I agree. My take is below and could indicate that Infinity may work before the voice service is restored. (edit : I see from the OP that this is correct!)
LLU Customer to Cab to MDF to LLU equipment
Infinity Customer to Cu Cab to Fibre Cab To Cu Cab to MDF to BT Voice equipment.
1. To move the termination in the exchange from Sky to BT. (By Openreach)
2. Port the number between operators and enable the voice service on BT. (BTRetail and Sky)
3. Then go to the cab and do the normal work (Openreach)
Where 1 & 3 may be different engineers.
I can see the potential that if 1 has happened and 2 has not that the person doing 3 will not be able to contact the customer and will 'fail' the appointment. Hope everybody gives a Mobile number and has it turned on!
2. Requires both Sky and BT to complete work so also has the potential to take some time to complete, certainly between start and finish times of each operator on the same day!
Edited by kitcat (Wed 24-Oct-12 13:53:02)