Battery Backup for Broadband / Digital Voice - Not working (?)

[WSH]

What's an OLTE?  If you mean the equipment to convert electrical signals to optical, that would be in the "exchange".

If you mean ONT, I thought you said you were on FTTC?  Obviously, the ONT would also need battery backup.

[Bilgepump]

Apologies, we are on fibre all the way, so FTTP. I'm a bit out of date with terminology, I'm afraid. OLTE used to mean Optical Line Terminating Equipment. So a second backup battery is needed? 

[licquorice]

Disregard all posts up to this point, based on incorrect information.

It should be obvious you need a BBU to supply both router and ONT.

[gg30340]

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@Bilgepumpwrote:

Apologies, we are on fibre all the way, so FTTP. I'm a bit out of date with terminology, I'm afraid. OLTE used to mean Optical Line Terminating Equipment. So a second backup battery is needed? 

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Depending on the BBU that you have you have and where your equipment is sited in regards to each other you could just plug a double socket extension lead into the BBU and the ONT and BT Hub into that.

Obviously if you are using a BT BBU the above would not be relevant because there is no 3 pin socket to plug into.

[WSH]

Well, that's what's got me confused.  In message 8, the OP said "It all came straight back up as soon as the offending extension lead was replaced."  What extension lead?  Does he mean a splitter lead that came with the BBU?  In which case, the plug for the ONT end may be the wrong size.

[iniltous]

Asked specifically if they were FTTP or not , and giving the wrong answer suggests they probably have the wrong BBU , presumably they should have one of these assuming the ONT and router are close to each other
https://youtu.be/zYmlWR6NU-g?si=79dJAZACS7MV5Dad