text stringlengths 0 1.99k |
|---|
This will run a file with the extension ".COM" |
SEG <FILENAME> |
This will run a file with the extension ".SEG" |
STATUS USERS |
This will give you a listing of users and other information currently on the |
system. |
STATUS |
This will give you the status of the system and other information. |
EDIT (Or ED) |
This is a text editor. |
CHANGE_PASSWORD <OLD PASSWORD> |
Does just what it says it does. |
DELETE <FILENAME> |
Deletes a file. |
LOGOFF |
I think this is pretty obvious. |
LOGIN |
This will log you out and take you back to the login process, providing there |
is no logins-over-logins set by the administrators. |
This is a very small list, but will probably help the beginner greatly when |
he/she first logs on. Hope you enjoyed this issue...Look for Hacking Primos |
Part IV in Phrack, 12. Mebbe'. |
-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#- |
! ! |
# A Phrack,Inc # |
! ! |
# Presentation # |
! ! |
-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#-#- |
========================================================================= |
==Phrack Inc.== |
Volume Two, Issue Eleven, Phile #8 of 12 |
Telephone Signalling Methods |
---------------------------- |
Written by Doom Prophet |
This file explains the basic signalling methods in use by the telephone |
system and is intended for general understanding. The text that follows is not |
highly technical since this file is for basic understanding and aimed at less |
experienced phreaks. Still, the more experienced readers may want to read it |
as a review on the information. |
Analog--Analog signals are those that have continuously and smoothly |
varying amplitude or frequency. Speech signals are of this type when you |
consider tone, pitch and volume levels that vary according to the person |
speaking. When a person speaks into the transmitter on a telephone, the voice |
signals are made up of acoustical energy, which are then converted into |
electrical energy for transmission along a transmission medium. |
Analog carrier facilities may operate over different media, such as wire |
lines, multi-wire cable, coaxial cable, or fiber optic cable. Copper wire is |
the most commonly used for subscriber loops. |
A technique that allows for many signals to be sent along the same |
transmission path is called Multiplexing. Analog signals use Frequency |
Division Multiplexing or FDM. |
Digital--Instead of the voice signal being processed as an analog signal, |
it is converted into a digital signal and handled with digital circuits |
throughout the transmission process. When it arrives at the CO that serves the |
called telephone, it is converted back to analog to reproduce the original |
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