Panasonic VA-12020 Operating Instructions Manual page 29

By pressing FLASH key, you can terminate an outside or intercom call.
Having terminated an outside call, you are once again automatically connected to an
outside line.
If you wish to make a call immediately after another, without replacing handset press
FLASH key and dial.
When you want to answer a call waiting which rings, press FLASH key.
Even if the telephone line is a rotary dialing system (dial pulse), you can send out DTMF
tone signals.
By pressing the * key after dialing telephone number, call is transmitted by tone signals.
Replacing the handset on the cradle will automatically return the telephone to its original
dial pulse line signaling.
The intercom dial tone heard from the handset or speaker can be silenced.
By repeating the suspending operation, the intercom dial tone is made to sound once
more.
1. Make a call on dial pulse line
2. Press dial key *
* The call is transmitted by tone signals.
1. Press ON/OFF key
2. Press dial keys #51#
3. Press ON/OFF key
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