Call Waiting/Call Hold; Mute; Figure 35: Black/White List; Figure 36: Black/White List - Grandstream Networks GXP2130 User Manual

When Do Not Disturb feature is turned on, it will allow users to ban phone number by adding the number
into the blacklist, or on the other hand, allow phone numbers to come in during DND mode by adding the
number into the whitelist.
This can be done from the webGUI or under "Phonebook  Contacts" by adding a user into either the
"Blacklist" or "whitelist" as shown below.
Or users can add a contact to "Blacklist" or "Whitelist" from the phone LCD under "Menu  Contact 
Local Phonebook" as shown below.

Call Waiting/Call Hold

•
Hold. Place a call on hold by pressing the HOLD button. The active LINE key will blink in green;
•
Resume. Resume call by pressing the blinking LINE key;
•
Multiple calls. Automatically place active call on hold or switch between calls by pressing the LINE key.
Call waiting tone (stutter tone) will be audible on new incoming call during the active call.

Mute

During an active call, press the MUTE button to mute/unmute the microphone. The LCD will show the Mute
icon on the top of screen, when the call is muted.

Figure 35: Black/White List

Figure 36: Black/White List

GXP21XX User Guide
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