True necessity of Records? [was: CryptoSeal]

[coderman]

On Tue, Oct 22, 2013 at 10:21 PM, grarpamp <grarpamp at gmail.com> wrote:
> ...
> There's no reason to hold CDR's more than the last fully paid billing
> cycle, and, yes, further limited by the type of calling plan you have.


as an interesting aside, when i worked at a company providing
directory assistance to cell phone providers, there were some
individuals who would call DA just to be outbound dialed to the
desired number.

our call setup incurred a hairpin route for this outbound leg,
connecting the dialed party side through our switches, to provide
in-band services.

this had the convenient effect of masking the origin of a caller
through our network.  needless to say, we were strongly encouraged to
keep all CDR records for years, precisely because some many months
later a request would come in asking for the calling party information
associated with one of these outbound legs.

this is not even considering the "data analytics" reasons why carriers
keep these detail records indefinitely...