Refer to the exhibit. There is a call flow between Phone A and Phone B Phone B (holder) places Phone A (holder) on hold. Which MRGL and Audio Source are played to Phone A?

While MRGL A is the correct MRGL for Phone A, Audio Source 4 is not necessarily the one selected if Audio Source 2 is the specified or available option within MRGL A.

MRGL B would be associated with Phone B, the holding party, not Phone A, the held party, thus making the MRGL selection incorrect.

MRGL B would be associated with Phone B, the holding party, not Phone A, the held party, thus making the MRGL selection incorrect.

When one party places another on hold in Cisco UCM, the Music On Hold (MOH) is streamed from the MOH server that is associated with the Media Resource Group List (MRGL) configured for the *held party*. Therefore, Phone A's MRGL (MRGL A) is used to determine and play an available MOH Audio Source (Audio Source 2) to Phone A.