Re: 56K Modems

Rudy Komsic ( (no email) )
Fri, 13 Feb 1998 15:04:36 -0500

We have a PRI Connection and would like to know how would I be able to
increase the power output on the chassis. Is this done on the PRI Card? What
option is that configured under... Thanks for Prompt reply.

Rudy Komsic
Network Administrator - Cyberglobe Communications Inc.
4996 Place de la Savane, Suite 200, Montreal, Quebec, H4P 1Z6
Tel: (514)342-3883 Fax: (514)342-5139 E-Mail:

-----Original Message-----
From: Michael Whisenant <>
To: <>
Date: February 13, 1998 1:12 PM
Subject: Re: 56K Modems

>True, and if you are getting a PRI, have a clean low noise line, between
>3db and 5db of loss, then you can achieve upto 54666 connections and
>transfer compressed files at 6.3K. The normal 53,333 limit is set as a
>default setting to eliminate crosstalk in the wiring pairs. I am less than
>1200 feet to the CO and I have increased the power output 2db without
>creating crosstalk.
>At 11:36 PM 2/10/98 -0500, you wrote:
>>I will keep it short. You are not seeing a 56k connection...plain and
>>simple. 4k is achievable with a 33.6 connection with good compression,
>>which you are probably seeing.
>>Not saying I don't believe just not anywhere in black and white,
>>nor from any of our lab results. But hey if you are happy and it works for
>>you....tear it up. This just would never work in an ISP nor telecommuting
>>environment. I would hate to see the person who originally asked the
>>question go out and buy a 16 port digi and 16 usr x2's and try and setup
>>shop....he would probably come looking for you... ;)
>> There are three primary requirements for x2 speeds to be achieved. They
>> 1.Digital at one end. This end is where the x2 server lies. The
>>digital line
>> servicing the x2 server must be an ISDN PRI, ISDN BRI or a
>>"trunk-side" T1.
>> This item is taken care of by the ISP/Online Service. Simply
>>asking your
>> ISP/Online Service if they support x2 will be good enough to
>>verify this
>> requirement.
>> 2.x2 support at both ends. In order to achieve x2 speeds, both ends
>>of the
>> connection must support x2. In other words, you must have an x2
>> modem(called an x2 client) on your end and your ISP/Online Service
>> have an x2 device on their end(called an x2 server). To check for
>>x2 support
>> on the server side, talk to your ISP/Online service about x2
>> 3.One analog section. This is the section most relevant to you. In
>>almost all
>> residential homes, the phone line going into your modem or phone is
>> analog. This does not mean that it is all analog to the CO(Central
>> which is a very important aspect.
>>At 02:00 PM 2/10/98 -0800, John Barret wrote:
>>>No, you are wrong. :) No offense, but you can setup a standard POTS line
>>>between two 56K modems and get 56K (almost). The hitch comes in when you
>>>shuv it through a telco, where it then becomes converted several times back
>>>and forth if the incoming is analog instead of digital.
>>Rik Thomas
>>Rik on the OS Wars: "I run them all, in no way do I like any OS, some more
>>than others piss me off!, just like people"-Rik Thomas
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