cannot
Total Care. Faults fixed by end of next day 365 days/year. "Day is
0800 to 1800 (might be later). But once they start working on the fault they'll finish even if it goes past the notional "end of day" time.I dislike the fact you can't report a fault online you have to go via residential faults in Mumbai and jump through all the muppet filtering. I have had one try and make an appointment for 3 working days ahead until I mentioned Total Care. That puts you on hold presumably while they talk to the BT Openreach regional center to make the appointment.
Had ISDN as there was no ADSL or "Home Highway". When ADSL came a long and I decided to drop the (expensive) ISDN, boy was it a battle transfering the "business" ISDN base number to a "residential" POTS line. Very easy to port two of the MSNs to a VOIP provider though.