Cisco 400-051 Exam

Which method does a Cisco unified 9971 Phone use to send keep-alive messages to Cisco unified Communications manager?

  • A. Sccp StationServerReq
  • B. SIP Notify with events set to keep-alive
  • C. SIP register with expires set to zero
  • D. Sccp stationregister
  • E. SIP options
Answer: Option C.

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