That looks good but I would like to use my existing Verizon phone. The Xlink device linked to above uses BlueTooth to connect to an existing cell and there is no need to have a new service and fees. However the Xlink is a no-go since it says right in the description that it won’t work for things like fax machines.

My main concern is will the POTS to Cell device CDMA handle the communications of the conference boxes while using my existing equipment. Sounds like a challenge but I like to piece things together.