Here's the gadget.
The battery replacement device goes into AT&T remote. When you use AT&T to transmit RF to U-verse box it works as normal.
When you use the AT&T to transmit IR commands to Panasonic, it works in place of the stock TV controller. (These commands are mute, vol up, vol down and on / off.)
When you turn volume up and down for TV, the IR controls TV (already stated) but the battery replacement device also sends RF signal to the extender box that flashes IR to the receiver sensor that will power existing in wall speakers.
http://www.nextgen.us/ProductDetails.asp?ProductCode=remoteextenderplus
In theory a totally seamless operation using same buttons as the other two remote in other rooms. She has nothing new to learn or change habit about. All three AT&T remotes in each room perform the same function with three TV's and enhanced sound in living room. (I hope).
The battery replacement device goes into AT&T remote. When you use AT&T to transmit RF to U-verse box it works as normal.
When you use the AT&T to transmit IR commands to Panasonic, it works in place of the stock TV controller. (These commands are mute, vol up, vol down and on / off.)
When you turn volume up and down for TV, the IR controls TV (already stated) but the battery replacement device also sends RF signal to the extender box that flashes IR to the receiver sensor that will power existing in wall speakers.
http://www.nextgen.us/ProductDetails.asp?ProductCode=remoteextenderplus
In theory a totally seamless operation using same buttons as the other two remote in other rooms. She has nothing new to learn or change habit about. All three AT&T remotes in each room perform the same function with three TV's and enhanced sound in living room. (I hope).