T57W with DD10K Registration Failed for Handset

[dmmincrjr]

I wanted to post an update in case anyone else might experience this issue. I had submitted this problem to Yealink support and they could not find anything in the logs to show the cause of the problem. I ended purchasing another DD10K and plugged it into the phone and attempted to register the handset and it worked flawlessly on the first try. The original DD10K must be defective so am returning. Yealink support asked me to put the phone into SIP-CCPhone as part of troubleshooting and it was in this mode when the handset registered. I have not tried changing to DECT-DDPhone since everything is now working.