Which out-of-dialog SIP OPTIONS ping response put dial-peer tag 1111 into its current operational state?

Refer to the exhibit.

400-051-ccie-collaboration_img_179
Which out-of-dialog SIP OPTIONS ping response put dial-peer tag 1111 into its current operational state?
A. 401 Unauthorized
B. 505 Version Not Supported
C. 406 Not Acceptable
D. 482 Loop Detected
E. 500 Server Internal Error

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One thought on “Which out-of-dialog SIP OPTIONS ping response put dial-peer tag 1111 into its current operational state?

  1. B is correct.

    There are 3 things that will put the dial-peer into busy-out.
    503 service unavailable
    505 sip version not supported
    no response

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