PGW: Blind transfer ringtone cannot be heard

Problem Summary	When a caller is blind transferred to another IP agent, the caller cannot hear the ringtone media playing. If the destination agent does not answer, after a period of time the call eventually drops. An IP agent (via a Cisco Unified Communications Manager (UCM) managed IP phone) blind transfers a PSTN caller to another IP agent.
Error Message	N/A
Possible Cause	The MGCP message interpretation behavior is incorrect on the IOS Media Gateway and additional configuration is needed.
Recommended Action	1. Configure the proper IOS Media Gateway MGCP settings for MGCP message behavior. mgcp behavior mode-attrb-in-sdp disable no voice-fastpath enable mgcp behavior mdcx-sdp ack-with-sdp
Release	PGW 9.8(1)
Associated CDETS #	None

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