Wow, many interesting replies, thanks for the input everyone. Many google searches went on this morning, many new terms and stuff
I am still learning how this works, all these 2nd line options are new to me.
My idea is to use my current connection as a primary or main service. I will connect this to the phone line via a Billion 8800NL, as I find it gives better results so far from my TP link 8817 (I am on a short line), maybe chipset matching as discussed on Kitz main site.
This weekend proved to give very good results, however TBB reports show higher than expected packet loss at times.
I was concerned by this, but I wonder if maybe the TP link is not set up correctly. I will leave the Billion plugged in tonight to see if anything changes.
I was thinking of getting another line from any other recommeneded ISP and use their router/modem as this will just be a bridge to the main connection, both of these will then connect to the main router ie the Asus or Draytek if I get one.
Kitz is right, after exploring the solutions in terms of cost, line bonding is very costly if all I want is reliability and not throughput.
Not sure if anyone would know, but would a fail over solution be better, via a 4g dongle or something ?
I considered this, however Sky has offered me a 2nd line for a very small set up fee then just my normal line rental and adsl subscription. This seems to be similarly priced to a 4g plan with the advantage of being unlimited and well, wired > wireless for me I think.
I have tried to read more about pfsence, but I think I might be a bit silly this morning, I dont really understand what it does or its intended purpose. Sorry for being slow
My TBB if anyone wants to see: