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18 Topcom Butler 4812 USB VoIP
Topcom Butler 4812 USB VoIP
• Press the Up or Down key repeatedly until ‘VOLUME’ appears on the display.
• Press the Programming key .
• The current volume level used appears on the display.
• Enter a number between 0 and 9 to select the desired ringer volume. Use the number
keypad to do this.
• Press the Programming key to confirm your selection.
4.19 Locking the key pad
If you lock the alphanumeric keypad, it is impossible to dial a telephone number.
Only the Programming key can still be used. ‘KEY LOCKED’ will be displayed on the
display.
• Press the Programming key .
• Press the Up or Down key repeatedly until ‘KEY SETUP’ appears on the display.
• Press the Programming key .
• KEY LOCK‘ appears on the display.
• Press the Programming key .
• The current status of the keypad appears on the display:
– ‘LOCK’: the keypad is locked
– ‘UNLOCK’: the keypad is not locked
• Press the Up or Down key to make your selection.
• Press the Programming key to confirm your selection.
4.20 Turning key click ON/OFF
You can set the telephone to make a sound whenever you press a key.
• Press the Programming key .
• Press the Up or Down key repeatedly until ‘KEY SETUP’ appears on the display.
• Press the Programming key .
• Press the Up or Down key repeatedly until ‘KEY CLICK’ appears on the display.
• Press the Programming key .
• The current status appears on the display:
– ‘CLICK ON’: turn on key click
– ‘CLICK OFF’: turn off key click
• Press the Up or Down key to make your selection.
• Press the Programming key to confirm your selection.
4.21 The R key (flash)
Press the Flash key ‘R’ to use certain services such as “call waiting” (if your telephone
company offers this feature); or to transfer calls if you use a telephone exchange (PABX).
The Flash key ‘R’ is a brief interruption of the line. You can set the flash time to 100ms or
You can also Press and hold the #-key until KEY LOCK appear. To unlock,
press and hold the #-key again.