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- From: chris@suite.sw.oz.au (Chris Maltby)
- Subject: Re: Can caller-ID be implemented on non-ISDN lines ?
- Organization: Softway Pty Ltd
- Distribution: aus
- Date: 20 Nov 92 00:46:10 GMT
- Message-ID: <chris.722220370@suite.sw.oz.au>
- References: <11097@uqcspe.cs.uq.oz.au> <MALCOLM.92Nov19183648@nutmeg.cs.ntu.edu.au> <11115@uqcspe.cs.uq.oz.au>
- Sender: news@softway.sw.oz.au (Usenet)
- Lines: 25
-
- In <11115@uqcspe.cs.uq.oz.au> anthony@cs.uq.oz.au (Anthony Lee) writes:
-
- >>It is is in many places including parts of the US (which has minimal ISDN).
- ^^^^^^^^^^^^^^^^^^
- >What do you mean minimal ISDN ? How can you have such a thing ?
- >You mean there are digital local loop in the U.S. that don't
- >conform to the 2B+D standard ???
-
- He means that ISDN is not widely available in the USA, and that long-distance
- ISDN is even more problematic, leaving aside billing issues.
-
- >>From what have read in various newsgroups, between the first and second ring
- >>the exchange sends the phone number using 1200bps. Some modems can look for
- >>this.
-
- >But that's mean having a modem in the phone.
- >Wouldn't that be very expensive ?
-
- I think the signalling is more likely to be DTMF. You probably already
- have a DTMF processing chip in your phone/modem...
- --
- Chris Maltby - Softway Pty Ltd Internet: chris@softway.sw.oz.au
-
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