FTTC migrations GEA isp's.

I have read various comments including ones about sky having set amount of ports in each cabinet.

Is that true or is it the case there is available ports in the cabinet for all isp on a first come first served basis?

So basically if I put in a migration to eg. sky would I stay on the same port and its just a reroute onto sky's backhaul at the exchange?

Never heard that rumour before

There have been cases reported where Sky fibre was originally available but becomes unavailable a few months later yet it's still possible to order from BT. This is probabaly where the rumours originated from.

Probably where sky's backhaul was under pressure and getting congested so they stopped taking orders.
ISP's/CP's cannot reserve ports, they are allocated by Openreach on receipt of an order on a 1st come 1st served basis.

In reply to a post by Chrysalis:

I have read various comments including ones about sky having set amount of ports in each cabinet.

Is that true

No.

There should also be no need for a BT Openreach engineer to go to the cabinet to move you from BT to Sky. This should be a simple remote config change. Not sure how they do it but should be as simple as changing the VLAN ID on your port.

Is that true or is it the case there is available ports in the cabinet for all isp on a first come first served basis?

"Equivalence of Inputs" requires no discrimination by Openreach.

Conceptually BTw could retain a circuit on a full cabinet to re-use I suppose.

This shows that the process may be slightly complex, esp if going to Sky invokes a switch to LLU for voice. If the cease and provide orders didn't get matched you could fall down a hole.