New Calls on Polcom uses secondary Extension

Hello Community,

We have a few phones with two Extensions, buttons are setup as follows:
(We needed for these phones a secondary extension for outgoing CID, Voicemail, Etc.)

Line - 101
Line - 101
Line - 101
Line - 101
Line - 101
Line - 201

Whenever 101 takes a call and places the caller in Park or on Hold, all new calls are automatically placed thru 201.
We have this issue by all phones with two extensions.
Note, we already checked the concurrent call limit on the Extension, and line limit on the Phone.

Thanks