Phonak iCom bluetooth to landline

I picked up my new Solana aids and the Icom today. The Icom worked well with a Vtech LS5146 Bluetooth enabled cordless phone (around $35 on Ebay) to make and receive landline calls. However the connection breaks up if I leave the room. My question: is it possible to have several LS5146 base units around the house, all connected to the same phone line ? would the Icom be handed off as I moved from room to room ? Anyone explored this idea?

Dick in Norfolk