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- From: ketil@edb.tih.no (Ketil Albertsen,TIH)
- Subject: Re: Subaddressing (was: ISDN/analog interfacing)
- Message-ID: <1993Jan26.154701.8499W@lumina.edb.tih.no>
- Sender: ketil@edb.tih.no (Ketil Albertsen,TIH)
- Organization: T I H / T I S I P
- References: <1993Jan26.62314.11147@kei.is.s.u-tokyo.ac.jp> <C1GM74.Czq@sranhd.sra.co.jp>
- Posting-Front-End: Winix Conference v 92.05.15 1.20 (running under MS-Windows)
- Date: Tue, 26 Jan 1993 15:46:56 GMT
- Lines: 20
-
- 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. Of course that is OK, but the
- conclusion you draw by letting some automatic answering machine say that
- "there is no equipment you can talk with" is a little too general, isn't it?
-
- Each TE can decide not to answer, even if it is there and capable of
- answering, e.g. based on data supplied (or not supplied) in the user data
- field, based on the caller ID, the requested high-level info type or
- any other information in the setup message. So a lack of response does
- not necessarily mean that the equipment isn't there
-