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- Path: sparky!uunet!haven.umd.edu!decuac!pa.dec.com!engage.pko.dec.com!nntpd.lkg.dec.com!hunnas!bath
- From: bath@hunnas (David Bath)
- Subject: Re: Here's an idea for a different ring-detect
- Message-ID: <1993Jan6.015600.10745@nntpd.lkg.dec.com>
- Sender: usenet@nntpd.lkg.dec.com (USENET News System)
- Organization: Digital Equipment Corp.
- X-Newsreader: Tin 1.1 PL4
- References: <C0D48B.3Ly@mentor.cc.purdue.edu>
- Date: Wed, 6 Jan 1993 01:56:00 GMT
- Lines: 27
-
-
- I wrote a small program to achieve this. However it's very specific to
- my local conditions, and not generally fit for public consumption.
-
- All I did was monitor the Carrier Detect signal every 10ms. If it glitches,
- I let out a tone through one of the audio channels.
-
- I can then decide how important what I'm doing is, and hang up the modem
- to take the incoming call. This only works well if:
-
- you've got an error correcting modem
- your modem drops CD when it hears the tone
- you can tell your modem not to give up unless CD has dropped for an
- extended period (I think I set mine to about 10 secs).
-
- It still suffers from false alarms sometimes (i.e. sometimes line noise will
- also make the modem drop CD) but for the most part, whenever I hear the tone,
- I just hit the "hang up" button on the modem and voila .... the phone rings
- with the new incoming call.
- --
-
- +-------------------------------+---------------------------------------------+
- | David Bath | bath@ozrock.enet.dec.com |
- | Networks and Communications | The views expressed are my own, etc... |
- | Digital Equipment Corporation | "Pink rubber gloves with black frilly bits" |
- | Gold Coast, Australia | |
- +-------------------------------+---------------------------------------------+
-