New Zealand ADSL Mailing List


Fw: Using a standard modem on an ADSL enabled line...

From: Thing <linux_at_xtra.co.nz>
Date: Fri, 30 Apr 1999 17:12:10 +1200
Message-ID: <002601be92c8$00114980$0a01a8c0@kaitlin.kaitlin.co.nz>

Um since when is a courier v everything cheap?

Steven

-----Original Message-----
From: Mark Barlow <Mark.Barlow@telecom.co.nz>
To: adsl@freebsddiary.cx <adsl@freebsddiary.cx>
Date: 28 April 1999 16:25
Subject: Using a standard modem on an ADSL enabled line...

>Make sure that you are using the standard POTS jacks and not the ADSL jack
as this carries all of the high frequency ADSL signal that will prevent your
modem from working correctly.
>If you are using a POTS jack when you are experiencing this problem then it
is probably because the Low Pass Filter (that allows only the voice
frequencies to pass to and from these jacks) is trimming the upper
frequencies (used by 56K modems in particular). Most modems will operate OK
on the POTS jacks but will be restricted to approximately 40Kbps. However
some 'cheaper' modems connect at a higher speed and then don't gracefully
degrade as they detect high error rates and fall over.
>If this doesn't help then tell us...
>- the type of modem
>- which jack you are using it on
>- exactly what is occuring including the speed the modem connects at and
what speed it is running at when it drops the connection.
>- why you want to use a dial up modem when you have an ADSL connection?
>
>I use my dial up modem to send and receive faxes over our ADSL line and can
successfully connect and hold a connection at 46Kbps! - it's a US Robotics
56K.
>
>
>Mark Barlow :-)
>ADSL Manager
>e: Mark.Barlow@telecom.co.nz
>p: 488 9628
>x: 90628
>m: 025 279 0048
>
>>>> "Thing" <linux@xtra.co.nz> 24/April/1999 03:18pm >>>
>Is anybody having problems with analouge modems disconnecting while run on
>the same line as their adsl? seems to be quite severe with me, yet the same
>set up on a plain line works fine....
>
>
>Thing
>
>
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>
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Received on Fri Apr 30 17:12:10 1999


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