Well, cannot find ia5862...but from ia5863 which must be similar; Manual at
http://www.scribd.com/doc/64707312/Vtech-Phone-Ia5863-Manual-r2, it says... Set the dial mode
If you have touch tone service, the phone is ready to use as soon as the battery is charged. If you have pulse (rotary) service, you'll need to change the dial modee• Press
PROG.
• Press o runtil the screen displays
DIAL MODE:
and the current settings• Press
SELECT.
The current setting blinks • Press or to select
TONE
or
PULSE.
• Press
SELECT
to save
Hope it helps, sounds like the phone should ALREADY be on tone dial out of the box.
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