Transferring a call works but the W52P hears a busy signal

I have a W52P registered to a Cisco router running CallManager Express (CME). Everything appears to work fine, but when a user transfers a call to another user, after the transfer is completed the screen of the W52P says "Call Transferred" but there is a busy signal for about 5 seconds. The transfer goes through just fine and the other parties don't hear anything unusual. Other phones do not have this problem, only the W52P. The users are concerned that the transfers are not happening even though they do go through successfully.





I have attached the SIP messages that occur during the transfer. In this example, I transfer a call from 203 to 201. The W52P is 202.

Any help is greatly appreciated!

  SIP-Logs.txt (Size: 11.01 KB / Downloads: 2)