Cisco 400-051 Exam

Refer to the exhibit. Which user agent has the recipient role in this SIP REFER call transfer?

  • A. user agent A
  • B. user agent B
  • C. user agent C
  • D. user agent B and C
  • E. user agent A and B
Answer: Option B.
Explanation: 

The Refer method has three main roles:
Originator — User agent that initiates the transfer or Refer request.
Recipient — User agent that receives the Refer request and is transferred to the final-recipient.
Final-Recipient — User agent introduced into a call with the recipient.
Reference: http://www.cisco.com/c/en/us/td/docs/ios_xr_sw/iosxr_r3-4/sbc/configuration/guide/sbc_c34/sbc34stx.pdf

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