CHAPTER 4

COMMON SERIAL CARDS AND MODEMS


This chapter describes some of the common communications cards, serial cards,
and modems which are supported by MODEM MGR. The descriptions cover the current
model of each unit, The manufacturer may change designs, so refer to your
instruction manual if you have a different version.


INTERNAL PLUG-IN MODEMS

This section will describe some of the modems which are available as internal p
lug-in cards. You do not have to use many cables when you install one of these
internal modems so installation is relatively simple. Refer to your modem manual
for installation procedures.

Most internal plug-in modem cards have built-in firmware which provide some
communications capability without requiring you to load a program from disk.
These capabilities are not as elaborate as those provided by a full-featured
communications program, but you can use them to determine if the card is working
properly.  MODEM MGR does not use the firmware routines and any commands
associated with the modem firmware are not recognized. For example, firmware
commands such as PR# 2, CTRL-A, and CTRL-F will not work when MODEM MGR is
running.

Some manufacturers of internal modem cards provide a communications program on
disk. Any communications characteristics you set when you run the disk program
or the modem card firmware will not be retained when MODEM MGR is run. For
example, baud rate, line feed insertion, duplex mode, and upper/lower case are
initialized by MODEM MGR regardless of the settings previously used with the
manufacturer's disk or firmware program.

Unless otherwise stated, MODEM MGR will support dial, answer, hangup, unattende
d operation, and answer/originate selection with all of the plug-in modems
listed in this section. When a connection is made, this program will insert a LF
character into the receive buffer. If a connection is not made after dialing,
this program will insert a CR character into the receive buffer. Carrier control
will be supported by this program if you have enabled it with the INSTALL
program. The default baud rate will be the highest rate supported by the modem.
Unless otherwise stated, all internal modem cards use 6 850 devices.


APPLIED ENGINEERING DATALINK MODEM

This is a "smart" modem which provides the usual "smart" features. It supports
110, 300, or 1200 bps and provides pulse or tone dialing. This modem uses a Type
6551 device. MODEM MGR does not use the dip switch settings on the card so the
settings will not affect the operation with this software.


CERMETEK APPLEMATE MODEM

This is a "smart" modem which provides the usual "smart" features. It supports
110, 300, or 1200 bps and provides pulse or tone dialing. This modem uses a Type
6551 device. There are several configuration switches on the card. SW4 must be
closed and SW5 must be open. If you are using carrier control, SW10 must be set
open before you power your computer on. If you are not using carrier control,
set SW10 closed.


HAYES MICROMODEM II

The Hayes Micromodem II provides 110 or 300 bps communications and supports
pulse dialing. This modem consists of a plug-in card and an external
microcoupler unit. The card is connected with a cable to the microcoupler and
the microcoupler is connected with a cable to the phone line. In addition to the
normal status messages, MODEM MGR generates the following additional status
messages for this modem: RING, CONNECT, and NO CARRIER.


HAYES MICROMODEM IIE

The Hayes Micromodem IIe modem provides 110 or 300 bps communications and
supports pulse or tone dialing. This modem consists of a single plug-in card. In
addition to the normal status messages, MODEM MGR generates the following
additional status messages for this modem: RING, CONNECT, and NO CARRIER. To
mute the speaker when dialing, en ter a minus (-) as the first character to
dial.


HAYES SMARTMODEM 1200A

This is a "smart" modem which provides the usual "smart" features. It supports
110, 300, or 1200 bps and provides pulse or tone dialing. This modem uses a Type
6551 device. There are several configuration switches on the card. If you are
using carrier control, set switch 2 UP. If you are not using carrier control,
set switch 2 DOWN.


NOVATION APPLE-CAT II

The Novation Apple-CAT II modem supports tone or pulse dialing and baud rates of
50, 75, 110, 150, 300 and Bell 202 (half-duplex) 1200 bps. If you add the 212
upgrade card, this modem will also support Bell 212A (full-duplex) 1200 bps. In
addition to the normal status messages, MODEM MGR generates the following
additional messages for this modem: RING, CONNECT, and NO CARRIER. (NO CARRIER
is not used in the 202 mode). This modem does not use a Type 6850 device.

If you have installed the 212 upgrade card and you are installing either the
300/1200 or 202 modem driver, you will have to specify the location of the 212
card as well as the main card when the INSTALL program is run. You must specify
whether the 212 card is installed in a slot or used in the "slot-saver"
configuration. If you have installed it in a slot, you must specify which slot
it is in. If you move this card in or out of a slot or move it from one slot to
another, you will have to run the INSTALL program again and re-install the modem
driver with the new slot information.  Since two card slots may be involved, be
sure to specify the correct slot numbe r for each card when the INSTALL program
is run.

