1. To add another call while on a call, dial the desired number then press the Call key.
   
2. Once the call is connected, press the Left Soft key.
   
3. To merge the calls, scroll to Conference call, then press the Center Nav key.
   
4. To place a call on hold, scroll to Swap, then press the Center Nav key.
   
5. To disconnect one call, scroll to End call, then press the Center Nav key.
   
6. To disconnect all calls, scroll to End all calls, then press the Center Nav key.