Finally figured out how to pair the Motorola H700 bluetooth headset to a blackberry.
Pair the devices as normal, hold down the connect button on headset until steady purple light comes on, then open the boom. Search for bluetooth devices on the blackberry. When asked for a pin, use 0000. Now the H700 will show up in the bluetooth device list, but it will not connect.
Put the headset in pairing mode again, this time go to the h700 listed on the blackberry and select connect. Now the devices will work as normal. When you open the boom on the h700, it will connect to the blackberry.