i found this on a Jeep site, they use many of the same radios as the Rams do
i thought that, the RER 730N has a Uconnect module within the unit
but read for yourself, it came from this site, maybe you can figure it out
UConnect Hands Free Bluetooth - All versions of the MyGIG RER navigation radios feature UConnect built-in
(a wiring harness is required for operation, see "Upgrading" section below). The non-navigation versions of the MyGIG radio (model REN) do not have UConnect built-in, but will interface with the factory UConnect system, if equipped. UConnect is the exclusive voice-activated, hands-free, in-vehicle communications system. It encourages safe vehicle operation and doesn't compromise driver control. UConnect allows you to dial your wireless phone through simple voice commands. In addition, UConnect mutes your radio before receiving or sending a call, allows you to store up to 32 names and four numbers per name (128 entries) in the system's phonebook, and is flexible enough for an entire family (up to five phones can be linked to the system). UConnect includes Bluetooth technology that enables your wireless phone to connect to your vehicle without wires or a docking station. This leading edge technology will allow you to store your wireless phone anywhere in the vehicle.
The UConnect™ system is fully integrated with the vehicle’s audio system. The radio display will be used for visual prompts from the UConnect™ system such as phone battery status, signal strength, caller ID, and call type. NOTE: Your phone may not support all available UConnect™ features. Refer to your vehicle owner’s manual for UConnect™ system operating instructions.