Topcom Butler 4812 USB VoIP
4.2Making PSTN Calls
When making external calls through the handset, base telephone operation is not possible!
4.2.1 External Call
•Press the Line key 
.
•The Line/Charge indicator 
(LED) on the base unit will blink. ‘EXT’ and the Call symbol 
appear on the display.
•You will hear the dial tone. Dial the telephone number you wish to call.
•The number appears on the display and is dialled.
•After finishing your call, press the Line key 
to hang up.
4.2.2 Number preparation
•Dial the telephone number you wish to call. You can correct the number by pressing the Delete/Mute key 
.
•Press the Line key 
.
•The Line/Charge indicator 
(LED) on the base unit will blink. ‘EXT’ and the Call symbol 
appear on the display.
•The telephone number is dialled automatically.
•After finishing your call, press the Line key 
to hang up.
4.2.3Redialling the last number dialled
• Press the Line key 
.
• The Line/Charge indicator 
(LED) on the base unit will blink. ‘EXT’ and the Call symbol 
appear on the display.
• You will hear the dial tone.
• Press the Redial key 
. The number you last called is dialled automatically.
4.2.4Redial one of the last 5 numbers dialled
•Press the Redial key 
.
•Select ‘REDIAL’ and press OK
•The number you last called appears on the display. If you would like to dial one of the last 5 numbers dialled, press the Redial key 
a few times until the desired number appears on the display.
•Press the Line key 
.
•The number shown on the display is dialled automatically.
•After finishing your call, press the Line key 
to hang up.
4.2.5 Calling a programmed number from the Phone Book
The telephone has a Phone Book in which you can program the telephone number with name. If you would like to call a number from the Phone Book:
•Press the Phone Book key 
. The first number of the Phone Book appears on the display.
•Press the Up or Down key 
repeatedly to select the telephone number you wish to call.
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