Thanks for the link, unfortunately my memory of Telnet is rubbish and it refuses to work for me, the window flashes up then closes straight away. Praise the lord we do not need to use it anymore, I hated Dos and it's peculiar workings and Telnet is a throwback to those dim and distance "syntax exact" days!!
I contacted Zen support and as you indicated they can now see the local exchange has now being upgraded to 21CN, however there is now a wait until Zen migrate all their customers on the exchange to the 21CN equipment. Once that has happened we get an email informing us of the regrade option, then we need to apply to have the regrade applied to our account through the customer portal or with Tech support, it still leaves us on the same Broadband contract and price plan.
There was no indication of timescale for this process so it could be weeks or months, who knows, after looking at the 21CN RFS date looming for a few years now I think I can survive a while longer. God knows if fibre will ever cross the border and reach us!