Upstream Power Redundancy Question

[retromodcoza]

We have Vumtel fiber in our neighborhood and are connected to it through WebAfrica. Its a home service.

I have a small server cabinet that is rigged with a UPS. UPS runs about 3 hrs with current equipment. I have pulled the fiber line into the cabinet and the POE/Fiber converter runs off the UPS.

So , I wanted to see if any of the forum members knew about the power redundancy features that Vumatel has upstream. I'm guessing this fiber node of ours is connected to a local "exchange" , for want of a better word. Then it would be connected perhaps to a regional exchange , and then to a POP (which I know has power redundancy , as it mentions so on their website).

The thing is , how far down the chain does the backup power extend? All the way from my home to the POP? Do the local "exchanges" or routers have backup power? Do you have any details as to how long they are designed to stay up for in case of outages?

It would obviously be pointless to keep the servers running on a UPS if the fiber link went down due to an upstream power outage.
Any design numbers for outage periods would be useful if available.

Many thanks

 

[Sinbad]

From my experience (vumatel trenched) my internet is completely undisrupted during power outages, therefore there is backup power all the way to whereever it needs to be.

 

[Geoff.D]

IT depends on the technology used between you and the FTTH central Node. You can safely assume that once there, power redundancy should be in place, sufficient to handle reasonable Load shedding events. In the good old days, you could bet on at least 14 hours of backup power at the local exchange before generators would kick in. Now, it could be much less. There are rumours around that smaller concentration pops now only have as little a 4 hours battery backup.

If there are active points between you and the FTTH main node, then the backup could be as little as 30 minutes. Only your fibre supplier is in a position to tell, and if it is Vumatel, they are not saying. See the pathetic article based on an interview with Vumatel placed today on my BB.