Grandstream Networks WP820 Administration Manual page 10

Display the list of the registered contacts and also the groups contacts with the ability of searching, adding, or editing
Contacts
the entries and also deleting the selected contacts. The maximum number of contacts is 1000.
Display the call history: Missed Calls, Accepted Calls, Outgoing Calls or All Calls. You can add contacts to Shared
Call History
Contacts directly from call logs.
SMS stands for Short Message Service and referred to as a "text message". With a SMS, you can send a message by
SMS
pressing "New" of up to 160 characters to another device or check the received ones.
● Play Message: Play voice mail messages received.
Voice Mail
● Set Voice Mail: Configure voice mail parameters.
● LCD diagnosis
● LCD off
● LED diagnosis
● Keypad diagnosis
● Audio loopback
● Acceleration sensor
● Sensor calibration
Diagnostics
● Proximity sensor
● Vibrator
● Certificate Verification
● Traceroute
● Ping
● NSLookup
● One-click Debugging
Figure 5: WP820 Menu Structure