Error 721 tends to be a problem at the ISP . Messing about with hardware your end wont fix it . The line would appear to be ok as it has sync'd up fine .
UPDATE!
I spoke to Neville in Bristol again ...
I have now been without a service since the national outage on 15th October - that is 11-AND-A-HALF WEEKS. I have called back more times than I remember and am stunned at the utter lack of knowledge, ...
Can anyone assist me in the so far futile attempt to get my Orange broadband functioning - It has supposedly been 'active' since the 8th of december but despite having spent 7 hours in the last Three ...