Back Door to our remote site

Back in the day we used to be able to dial in and connect to stuff, check for power on and the likes if a site was all messed up.

We have a remote site that is modern, cisco voip phones and the likes.

Today, how do you put in a  emergency only infrastructure that works when the other stuff is down ?  Can we cut a line out of our broadband and use it as a dedicated separate firewall / router infrastructure ?  

I am going to ping our isp and see what they say but I am looking around.
Who is Participating?
JohnBusiness Consultant (Owner)Commented:
At all my clients, I have ISP Modem -> VPN Firewall -> Network and stuff. So as long as Internet is up and also the very strong likelihood that the VPN modem is up (2 pieces in total), you can check everything else. Newer servers have an low level IP address and ability to start up or otherwise moderately service when the server itself is not running.
Usually, you go for a second ISP, on a different system (if budget allows). The reason for being different is to have a different point of failure. If you use a second separate line, but from the same ISP, and the ISP has a problem, it's not hard to imagine both lines going down at the same time.
TIMFOX123Author Commented:
JohnBusiness Consultant (Owner)Commented:
@TIMFOX123  - You are very welcome and I was happy to help
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