Thanks Pheasant. Would one OLT typically service multiple ISP customers? Residents in my road are on Sky, BT, and Vodafone having intermittent drops.
A single OLT chassis can potentially serve multiple thousands of customers over a wide area. Not just a street or two but many suburbs /areas. At a local level you and your neighbours are typically connected to the same single PON (passive optical network) - the common point of which comes back to a single serving optical transmitter at the OLT. There’s typically around 30 customers in Openreach land on a single PON. The system is inherently designed to allow multiple ISP suppliers to connect effectively at the back end feeding the OLT and for any individual subscriber to have access to ‘their’ ISP suppliers on their own fibre connection. It’s a “many to many” shared infrastructure/ system. There can literally and potentially be hundreds of ISPs on one side feeding several thousand customers on the other end all through a single chassis.
So the short answer is ‘yes’ - it is very much possible and how the system is intended to operate.