Plantronics Calisto Pro Troubleshooting- Registering your handset with the charging base Registering your Plantronics Calisto Pro handset with the charging base:Your handset comes pre-registered with the base. If the handset screen displays “Searching for base” even when the handset is on the base and the AC power adapter and phone cord are properly connected, follow these steps to re-register the handset with the base. 1. On … Continued