Topcom Butler 2551 Deluxe
3.7. CONFERENCE CALL
Only possible when more then one handset are registered to the base!!
You can converse simultaneously with an internal correspondent and an external correspondent. When you are on line with an external correspondent:
1.Press INT
2.Enter the number of the internal handset that you want to call
3.When the internal correspondent picks- up, press and hold 
4.If the internal correspondent does not answer, press INT again to reconnect to the external correspondent
3.8 DISPLAY OF CALL DURATION
The call duration is displayed after 15 seconds, in minutes - seconds,:
At the end of each call, the total call duration is displayed for 5 seconds.
3.9 MICROFOON MUTE
It is possible to mute the microphone during a conversation.
Press 
during the conversation, the microphone is then deactivated, you can talk freely without being heard by the calling party.
“MUTE” is displayed. Press 
again to return to normal mode.
3.10 PAUSE KEY
When dialling a number you can add a pause between two digits by pressing the redail/pause 
key for 2s.
3.11 CALLER IDENTIFICATION
Caller identification is only available if you have subscribed to this service with your telephone operator. When you receive an external call, the callers number will appear on the display as the telephone rings.
If the network sends it, or if the name of the caller is in the address book, the caller is identified by his or her name.
The caller identity is replaced by the call duration after 15 seconds in communication. It is still possible to display the caller’s identity after this time by pressing
3.11.1 List of calls
Your telephone keeps a list in memory of the last 20 calls received. This function is only available if your are subscribed to the caller ID information. The correspondents that have called are identified by their telephone number or name in the same way as in caller identification.
The presence of new / unanswered calls is indicated by the flashing 
-icon
1.Press 
. If there are no calls in the list ‘EMPTY’ will appear.
2.Scroll through the calls using the up 
or down 
arrows. The callers names will be shown if the name is send by the network or is stored in the phonebook. If you are at the end of the list you will hear a beep tone.
3.If you press OK, the telephone number will be shown. Note: if the telephone number is longer then 12 digits, press OK again to see the complete number.
4.Press OK again to see the time and date when the call is received**
5.Pressing OK again will give you the option to delete or add this entry in the phonebook if it’s not already stored:
•Select ‘ADD’ and press OK. Enter or modify the name and press OK. The entry will be stored in the phonebook and deleted from the call list!
•Select ‘DELETE’ and press OK to delete this entry, or to return to the previous menu.
6.To call back a correspondent, simply press the key 
when their telephone number or name are displayed.
If a caller is in the phonebook, they are identified by their name in the list of calls.
**ONLY WHEN THE NETWORK SEND THE TIME/DATE TOGETHER WITH THE TELEPHONE NUMBER!!! On networks with caller ID in DTMF, no time and date will be displayed.
3.11.2Delete all entries in the call list You can delete all entries in the call list:
• Enter the call list by pressing the 
-Key
• Press 
and ‘DEL ALL’ appears.
• Press OK to delete all entry, or 
to cancel the delete operation.
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