I have SIP J169 endpoints setup and several to various administrative assistants that have bridged lines of their professionals. With the handset on the cradle they can press any of the bridged lines and get dialtone and then pick up the handset. If they lift the handset first they are unable to then select any of the bridged lines to switch the dial tone over to that line. The calling box appears on the screen as soon as you lift the handset. Is there a setting that relieves this? I went through all the settings on the actual phone and there was nothing.