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- From: dkw@wolferts.ka.sub.org (Klaus Wolferts)
- Newsgroups: comp.dcom.modems
- Subject: Re: Line in use indicator?
- Message-ID: <dkw02545920811182349@wolferts.ka.sub.org>
- Date: 12 Sep 92 10:17:08 GMT
- References: <8cZuqB3w165w@argus.CAM.ORG>
- Organization: Ing'Buro f. EDV + Elektronik, D-7500 Karlsruhe 31
- Lines: 31
-
- paul@argus.CAM.ORG (Paul Mainville) writes:
- >
- > Does someone know of an existing device that can show when a phone line is
- > in use (as on multiple line phones)?
- >
- > Does someone have the schematics to build one?
- >
- > Scenario: My PC (in room A) is transfering data through modem, and I want
- > my wife (in room B) to know the line is in use without taking
- > the receiver...
- +----------+ +-----+
- Use the following arrangement: | Modem/PC |Room | |Room
- |Line Phone| A |Phone| B
- +--+----+--+ +--+--+
- | | |
- Line in -------------------+ +--------------+
-
- The phone in room B is usable only when the modem is on hook.
- When the Modem is off hook, the phone in room B is dead and can't
- disturb your data transfers.
-
- Naturally if your wife is phoning in room B, you will break her call
- when you start a data transfer with your modem/PC (but you hear her
- partner in the modem speaker and may stop with ATH :-)
-
- Klaus
- ____ __ __ __ __ __
- | \ | |/ / | | /| | / / Dr.-Ing. Klaus Wolferts: dkw@wolferts.ka.sub.org
- | | | | | / | |/ | |/ / Ing'Buro f. EDV + Elektronik
- | d| | | k| \ | w| /| | / Mitteltorstr. 45, Phone: +49 721 706016
- |____/ |__|\_\ |__|/ |__|/ D-7500 Karlsruhe 31, Germany, 49x03'02"N 8x22'58"E
-