I got my 2820 yesterday.
I did the Bluetooth connection with the Nokia 6680 without problems, put in the code that was required. I got mutual recognition by both machines.
I subsequently connected my 6680 to the Baehr, via a cable and an adaptor. Got a phone call from the dealer, and didn't hear a thing. Took it off Bluetooth, only with the cable, noting. He could hear me, I couldn't hear him.
Today, I connected my old Ericsson to the cable and it does work perfectly. This is the setup that I'm going to travel to France and Switzerland with. Pity I can't use the phone features on the 2820 for it.
When I tried dialling from the GPS with the phone on Bluetooth, it told me to connect a mike to the GPS. There IS a port for that, as well as an audio out port. I wonder if I plug in the wire from Baehr into the microphone port of the GPS wether I could be heard.
Unfortunately, I couldn't find someone to lend me an Ericsson with Bluetooth. I'd have connected it to the GPS, and also via cable. The brand new one I got had a different socket...
My Garmin dealer will get in touch with Baehr, and Garmin and we'll try to find a suitable solution. Stay tuned.
For the rest, I just LOVE the 2820. It's FAST, it's very clear, and the RTM 11 module works like a charm. You can see traffic problems on your screen, just like with a big GPS. Love the display.
Tomorrow it's off to the Vogesen, and the day after to our yearly meet. This year it's in Switzerland, and I'll be extremely happy to meet Reto Gisler, who's going to guide the vast majority of the guys through a fantastic tour on Friday.