Heinz wrote: »
You can check if a CPS provider is active on your line by using BT's Charge Advice service:
Lift handset and dial *411# and listen for message. Replace handset.
Make a UK 01/02 call. If the exchange automatically calls you back immediately afterwards with the approx cost of the call, you're on BT. If there's no immediate call back, the call has gone over the CPS.
You can switch off BT Charge Advice with #411#
There is no need to use the 1280 prefix when switching Charge Advice on or off (even after the CPS has gone live).
Here’s how to extend them
They’re normally £10
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