Refer to the exhibit. In an active SIP call between phone user A and phone user B, phone A initiates a call transfer to phone user C. Which two scenarios are correct? (Choose two.)

Question

Options

• APhone_A sends a SIP-REFER message to the Cisco Unified Communications Manager with Phone_C information in the Refer-To section.
• BPhone_B sends a SIP-REFER message to the Cisco Unified CM with Phone_C information in the Refer-To section.
• CAs soon as Phone_A presses the Transfer button for the first time, Phone_B hears the MOH and the MOH audio is chosen from Phone_B User Hold MOH Audio Source settings.
• DAs soon as Phone_A presses the Transfer button for the first time, Phone_A hears the music on hold and the MOH audio is chosen from Phone_A Network Hold MOH Audio Source settings.

• A
  73% (33)
• B
  16% (7)
• C
  7% (3)
• D
  4% (2)

Explanation

Answer A is correct: In a SIP consultative or blind transfer, the transferring party (Phone_A) sends a SIP REFER message to Cisco Unified Communications Manager. The REFER message contains a Refer-To header specifying the transfer target (Phone_C). CUCM then handles bridging Phone_B to Phone_C. Answer B is incorrect because Phone_B does not send the REFER - it is Phone_A that initiates the transfer. Answer C is incorrect because when Phone_A first presses Transfer (placing Phone_B on hold), Phone_B hears MOH from the Network Hold audio source, not User Hold - User Hold applies when the user manually presses the Hold button. Answer D is incorrect because it is Phone_B (the held party) that hears MOH, not Phone_A, and the source is Network Hold.

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