The interface specifications are detailed in SIN360 and SIN492. Until recently the handover from the Openreach NTE was optical only, either 1000Base-SX or 1000Base-LX depending on what was ordered, with the demarcation point being the duplex LC connector - they may not take kindly to their SFP being replaced.

I've not ordered an EAD circuit recently so I don't know if the NTE will switch between SFP and 1000Base-T automatically, or if the copper interface has to be specified in the order.

In reply to a post by tdw42:

The interface specifications are detailed in SIN360 and SIN492. Until recently the handover from the Openreach NTE was optical only, either 1000Base-SX or 1000Base-LX depending on what was ordered, with the demarcation point being the duplex LC connector - they may not take kindly to their SFP being replaced.

I've not ordered an EAD circuit recently so I don't know if the NTE will switch between SFP and 1000Base-T automatically, or if the copper interface has to be specified in the order.

As said above then, the OP may as well just pop the SFP out to check it’s LX, SX, ZX or whatever and buy another matching generic SFP from fs.com and the requisite duplex patch lead.

For the cost of a flat white in London a generic SFP can be had from fs.com, so you may as well buy a pair, and you can be certain they’ll be compatible across the link. The SFP cage won’t tell the demarc. cops at BT

In reply to a post by Pheasant:

The SFP cage won’t tell the demarc. cops at BT

In theory it could. It could be vendor-locked, or they could be monitoring it with DOM and notice the change in device / serial number.

That reminds me, it's worth buying an SFP with DOM. It may be the same price, or only £1 more, but if your router supports it it can give you all kinds of info such as light levels. (Not that over a 1m patch cord it's likely to be a problem)

The cage won't, but the DDM/DOM data might give it away

In reply to a post by candlerb:

In reply to a post by Pheasant:

The SFP cage won’t tell the demarc. cops at BT

but if your router supports it it can give you all kinds of info such as light levels. (Not that over a 1m patch cord it's likely to be a problem)

At light levels over a one metre patch, it will be asking for sunglasses!

It isnt vendor locked at least from the BT end.

My advice is to make sure you have a compatible SFP and make sure you are using your WAN address (should be a /31 subnet) sometimes BT can forget to send this out. If you need that info, call the number on the emails you've been getting and if the person on the phone cant give you that info, ask for the number for the commissioning team

In reply to a post by candlerb:

In reply to a post by Pheasant:

The SFP cage won’t tell the demarc. cops at BT

In theory it could. It could be vendor-locked, or they could be monitoring it with DOM and notice the change in device / serial number.

That reminds me, it's worth buying an SFP with DOM. It may be the same price, or only £1 more, but if your router supports it it can give you all kinds of info such as light levels. (Not that over a 1m patch cord it's likely to be a problem)

All the SFPs I’ve bought from fs have been DOM for ages. If the OP buys a pair of these:
https://www.fs.com/uk/products/75332.html
...and one of these:
https://www.fs.com/uk/products/41730.html

The total (with VAT and shipping) comes to £26.40

Alternatively plug and play is to buy a gigabit DAC cable from Amazon for £20.99:
https://www.amazon.co.uk/10Gtek-Gigabit-SFP-DAC-Cabl...

Sorted for the basic link between boxes. Then just do the WAN ip config

In reply to a post by tdw42:

The interface specifications are detailed in SIN360 and SIN492. Until recently the handover from the Openreach NTE was optical only, either 1000Base-SX or 1000Base-LX depending on what was ordered, with the demarcation point being the duplex LC connector - they may not take kindly to their SFP being replaced.

I've not ordered an EAD circuit recently so I don't know if the NTE will switch between SFP and 1000Base-T automatically, or if the copper interface has to be specified in the order.

Just in the process of getting ours installed today. Again an ADVA FSP150-GE102Pro unit as per the OP. Openreach fibre's not quite installed, so just pulled the SFP's in the NTE out to have a quick squiz.

Network SFP is an Adva 1000BaseBX10 BiDi optics, 1310nm receive and 1490nm transmit with simplex SC presentation.

Access SFP is an Adva 1000BaseLX 1310nm single-mode with duplex LC presentation.

When we're up and running I'll swap out the LX SFP above with a generic 1GB DAC cable direct to our router, to see if the ADVA grumbles.

In reply to a post by Pheasant:

Just in the process of getting ours installed today. Again an ADVA FSP150-GE102Pro unit as per the OP. Openreach fibre's not quite installed, so just pulled the SFP's in the NTE out to have a quick squiz.

Network SFP is an Adva 1000BaseBX10 BiDi optics, 1310nm receive and 1490nm transmit with simplex SC presentation.

Access SFP is an Adva 1000BaseLX 1310nm single-mode with duplex LC presentation.

When we're up and running I'll swap out the LX SFP above with a generic 1GB DAC cable direct to our router, to see if the ADVA grumbles.

Did the generic 1GB DAC work with the ADVA?

In reply to a post by Pheasant:

Just in the process of getting ours installed today. Again an ADVA FSP150-GE102Pro unit as per the OP. Openreach fibre's not quite installed, so just pulled the SFP's in the NTE out to have a quick squiz.

Network SFP is an Adva 1000BaseBX10 BiDi optics, 1310nm receive and 1490nm transmit with simplex SC presentation.

Access SFP is an Adva 1000BaseLX 1310nm single-mode with duplex LC presentation.

Did you take note of the actual Adva part numbers of the optics that you could share, please?

They will be ten digit numbers, something like -- 0061003015

Edited by burakkucat (Thu 04-Feb-21 15:27:14)