You have a choice of three different drivers in the INSTALL program. If you
don't have the 212 card, you should use the 300 baud driver. This driver
supports 50 to 300 bps. If you have the 212 upgrade card, you should use the
300/1200 baud driver. This driver supports both 300 and Bell 212A 1200 bps.

he third Apple-CAT driver supports the Bell 202 600 or 1200 bps half-duplex
mode. You may use this driver even if you don't have the 212 card. The other
system you are communicating with must also be using the same communications
format. Use the terminal F command to sel ect half-duplex when you are using
this driver.

MODEM MGR provides semi break-in keying in the 202 mode so two-way
communications can be efficiently accomplished with another user who has the
same type of modem and program. When you type a character on your keyboard, your
202 transmitter carrier will be automatically enabled and your typed character
will be transmitted. If you stop typing for a period of longer than
approximately one second, your carrier will be switched off and the other user
can transmit to you. Pause for a slight instant after you type the first
character to allow time for carrier switching.

Some communications operations do not have to be simultaneously two-way so you
can conduct those operations with other 202 users as long as both of you do not
transmit at the same time. If you have a telephone handset connected to the CAT
modem card, you can hear the carrier when the other user is transmitting. You
can toggle the handset on or off by typing a [CTRL] P.

You can also use the Bell 202 driver in the unattended mode and with XMODEM or
MMGR protocol file transfers. In these modes, the transmitter carrier stay-on
time will be shortened from one second to a fraction of a second whenever a
programmed transmission occurs. This will reduce the delay between
transmissions. If you are communicating with an unattended 202 system, you must
not transmit while the unattended system is transmitting. One advantage of this
202 mode is there is no carrier when the modems are not transmitting. When both
modems are in the receive state, both users can carry on a voice conversation
with telephones on the same line without having to switch modem modes. However,
neither user should speak on the phone while either modem is transmitting.


PROMETHEUS PROMODEM 12OOA

Do not confuse this internal plug-in modem with the ProModem 1200, which is
discussed later in the section on external modems. The 1200A is not only an
internal plug-in modem, it is also a "smart" modem. This modem supports 110,
300, or 1200 bps and provides pulse or tone dialing. This modem uses a Type 6551
device. In addition to the dialing commands supported by MODEM MGR, you can also
use the following com mand characters in the dial string:

     R    Switch to answer mode after dialing
     W    Wait for dial tone
     ;    Return to "smart" command mode after dialing

This modem has several configuration switches on the CPU card. Set switch 1 to
ON to ignore the DTR input. If you are not using carrier control, be sure switch
3 is set to ON. If you are using carrier control, set s witch 3 to OFF.

When you specify the modem card slot in the INSTALL program, be sure to specify
the slot the modem CPU card is in. This is the card with the speaker on it. If
the SPU card is in a slot, you do not have to specify that slot.

Although this modem has a built-in clock, its registers are not accessible
through the computer card bus so MODEM MGR cannot provide continuous time-of-day
or elapsed time display with this clock. However, you can set and read this
clock using the AT@T commands as described in the modem manual. You may use the
modem "smart" AT commands to access some modem features like setting the clock,
reading the clock, speaker control, or modem testing. However do not change any
thing that affects the duplex, command echo, result codes or the escape code
(+++).


SSM OR TRANSEND MODEMCARD

The Transend Modemcard provides 110 or 300 bps communications and supports pulse
or tone dialing. This modem consists of a single plug-in card. In addition to
the normal status messages, MODEM MGR generates the following additional status
messages for this modem: RING, CONNECT, and NO CARRIER. This program uses the
Apple speaker to monitor during dialing until a connection occurs. You may mute
the speaker while dialing by entering a minus sign (-) as the first character to
dial.


ZOOM MODEM ][ E

The Zoom Modem ][ e provides 110 or 300 bps communications and supports pulse or
tone dialing. This modem consists of a single plug-in card. In addition to the
normal status messages, MODEM MGR generates the following additional status
messages for this modem: RING, CONNECT, and NO CARRIER. If you want to mute the
speaker while dialing, enter a minus sign as the first character to dial.


