?
Solved

Modem Speed Question

Posted on 1997-06-03
1
Medium Priority
?
232 Views
Last Modified: 2010-04-12
Hi,
  This is going to sounnd strange, but I want to know ow fast my modem is.  The manual calls it  a V.34 Modemt. It also says that it is  based on the Rockwell chip set.  The manual also says that it supports speeds of up to 115.2Kbps, but how is that possible?
  So my question is - how fast is it?
0
Comment
Question by:Begemot
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 1

Accepted Solution

by:
val_m earned 150 total points
ID: 1009279
Your modem is 28.8Kbps. (That's kilobits not kilobytes).  When manual says that your modem supports speed up to 115.2 Kb they mean with compression and is the maximum speed your com port will support.  Rarely if ever you will achieve 115.2 Kb speed.  Here is the reference for some modulation standards:

V.21                 300bps
V.22                 1200bps
V.22bis             2400bps
v.23                  1200bps/75bps     (1200 upstream, 75 downstream)
v.29                  9600bps
v.32                  9600bps
v.32bis              14.4Kbps
v.32fast             28.8Kbps         (V.FC / superseded by v.34)
v.34                   28.8Kbps        (Current standard)
v.34+                 33.6Kbps        

There is no standard for 56Kbps speed as of yet.

v.42 & v.42bis are error correction and compression protocols and are not related to the speed of modem        (although they are related since the compression can push more data through the phone line, but is invisible when downloading most files which are already compressed)

vmushinskiy@earthlink.net
V.34+ is 33.6
0

Featured Post

Enroll in August's Course of the Month

August's CompTIA IT Fundamentals course includes 19 hours of basic computer principle modules and prepares you for the certification exam. It's free for Premium Members, Team Accounts, and Qualified Experts!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Monitor input from a computer is usually nothing special.  In this instance it prevented anyone from using the computer.  This was a preconfiguration that didn't work.
Arrow Electronics was searching for a KVM  (Keyboard/Video/Mouse) switch that could display on one single monitor the current status of all units being tested on the rack.
This is my first video review of Microsoft Bookings, I will be doing a part two with a bit more information, but wanted to get this out to you folks.
In this video, Percona Solutions Engineer Barrett Chambers discusses some of the basic syntax differences between MySQL and MongoDB. To learn more check out our webinar on MongoDB administration for MySQL DBA: https://www.percona.com/resources/we…

770 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question