Motorola H700 Headset Pairing

Just in case someone else finds this useful:
We had trouble getting Motorola H700 headsets (we have several) to pair after a while. With multiple mobile phones in the house, we often mix and match headsets with phones. After searching on google, I tried the following, that seemed to work:

1. make sure the phone is ready to pair
   
2. With the boom closed, hold the call button on the headset until it flashes purple
3. flip open the boom
4. tell the phone to find devices