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- Newsgroups: sci.electronics
- Path: sparky!uunet!gatech!darwin.sura.net!spool.mu.edu!caen!batcomputer!cornell!uw-beaver!fluke!gtisqr!toddi
- From: toddi@mav.com (Todd Inch)
- Subject: Re: caller id block
- Message-ID: <1993Jan25.203845.8439@mav.com>
- Organization: Maverick International Inc.
- References: <1993Jan16.132013.2357@doug.cae.wisc.edu> <1993Jan17.013408.5389@phx.mcd.mot.com> <betel.727244356@camelot>
- Date: Mon, 25 Jan 93 20:38:45 GMT
- Lines: 17
-
- In article <betel.727244356@camelot> betel@camelot.bradley.edu (Robert Crawford) writes:
-
- > A more interesting (to me) question: How could someone _with_
- >caller ID screen calls that do not include the information? My idea is
- >for the "black box" to sit between an answering machine and the
- >telephone, and to not pass the ring signal unless the caller ID
- >information comes along...
-
- Great - if you don't want to receive any long-distance calls. Calls
- from other exchanges, especially in distant places, may not contain the
- CID info because the necessary SS-7 protocal has not be implemented
- everywhere yet.
-
- Now if you can distinguish between "blocked" and "not available", that
- would work fine. This is probably dependant upon your hardware, but
- may also be dependant upon how your local telco has things set up -
- they may send one message for both conditions (although hopefully not!)
-