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uk.telecom.broadband (UK broadband) (uk.telecom.broadband) Discussion of broadband services, technology and equipment as provided in the UK. Discussions of specific services based on ADSL, cable modems or other broadband technology are also on-topic. Advertising is not allowed.

Is this a possible ADSL fault?

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Old June 9th 06, 12:30 AM posted to uk.telecom.broadband
Tim Clark
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Posts: 179
Default Is this a possible ADSL fault?

In article ,
Peter writes:
An Update on this:

I found the problem. It was a bug in the Draytek 2900Gi router. It has
an ISDN dial-up backup option. This can be enabled or disabled in
about 4 different places in the config: there is a global ISDN port
enable/disable, there is a packet trigger type, there is a
64k/128k/none selection, etc. It turns out that merely disabling say
the ISDN port doesn't do it; it still dials out randomly. One has to
disable ISDN in all four places. Easier to just pull out the cable in

Pulling the cable out has another advantage. I have ISDN as a back-up in
case my cable modem connection fails (yes, I know I ought to get round
to having ADSL as the back-up instead of ISDN). If a tickle of
lightening nearby comes along the phone line and into the ISDN port of
my Draytek router, and blows it up, it's knocked out a single point of
failure in my network. In other words my back-up solution has actually
made me more susceptible to failure! Once I realised that, I left the
ISDN physically disconnected. (I can also, if pushed, redisign my
network if the Draytek goes belly-up)

Although I like Draytek routers, I haven't been too lucky with them. One
did suffer a lightening hit when I had only ISDN (Home Highway) as my
connection. I can hardly blame Draytek for it not surviving, a nearby
property served by the same telegraph pole as my house suffered a hit,
and beside the Draytek router, in my house it left BT's Home Highway box
dead, a few random ports on an ethernet switch, and one ethernet card on
a PC dead too. Then, a while after having converted to cable, using ISDN
as backup, the replacement Draytek router died for no apparent cause,
and I had to replace that too. Only the good reports in newsgroups etc.
kept me loyal to Draytek, otherwise I think I may have wavered at that

Tim Clark

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