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- Path: sparky!uunet!pipex!unipalm!uknet!fulcrum!davidw
- From: davidw@fulcrum.co.uk (David Wilkinson)
- Newsgroups: uk.telecom
- Subject: Re: Itemised Bills
- Message-ID: <C1GDGD.Dxo@fulcrum.co.uk>
- Date: 26 Jan 93 08:41:00 GMT
- References: <1993Jan25.144543.5802@alex.com> <1993Jan25.165736.21231@aston.ac.uk>
- Sender: news@fulcrum.co.uk
- Organization: Fulcrum Communications
- Lines: 40
-
- In article <1993Jan25.165736.21231@aston.ac.uk> evansmp@uhura.aston.ac.uk (Mark Evans) writes:
- >Doug Clinton (dec@alex.com) wrote:
- >: In article <931325141322@ibm3090.bham.ac.uk>, TREHARAJ@ibm3090.bham.ac.uk writes:
- >: |> ==============================================================================
- >: |> Could anybody explain what modifications BT would need to carry out in
- >: |> order to supply the residential customer with a fully itemised bill?
- >: |> Why is it that Mercury can do so?
- >:
- >: BT would almost certainly have to install a very large amount of extra
- >: mass storage in order to log every all to provide fully itemised
- >: bills. Mercury can manage it because they have far fewer customers
- >: (probably one or two orders of magnitude) which means they do not have
- >: to store as much data.
- >
- >How much data?
- >After all disk drives are not exactly expensive items.
- >Also calculating the unit value for calls (and fudging the meter figure)
- >must take up a fair amount of cpu time. (Is this done by the exchange processer,
- >probably, due to charge advice, which mercury does not have)
-
- I suspect that one problem is the size of the disk that comes with
- exchanges such as System X. All the billing data is dumped to that,
- and then downloaded to a remote site periodically (every hour, I
- think) over X.25. BT insist, however, that they musn't lose any
- billing data, even if their comms links go down for a long period (>
- 1day?) - this effectively limits the amount of data that can
- physically be stored, and hence the 10 unit restriction.
-
- Don't ask me how Mercury manage to do it, I don't know.
-
- I suspect one solution would be to persuade GPT to fit bigger disks to
- their exchanges, but there might be technical arguments against that.
-
- Dave W.
-
-
-
- --
- David Wilkinson davidw@fulcrum.co.uk
- Fulcrum Communications Ltd, Fordrough Lane, Birmingham, B9 5LD, ENGLAND
-