Pen recorders and phone records

[Eric Blossom <eb@mwmax.sr.hp.com>]

> I am confused about the necessity for this if the phone companies routinely
> record this information anyway.  Is this just an archaic and obsolete
> terminology, and what really happens is that the phone company will give
> already-existing phone records to authorized officials?

Hal,  I'm not sure, but a pen register would record all dialing codes
(touch tone), not just those used to make the first leg of the call.
Voicemail, multihop calls, etc come to mind.

Eric Blossom