Paging using a Valcom V-2001A and a Grandsteam HT286

I upgraded my system to use a PRI. Before I had a digium card that I plugged my valcom into and the paging seemed to work. This time I setup an HT-286 as an extension and plugged that in. The problem is it keeps sound like it is trying to get on hook over the loud speaker. I wasn’t sure if anyone has done this before? Maybe I don’t want it setup as an extension? Thanks for your help.