14 Topcom Butler 3300/Twin/Triple/Quattro
Topcom Butler 3300/Twin/Triple/Quattro
8 Call transfer and Intercom between two handsets

8.1 Call transfer and conference call during an external call

• During an external call, press the INT key followed by the number (1-4) of the other
handset.
• The other handset will start to ring:
– When the other handset takes the line you can talk internally.
If you hang up, the external line will be connected with the other handset.
If you press and hold the INT key for 3 seconds you can talk with the 2nd handset
and external line at the same time (conference call)
– Or press the INT key again to return to the external call.
• Press the Line button to end the call.

8.2 Internal call (intercom)

• In standby press the INT key followed by the number (1-4) of the other handset.
• The other handset will start to ring. You can stop the ringing by pressing the line
button .
• If the other handset answers the call by pressing the Line button you can talk
internally.
• Press the Line button to end the call.
9 Troubleshooting
Problem Possible cause Solution
No Display Batteries not charged Check the position of the
batteries
Recharge the batteries
No dialling tone Telephone cable not
properly connected
Check the connection
of the telephone cable
Volume of conversation partner
too low
Adjust the volume during the
conversation by pressing the
volume key
Handset ringer volume too low Adjust the ringer volume
Not possible to dial a number Wrong dial mode See §5.13 to set the correct dial
mode
You can only remove existing handsets and others then the one you are
using.
These functions only work when more then one handset (like a Twin/Triple/
Quattro version) is registered to the base!