AudioCodes 400HD Series User's And Administrator's Manual page 28

CHAPTER 3 Starting up
Setting
Modify
network
These virtual keyboards are also displayed when network administrators
need to enter an IP address to debug, or when they need to enter their
PIN lock for the security tab.
Enables the Admin user to determine network information and to
modify network settings.
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C448HD and C450HD | Users & Administrator's Manual
Description