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1991-11-12
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July 1991 Undocumented Features in LAN+MODEM Page 1
Copyright (c) Cross Communications Company 1989-1991
PREFACE
-------
Note: Includes versions through 3.20.
This document describes new features in LAN+MODEM which are not
present in the current printing of the LAN+MODEM User Guide. This
information should be considered an extension to the Guide.
To print this document, issue the DOS command:
COPY README.DOC PRN
- or -
PRINT README.DOC
UCOM Combined Dial String Feature
---------------------------------
With this version of UCOM.EXE a phone number longer than provided in
one space can be used. This is accomplished by combining two
consecutive entries together.
For an entry requiring a longer phone number, place a portion of the
number in the usual slot. The speed, parity, etc. will still be used
from this slot. At the end of the first number portion, place a back
slash. This is used to tell UCOM to add the contents of the NEXT
consecutive entry's phone number to the number on the desired entry
line. Note that most modems limit the number of dial command
characters to 40 so not all of the two entries should be filled
(spaces are usually ignored by the modem and don't count in the total
length).
An example for this feature is for dialing a number collect and then
waiting for the billing tone. Then the user's phone card number is
entered to complete the call. This can take up to 26 or more
characters. Here is a suggested format for this use, using page one
entries 5 and 6:
Entry Name Number BPS-P-W-S
...
5 Compuservice 0-503-620-0000\ 9600 E 7 1
6 (access code) W 303-555-1212-1234 9600 E 7 1
...
The 'W' in the second entry instructs the modem to wait for a second
dialtone.
In the redial selections field, enter only the number of the primary
entry, in this example '5'.
July 1991 Undocumented Features in LAN+MODEM Page 2
Copyright (c) Cross Communications Company 1989-1991
MCOM Operation on non-standard IRQs
-----------------------------------
The modem driver program MCOM.EXE has been enhanced to work with
alternate IRQs on the standard COM port addresses. For example, COM3
can be used with IRQ5, and up to four modems can now operate on each
PC. The alternate IRQs which may be used are 2 through 7.
To use this feature, issue MCOM with the options for COM port number
and IRQ number as in the following examples:
MCOM 3 IRQ5 (optionally COMMnn) (enter)
MCOM 4 IRQ7 (optionally COMMnn) (enter)
Refer to your modem or serial card manuals for allowable combinations
of ports and IRQs. The default assignments for MCOM are not changed
from previous versions and are as follows:
Port address (hex) IRQ
COM1 3F8 4
COM2 2F8 3
COM3 3E8 4
COM4 2E8 3
NETDEV Operation with PROCOMM PLUS(tm) Network Version V1.0
-----------------------------------------------------------
It has been found through extensive testing that PROCOMM PLUS(tm)
Network Version V1.0 does not completely adhere to the Interrupt 14h
specifications, specifically in the area of data output. The INT14
interface, NETDEV.COM, has been enhanced to correct this problem by
detecting a buffer full condition and waiting until space is
available. PROCOMM will not examine the buffer full condition and
continue to send data, resulting in lost data at high speeds and
with long block file transfers such as YModem.
To enable the special handling in NETDEV, the command line option
PCPLUS has been added which is used when NETDEV is first loaded into
memory. Invoke NETDEV as follows:
NETDEV PCPLUS (enter)
All other NETDEV command line options are the same as in previous
versions.
- End of README.DOC -