How do I pair the Savi WO2 base to a Bluetooth mobile phone?

Press and hold the Bluetooth pairing button on the Savi base for three seconds until the Bluetooth indicator light alternately flashes red and blue. Place your mobile phone into discovery mode and 'SAVI' will appear when the phone finds the base. If prompted, enter '0000' as the passcode, and the indicator light will turn solid blue when pairing is complete. (Page 4)