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- Path: passport.ca!news
- From: vasant@passport.ca (Bill Antic)
- Newsgroups: comp.dcom.modems
- Subject: Re: Phone Line Quality Check
- Date: Thu, 01 Feb 1996 18:31:54 GMT
- Organization: Passport
- Message-ID: <4eqmki$kdc@forged.passport.ca>
- References: <310BE2EF.49B9@harris.com>
- NNTP-Posting-Host: dial050.passport.ca
- X-Newsreader: Forte Free Agent 1.0.82
-
- John Fakiris <jfakiris@harris.com> wrote:
-
- >Is there a piece of software (of hardware) to check the phone line
- >quality real time? I would like to improve my connection for 28.8K modem.
- >How does one know if the phone line signal to noise ratio is OK (at least
- >on my side)? My USR 28.8K shows the SNR levels with ATI11, but it is not
- >practical to use it if you are checking the lines trying to determine
- >whether you have a good connection or of you have improved the line?
-
- >John Fakiris
- >jfakiris@harris.com
-
- To test your phone line for noise, you may try the following:
-
- 1. Connect to another modem ( a BBS at ANY speed is OK for testing).
- 2. Type: +++ (You will receive an OK - meaning you are in COMMAND
- mode).
- 3. Type: AT%Q <enter> (You will see a number).
- 4. Type: A/ (Do A/ repeatedly and quickly, about 25 - 30
- times)
- 5. Watch the number that keeps appearing after each A/
- The number should be anywhere from 001 to 015. If it says over
- 30, you have serious line noise. If it gets near 50, you are
- going to lose the CARRIER DETECT. If it drops to 000, you have
-
- lost the CARRIER DETECT.
- 6. Type ATO to return to the online state and continue with the BBS.
-
- Try this test with a BBS that you usually have no problem connecting
- with. The AT%Q will probably show readings about 002 to 015. Next
- call a BBS or two with which you usually have problems obtaining high
- speed connections. If it is a phone line noise, you probably will see
- much higher readings with the test. This might prove that your
- problem is with the phone line noise and not your modem.
-
- Good luck!
-
- Bill
-
-
-