ZOOM NETWORKER

The Zoom Networker modem supports 110 and 300 bps. This modem consists of a
single plug-in card with an external switch. In addition to the normal status
messages, MODEM MGR generates the following additional status messages for this
modem: CONNECT and NO CARRIER. Dial, answer, and hangup must be performed
manually. Therefore, this program will not support the terminal commands H, O,
T, U, and W with this modem.


INTERNAL PLUG-IN SERIAL CARDS

This section will describe some of the popular plug-in serial or communications
cards supported by MODEM MGR. The cards commonly available for the Apple
computer fall into four general classifications based on the type of
communications device used. An inspection of the card, card schematic, or card
parts list will show you which type of device is used.

A Type 2651 card uses a 2651 device and can provide you software selection of 16
of the more common baud rates from 50 to 19200 baud. Select any one of these
rates by using the M command in the terminal command mode. There are several
combinations of number of data bits, number of stop bits, and type of parity
which you can use. You may select from eight of these combinations by using the
J command in the terminal command mode.


Type 8530 (IIGS) and Type 6551 cards can provide you software selection of 15 of
the more common baud rates from 50 to 19200 baud. Select any one of these rates
by using the M command in the terminal command mode. There are several
combinations of number of data bits, number of stop bits, and parity which you
can use. You may select from eight of these combinations by using the J command
in the terminal command mode.

The Type 6850 card uses a 6850 device. On most Type 6850 cards, you may choose
between two software-selected baud rates. You can specify one of the two baud
rates (usually from 50 to 19200 baud) by setting switches on the card. The other
baud rate will be one-fourth of the baud rate you have selected. For example, if
you set the card switches for 1200 baud, a choice of 1200 or 300 baud will be
available when you use the M command in the terminal command mode. There are
eight different combinations of number of data bits, number of stop bits, and
type of parity which you can select. You may select any of these eight
combinations with the J command in the terminal command mode.

The Type 8251 card uses a 8251 device. MODEM MGR supports only one Type 8251
card (Quadram Multicore). This card provides software selection of eight baud
rates from 150 to 19200 baud. You can select any one of these rates by using the
M command in the terminal command mode. There are several combinations of number
of data bits, number of stop bits, and parity which you can use. You may select
from eight of these combinations by using the J command in the terminal command
mode.


COMMUNICATION PARAMETER DEFAULTS

If your serial or communications card does not provide some method to allow you
to permanently set defaults, MODEM MGR will normally default to 8 data bits, 1
stop bit, and no parity. You can change these defaults by using the INSTALL
program to specify the communications command and control bytes for Type 2651,
6551, 6850, 8251, and 8530 cards. For all except Type 6850 cards, you can also
specify the default baud rate by defining the communications control byte.

Usually these serial cards have built-in firmware which provide some
communications capabilities. You can run the serial card firmware program by
typing a PR# n and/or an IN# n, where n is the serial card slot number. The
capabilities provided by the card firmware are not as elaborate as those
provided by a full-featured communications program, but you can use these
capabilities to determine if the card is working properly. MODEM MGR does not
use the firmware routines and any commands associated with the serial card
firmware are not recognized.

Some manufacturers of serial cards provide a communications program on disk. Any
communications characteristics you set when you run the disk program or the
serial card firmware will not be retained when MODEM MGR is run. For example,
baud rate, line feed insertion, duplex mode, and upper/lower case will be
redefined by MODEM MGR regardless of the previous settings.


CONTROL INPUTS AND OUTPUTS

Unless we state otherwise, any discussion in this chapter about the serial card
connector will refer to the DB-25 connector on the end of the cable provided
with the card. The serial card output will be on pin 2 and the input will be on
pin 3 of the DB-25 connector unless we point out any differences.

Most serial cards have a receiver control input which enables or disables the
receiver. This control input will be used by MODEM MGR for the modem
carrier-detect signal if carrier control is enabled. Many serial cards also have
a transmitter control input which enables or disables the transmitter. This
control input must be kept "high".

Most serial cards also have a control output. If your modem DTR input requires a
"high" signal, this control output can be used to provide this signal. MODEM MGR
usually sets this output "high" except during software-controlled hangup of an
auto modem. You can use the control output as a "high" signal source if
required.

Although these serial cards can also be used as serial printer interface cards,
the following descriptions apply only when these cards are used with a modem.


