Telephone operation
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Options while on calls
Temporary tone dialing
If you have pulse (rotary) service only, you can switch from pulse to 
touch-tone dialing temporarily during a call. This is useful if you need 
to send touch-tone signals to access your telephone banking or long 
distance services. 
1.  During a call, press TONE .
2.  Use the dialing keys to enter the desired number. The telephone 
sends touch-tone signals.
3.  The telephone automatically returns to pulse dialing after you 
end the call.