In article ,
charles writes:
In article ,
polygonum wrote:
My mother's phone has developed a habit of deteriorating in quality in
the evenings. It seems to get markedly quieter and has an odd "talking
from inside a cardboard box" quality. This seems to happen quite often
but getting a proper analysis of exactly which days and for how long
just ain't going to happen.

Her phone is supplied by the Post Office

worrying - The Post Office haven't supplied phones since 1980!

They have - they provide a separate phone service.
I don't know if they use carrier preselect over BT, or LLU.
If you asked this question on uk.telecom, you would get
people who will know this off the tops of their heads,
and likely know if things like 17070 and/or the BT web
pages can be used to generate a line test on a Post Office
service.

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]