Why dont I get a dial tone. ?

if you have no dial tone , you have no line to the exchange
it can be from the call cancel switch ( hang up button) or an extension that is not hung up properly
It could be an external problem so you will have to get the service provider to check the line from the building out
As that may require you to pay if it is not faulty, try borrowing a phone and plugging it into the wall socket for the phone
If you get a dial tone on the borrowed phone , it is your phone but if there is still no dial tone , it very well could be a service provider problem

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.

Is the base station plugged into the phone jack on the wall?

unplug it and plug it back in

hand set no dail tone cant all out on the hand set due to no dail tone

All you have to do is put the phone that does not get a dial tone on the MAIN CHARGING BASE for 20 seconds! it will then sync up!

Good luck!

With the 6.0 gig set, the phones in the box are already registered. The manual tells us how to de-register and register. You might want to consult that part of the manual.

I have found this free link on BT site for you
http://www.shop.bt.com/content/uni2/documentation/498n/025455.pdf

If the second handset works ok on the base and the first handset doesn't, then you are right...the fault lies with the first handset. There are batteries ( special type ) in the handset, it sound as if either the batteries are dead, or not charged ( try charging them for 12 hours on the good base station ) or the connection is bad.