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1992-10-24
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JaxHost v7.0 (10/24/92)
(c) Copyright 1986 - 1992 by J.C. Kilday Associates
Developed at the Northern Lights BBS
207-761-4782 v.32bis/VHST
Table of Contents
-----------------
Introduction .................... 1
Description ..................... 1
Advanced Answering Modes ........ 2
Installation .................... 3
Additional Setup Notes .......... 4
Operating JaxHost ............... 6
Enhancing Your Installation ..... 7
Using New Features in v6.0 & 7.0. 9
Distribution and Restrictions ... 10
After You Register JaxHost ...... 10
Support ......................... 10
JaxHost v7.0 Page 1
Introduction
------------
JaxHost is a specialized host communications program primarily
intended to support operations at the DOS level on the host. It may
be interfaced with other communications packages to implement more
complex functions. It has been successfully used with Ken Brown's
REMDoor (REMote Maintenance BBS Door Program which includes a
full-screen editor) and with Marshall Dudley's Doorway (which allows
nearly any non-graphics program to be run from remote). File transfer
operations may be supported through REMDoor or other programs as
mentioned in the next section. Popular applications of JaxHost
include home-to-office (and vice versa) communications as well as
operations between a company home office and its remote sites.
Software configuration and file maintenance on the JaxHost-equipped
host are frequent uses. JaxHost is designed for operation on an IBM
PC, XT, AT, PS/2 or compatible connected to a Hayes 1200 or
Hayes-compatible modem such as US Robotics modems, and many of today's
v.32 and v.32bis modems.
The complete JaxHost v7.0 package includes the following files:
JAXHOST.DOC - this file
JAXHOST.COM - executable module
JAXHOST.OVR - JaxHost "overlay" file
CONFIG.HLP - context-sensitive help file
HOST.BAT - optional controlling batch file
DO_CTTY.BAT - optional batch file executed by JaxHost
JHORDER.FRM - order form for registering JaxHost
WHATS.NEW - summary of new features in v7.0
READ.ME - quick review information
Description
-----------
JaxHost normally monitors the modem and upon detecting a ring answers
the call while adjusting to the caller's baud rate. Speeds of 38,400
bps down to 300 bps are supported with the following comm parameters:
8 data bits, no parity, 1 stop bit. Upon successful connect, JaxHost
greets the caller with a one-line message of your choosing and requests
entry of a password, also of your choosing. If the correct password is
supplied and the callback mode is not in effect, JaxHost will transfer
control of the next part of the communications session to other
software. Depending on the configuration option chosen, the caller may
be dropped to the DOS level (with the DOS CTTY command having been
invoked to support continued communications). Or a caller may next see
another communications application, such as a BBS-like package, or a
menu of programs that might be run (possible if a package such as
Marshall Dudley's Doorway is used). If the correct password is not
given to JaxHost in three attempts, JaxHost hangs up and recycles.
For enhanced security against unauthorized access the callback feature
is available. If the callback mode is in effect when the correct
password is given, rather than give the caller immediate access, the
program disconnects the caller and dials the telephone number
specified in the configuration data. Access is granted only if there
is a successful connect at that number. JaxHost makes up to 3
attempts to establish a connect (it calls a 2nd and 3rd time at
intervals of 1 minute if no answer, a busy signal, or no modem
connect). If no connection is made on the 3rd attempt, the program
JaxHost v7.0 Page 2
recycles and sets up to await another call.
If access is granted to the DOS level on the host machine (through
CTTY or the equivalent), most DOS commands may be executed and so may
other programs designed for "line-at-a-time" operation, usually
capable of having console (keyboard and display) data redirected.
File transfers to and from the host machine also are possible. A
program called XFER supports Xmodem, Xmodem/CRC, and Ymodem (actually
1K-Xmodem) file transfers invoked from the DOS level on the host
machine. XFER was written by the author of JaxHost (current version
is 1.50, available as XFER150.ZIP on many BBSs and large online
services). If not available on the BBS from which you obtained this
program, first-time callers may download it from the author's BBS
listed at the end of this documentation. You might also like to try
Chuck Forsberg's DSZ for Zmodem file transfers, rather than the older
protocols provided by XFER (although XFER is simpler to use).
A log of call activity (a file called JH.LOG) is created by JaxHost so
that any attempts of unauthorized access to your system may be noted.
Calls accepted (and normal logoffs), rejected calls (password
failures), and other connects not resulting in access to the system
(hang ups at the password prompt and 3-minute timeouts awaiting
password entry) are all recorded in this text file. The file includes
the date and time of each call and how each ended. It can be viewed
using the the DOS TYPE command. It may be deleted at any time (using
DOS ERASE or DEL) and the program will start a new one whenever the
next entry is to be made.
When JaxHost is awaiting a call, a display including the date and
time, some key setup information, and present JaxHost status is shown.
A screen blanker turns off the screen if there is no keyboard activity
within a 2-minute span. Striking any key restores the display. The
display also is toggled on and off by hitting F9. F10 presents
information about the program. F3 allows access to the configuration
screen where various JaxHost setup options may be specified. F1 or F2
cause JaxHost to terminate. F1 leaves the telephone line in a BUSY
state (modem offhook) while F2 leaves the modem onhook.
Advanced Answering Modes
------------------------
JaxHost normally is set up to answer a call on the first ring. But
where there is need for the host computer to share a phone line and
not intrude on voice calls, special answering modes may be configured.
"Long Ring" may be configured such that JaxHost answers only after the
specified number of rings have been received. Alternatively, "Ring
Back" may be chosen. This mode requires a caller to dial twice before
JaxHost answers. The first call consists of a specified number of
rings (or JaxHost can be configured for a non-specific number of rings
on the first call). JaxHost an