AudioCodes C450HD - Ending an Established Call

C450HD IP Phone
User's Manual 104 Document #: LTRT-13261
 To silence the ringing of an incoming call:
 Touch the Silent softkey.
Answer a silenced call by pressing the Accept softkey or picking up the handset.
6.7 Ending an Established Call
You can end an established call.
 To end an established call:
 Return the handset to the phone cradle if it was used to take the call -or- press the headset
key -or- press the speaker key -or- touch the End softkey.