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Upgrading BT LES2 Fibre Point to Point Network

Medium Priority
Last Modified: 2013-11-09
I have 2 sites connected by a Fibre Cable terminating to a BT LES2 trasciever connecting via AUI to a IMC Lanrepeater 4. I would like to upgrade the connection but don't know how.

Firstly we tried to buy connectors, thinking the fibre terminated in SMA. So Bought SMA-LC connnectors so that we could plug direct into our HP switches. Unfortunately the cable is not terminated in SMA. We now think it's terminated as FC.

So could anyone recommend a solution other than replacing the entire line.

Attatched are pictures of Set up
Watch Question

I would suggest that BT Les2 box works at 10Mbps, but what kind of port do you have in your switch?


The BT LES is 10MBPS. The Switch has a HP 1000Base-SX.

so, you have answered your own question - it will not work this way.
you need 10/100 media converter.
So I would do it this way:
I would  find 10/100 copper port in my switch and bought 10/100 Media converter (with 10/100 not only for copper, but also for fiber)


I know very little about this, so forgive my ignorance. Can we not join the FC cable to a FC-LC patch cable and then patch direct into the switch?

I suppose, answer is negative.
Because SFPs or GBICs are mostly 1000Mbps Full duplex, but the other end of BT most likely is 10 Mbps full duplex.
So the only option you have - you can remove two boxes (those you have mentioned) and put one instead (with different fiber patch cable (most likely SC-SC) because there is hard to find media converter with FC jack)


We have HP switch with 1000 mbps card at each end. If we find correct adapters should that work?

if you want this to work, should should have dark fiber between locations, then you can freely upgrade your line.
But most likely you have VPN network at 10Mbps SLA and the other end of this particular BT les2 adapter is a port of BT's PoP (Point of Presence) switch.
However, I may be wrong.
You can call BT and ask them.
We have found the solution.
The fibre we have is Single Mode between the two sites. This has type FC connectors at the ends.

So if we buy two 1000Base-LX SFP Mini GBIC with LC Connection to connect into a HP switches at either end. We then buy patch cables that have LC connectors into the switch and FC to connect to the original cable, all we need is some FC-FC connectors and we should have upgraded the line from 10mb to 1000mb.

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Just a Note to say this worked a treat, and we are currently getting well over a 100mb connection speed.
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