From menu:
Step 1.Press Menu button, and then choose 5black list.
Step 2.Choose NewEntry, and then add one black list according to the prompt.
From Webpage:
Step 1.Log in the web, open Phone/Phonebook webpage, Black List column.
Step 2.Refer to the 7.6.4.1 Black List to add blacklist.
During an active call, pressing the MUTE/DEL button to mute the handset, headset or speakerphone.
This function prevents the person on the active call from hearing what you or someone else in the room is saying; the light behind the button will
illuminate on (green).
To cancel the Mute function, please press the MUTE/DEL button again and the light behind the button will illuminate off.
5.6 Placing a Call on Hold
When IP622 is during one active call:
Step 1.Pressing the hold button to put the active call on hold, then you will hear a dial tone, the remote party will hear the hold music
Step 2.User can input the phone number to make call
Step 3.Pressing the hold button again to release the previously Hold state and resume the bi-directional media.
5.7 Three Way Conference Calls
Step 1.To initiate a conference call, press the HOLD button during an active call and the first call is placed on hold, and you will hear a dial
tone.
Step 2.Dial the second person’s telephone number.