Hi we've just set up our VigorIPPBX (Firmware 3.5.6_RC3) and we keep on having intermittent call drops. We've got an 211011_A Hardware: Annex A line and the router seems to be dropping the DSL line. Can anybody offer any advise?

Update to 3.5.6's final version first of all, I recommend giving the UK standard modem code (232201) a go to see if that gets the ADSL stable, if not then try the 211801 modem code which you can get from ftp.draytek.com

Hi Voodle, we've upgraded to the latest firmware and thought that fixed the problem, but no it keeps dropping the DSL, can you offer any other advise?

The modem codes are separete from the firmware, you need to get different modem codes from www.draytek.com or the FTP site - I suggest trying 211801 as a modem code instead of the UK standard (232201) modem code firmware