Duration Rounding
The duration of the following call types will be rounded up to
the next whole minute:
Operator Assisted Calls (specially assisted) excluding Number
Translation Services e.g. 0845, 0870, 0871, 08xx and
excluding calls to premium numbers e.g. 09xx.
International Calls (including calls to international mobiles
but excluding ISDN 64k and satellite calls e.g Inmarsat)
Calls from Northern Ireland to the Irish Republic
Inland Calls (including g21)
Calls to Channel Islands
Fixed-to-mobile calls (excluding ISDN 64k)
Calls from Private Payphones
Calls to 05xx number range
Geographic calls using ISDN 64k
All other call types will be rounded up to the next whole
second unless otherwise stated in the relevant section of the
Price List.
Call Set-Up Fee
A Call Set-Up Fee of 2.55 pence (exc VAT) will apply to the
following Call Types:
Operator Assisted Calls (specially assisted)
International Calls (including calls to international mobiles)
Inland Calls to numbers beginning 01 and 02 and including
Number Translation Services calls e.g. 0845, 0870, 0871,
08xx and including calls to premium numbers e.g. 09xx.
Fixed-to-mobile calls
Calls from Private Payphones
Calls to 05xx number range
Geographic calls using ISDN 64k
Still slightly ambiguous, but I do read that to mean whole minute rounding doesn't apply to 084/7, but the set-up fee does.
Incindentally, g21 means 05xx VOIP numbers (which, strangely, are also listed separately in the list of numbers whole minute rounding applies to).