APPLE //C

Although it is not a plug-in serial card, the //c serial interface can be
considered as functionally similar to a Type 6551 card. Connect your modem to
the five-pin round DIN connector (Serial Port 2) on the rear of t he //c. The
pin assignments are:

     Pin 1     Control output
     Pin 2     Data from // c to modem
     Pin 3     Circuit common (ground)
     Pin 4     Data from modem to // c
     Pin 5     Receiver control input

These pin numbers follow Apple's convention of numbering the five pins consecut
ively (l-2-3-4-5). You will find another convention commonly used with these DIN
connectors where the pins are numbered alternately (l-4-2-5-3). If you are
constructing your own cable using DIN connectors, be sure to use the correct
numbering system.

The receiver control input on pin 5 has an internal pull-up. If you want to use
carrier control, connect the modem carrier-detect signal to pin 5. If you don't
want to use carrier control, disconnect the signal to this pin or connect it to
a continuously "high" signal. There is no transmitter control input.

Early versions of //c computers with serial numbers below D510001 do not have a
dedicated crystal to develop the baud rate reference. The reference signal used
is slightly off-frequency so errors will occur if you use some modems at high
baud rates and/ or high character sending rates. The Apple Modem 300 or 1200
will operate with early //c computers with no problem. Later versions of the //c
do not have this characteristic.


APPLE IIGS MODEM PORT

This uses a Type 8530 device. The default start-up setting for this port is 1200
baud with 8 data bits, one stop bit and no parity. You may change this start-up
setting by defining the communications command and control bytes in Appendix B.

The transmitter and receiver are always enabled. The carrier control input is on
pin 7 and the control output is on pin 1 of the 8-pin mini-DIN connector. If the
settings in the IIGS control panel (slot, handshake, baud rate, etc.) were
changed while the program was running, they would conflict with the operation of
MODEM MGR. Therefore, all of the applicable control panel settings are ignored
by this program. If you try to access the control panel while MODEM MGR is in
operation, the control panel will not appear until you quit the program.


APPLE COMMUNICATIONS CARD

This is a Type 6850 card which does not have any control inputs or outputs. The
refore, you cannot use this card to support carrier control or force an auto
modem to hang up. The two software-selectable baud rates are permanently set for
300 and 110 baud.

You can achieve higher baud rates by modifying the card as described in your
card manual.


APPLE SUPER SERIAL CARD

This is a Type 6551 card with several switches and a jumper block which provide
a flexible configuration capability. You must install the jumper block so the
arrow points up to the word MODEM Set the switches to the desired default baud
rate and communications parameters. When MODEM MGR is run, it will read the
settings of these switches and set the defaults accordingly. However, if you
have used the INSTALL program to set a non-zero value for the communications
command byte, the values you have specified for the communications command and
control bytes will override the switch defaults.

The receiver control input is on pin 8 and the transmitter control input is on
pin 5. Both pins have internal pull-ups. The control output is on pin 4 and pin
20 is programmed to be a continuously "high" output. Switch SW2-7 should be set
OFF. If you want to use carrier control, set switch SWl-7 to ON and connect the
modem carrier-detect signal to pin 8. If you don't want to use carrier control,
set switch SWl-7 to OFF to disconnect the receiver control input from pin 8.

If your serial card is compatible with a Super Serial Card but is not an Apple
card, install the Street Alphabits driver instead.


APRICORN SERIAL INTERFACE CARD

This is a Type 6850 card with two cable connectors. Be sure to use the connector
labelled MODEM. The receiver control input is on pin 6 and the transmitter
control input is on pin 5. These pins do not have internal pull-ups, so they
must both be held "high" by an external signal for two-way communications. If
you want to use carrier control, connect the modem carrier-detect signal to pin
6. The control output is on pin 4 and pin 20 is a continuously "high" output.


APRICORN SUPER SERIAL IMAGER CARD

This is a Type 6551 card with several switches which provide a flexible
configuration capability. Set the switches to the desired default baud rate and
communications parameters. When MODEM MGR is run, it will read the settings of
these switches and set the defaults accordingly. However, if you have used the
INSTALL program to specify a non-zero value for the communications command byte,
the values you have specified for the communications command and control bytes
will override the default values.

This card has two cable connectors. Be sure to connect the modem cable to the
connector labelled MODEM.

The receiver control input is on pin 8. The transmitter control input is on pin
5. Both pins have internal pull-ups. If you want to use carrier control, set
switch SWl-7 to ON and connect the modem carrier-detect signal to pin 8. If you
don't want to use carrier control, set switch SWI-7 to OFF. The control output
is on pin 4 and pin 20 is programmed to be a continuously "high" output.


