220 Plantronics stopped working

Do you mean it "can" or can't connect to your CU920?
If your CU920 is already paired to a computer or other device this first pairing must be stopped before the steps below will work.
On the Bluetooth headset: 1. Turn your headset ON. 2. Hold down the headset power button until the power indicator light blinks an alternating red & blue.

Then using your CU920.... 3. Turn Bluetooth ON, 4. Search "New Device," 5. Under "devices found" select your headset. 6. Select "Add." The CU920 will ask for a passcode. 7. Enter "0000" (four zeros) the default for the Explorer 220.
The Plantronics earpiece should automatically "pair" with your CU920.

Well I got it working, of course, try turning the phone off on again instead of just the bluetooth, it worked. I should have done that before posting the question.

try the code 0000

I have a Plantronics headset as well. If it stops charging it means it's time to buy a new one. If it's still under warranty however you should get a hold of plantronics to see if they can replace it because then it would be considered defective. Here is their number: (800) 544-4660 they also offer online chat at their website www.plantronics.com

Passkey is "0000"

Explorer 230 went into solid blue light the second time I used it. Fixed mine by letting the headset go completely dead and re-charged and it appears to work fine now.

I took mine back to Best Buy...I think it was a faulty bluetooth...the new one has worked for the past week...good luck!

PLANTRONICS EXPLORER 220

how old is your treo this headset uses bluetooth 2.0

I too have been having problems with Vision and live in the NE Atlanta area. When I first purchased my Treo 600, it provisioned instantly once I had Vision activated. It worked perfectly for about 2 weeks and then I picked my phone up one morning and noticed an error (The famous error 3000). To make a long story short, I spent 2 hours on the phone with a level 2 tech at the end of which he told me to take it to a local store to be reprogrammed. I took it to the Mall of GA store and they "reprogrammed" it and told me to wait 4 hours to try Vision. To my surprise, it started working.... until today. It has only been 5 days since they reprogrammed it and I am getting the error 3000 again. I am planning to take it back to the store tomorrow. This is getting ridiculous. The store said that a lot of people were having to have their phones reprogrammed to resolve Vision problems although the phone CSRs didn't know anything about it. Does anyone have any idea what is going on with Sprint? Is it regional?