 503 Service Unavailable