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- From: scott@labtam.labtam.oz.au (Scott Colwell)
- Subject: Re: Subaddressing (was: ISDN/analog interfacing)
- Organization: Labtam Australia Pty. Ltd., Melbourne, Australia
- Date: Wed, 27 Jan 1993 02:14:11 GMT
- Message-ID: <scott.728100851@labtam>
- References: <1993Jan26.62314.11147@kei.is.s.u-tokyo.ac.jp> <C1GM74.Czq@sranhd.sra.co.jp> <1993Jan26.154701.8499W@lumina.edb.tih.no>
- Lines: 25
-
- ketil@edb.tih.no (Ketil Albertsen,TIH) writes:
-
- >In article <C1GM74.Czq@sranhd.sra.co.jp>, nisimura@sran233.sra.co.jp (Tohru
- >Nishimura) writes:
-
- >>For example, when you call an ISDN number with ordinal analog telephone
- >>(with/without ISDN), and there is no voice equipemnt at called side, no
- >>ringing occurs; Synthesising (woman) voice would answer; "There is no
- >>equipment you can talk with.....", even if "dataline" ISDN TA or ISDN/IP
- >>card is attached at called side. This is a Japanese implemetation. I
- >>don't know other countries' implementation.
-
- >It sounds as if you are running some timeout-counter in the NT1 to detect
- >that none of the connected units responds.
-
- The timeout happens at the exchange. It sends a setup message to any
- devices on the S i/f, they can either decide to ignore it or they can
- respond with an alerting message (meaning that they are 'ringing the phone').
-
- When the call is accepted locally ('picking up the phone'), a connect message
- is sent to the exchange.
- --
- Scott Colwell Labtam Australia Pty. Ltd.
- net: scott@labtam.labtam.oz.au 41 Malcolm Rd., Braeside
- phone: +61-3-587-1444 Melbourne, Australia 3195
-