I’m rather surprised that your service provider has given you no details. Who are they? They should tell you exactly what will be required, but in general
(for late on a Saturday night)the service delivery options are either:
1. Fully managed service - where your service provider issues a fully configured and henceforth managed router that takes the connection from the Adva and presents the service that you then connect to your network. This will be something like a Cisco or Juniper box.
2. A “wires only” service where the network boundary is the SFP port on the Adva. You have to supply everything to connect up to that point and configure your associated IP address ranges and/or VLANs.
On the latter service it is typical to get a single mode optical handoff, but multi mode is also a possible handoff option - and will be specified at the time of service order. The optical connection will be duplex LC physically so you need to a duplex LC patch lead running to your own router, if it’s a wires only service. Openreach supply the SFP in the Adva and you simply plug your patch lead into it.
I won’t bother complicating the reply with other (unofficial) connectivity options. Life is generally easier if you just provide and equivalent single mode or multi mode as the case may be on your router interface.
I feel like there will be more questions and answers. So I will leave it there for now.
Edited by Pheasant (Sat 01-May-21 23:33:01)