AST MULTI I/ O CARD

This is a multi-function card which provides serial printer, serial modem, and
clock functions on the same card. You must map each desired function to a card
slot by installing jumpers into configuration blocks. You must also map one of
the functions to the physical slot the card is in. Map the modem serial function
to slot 2 or 3. Refer to the card manual for instructions in selecting the
mapped slot assignments. Use these mapped slot numbers instead of the actual
physical slot number whenever a slot number is requested by the INSTALL program.

The two serial sections of the card are both Type 6850 and there is a separate
cable connector for each. Be sure to connect to the communications port
connector and not the printer port connector.

The following applies to the DB-25 connector on the cable connected to the
communications port connector. The receiver control input is on pin 6 and has an
internal pull-up. If you want to use carrier control, connect the modem
carrier-detect signal to pin 6. If you don't want to use carrier control,
disconnect the signal to this pin or connect this pin to a continuously "high"
signal. The control output is on pin 20. There is no transmitter control input.


CALIFORNIA COMPUTER SYSTEMS 7710 CARD

This is a Type 6850 card with pins 2 and 3 reversed when used with a modem. You
must correct this reversal when you connect this card to a modem. The receiver
control input is on pin 20 and the transmitter control input is on pin 4. These
pins do not have internal pull-ups, so they must both be held "high" by an
external signal for two-way communications. If you want to use carrier control,
connect the modem carrier-detect signal to pin 20. The control output is on pin
5. Pins 6 and 8 have continuously "high" outputs.


CALIFORNIA COMPUTER SYSTEMS 7711 CARD

This is a Type 6551 card. Set the baud rate jumpers for the desired default baud
rate. When MODEM MGR is run, it will read the position of these jumpers and set
the default baud rate accordingly. However, if you have used the INSTALL program
to set a non-zero value for the communications command byte, the value you have
specified for the communications control byte will override the default baud
rate. Be sure the DTE/DCE header plug is plugged into the card block in the DTE
configuration.

Set the "RTS" by-pass jumper to the OFF side. If you set the "DTR" handshake by
pass jumper to the ON side, the receiver control input will be on both pins 6
and 8. If you want to use carrier control, connect the modem carrier-detect
signal to pin 6 or 8 and set the "DTR" handshake by-pass jumper to the ON side.
If you don't want to use carrier control, set the "DTR" handshake by-pass jumper
to the OFF side. This will pull the receiver control input high. There is no
transmitter control input. The control output is on the pin selected by the
handshake select jumper. Do not place this jumper on the pin 20 position. Pin 20
is programmed to be a continuously "high" output.


FRANKLIN ACE DUAL I/O CARD

When you install the parallel printer or serial card driver, specify the
physical slot the card is in. Do not specify the phantom slot. The serial
section of the card is a Type 2651 card. Set the card switches to the desired
default baud rate and communications parameters. When MODEM MGR is run, it will
read the settings of these switches and set the defaults accordingly.

However, if you have used the INSTALL program to set a non-zero value for the
communications command byte, the values you have specified for the
communications command and control bytes will override the switch defaults. The
baud rate settings are slightly different than listed in Appendix B of this
manual. The settings should be 0000=45, 0001=50, 0010=75, 0011=110, 0100=135,
0101=150, 0110=300, 0111=600, 1000=1200, 1001=1800, 1010=2000, 1011=2400,
1100=4800 , 1101=9600, 1110=19200, 1111=38400.

The transmitter control input is on pin 5 if switch S3 is ON and the receiver
control input is on pin 8. Both pins have internal pull-ups. The control output
is on pin 20 if switch Sl is ON.


MICROTEK SV-622 SERIAL CARD

If you have this Type 6551 serial card, specify the Street Alphabits serial card
when you run the INSTALL program. MODEM MGR will not read the card switches, but
will default to 1200 baud, 8 data bits, 1 stop bit, no parity, unless you
install different communications command and control bytes. Set the polarity
jumper between the center and top pins and connect the cable to P2. The receiver
control input is on pin 8 and the transmitter control input is on pin 5. Both
pins have internal pull-ups. If you want to use carrier control, connect the
modem carrier-detect signal to pin 8. The control output is on pin 4 and pin 20
is programmed to be a continuously "high" output.


MOUNTAIN HARDWARE CPS CARD

This is a multi-function card which provides parallel printer, serial modem, and
clock functions on the same card. Although you can map each function to a
phantom slot, it is not necessary to do so for this program. Use the actual
physical slot number of this card for any of its functions whenever a slot
number is requested by the INSTALL program.

The serial section of the card is a Type 2651 card. The receiver control input
is on pin 8 and the transmitter control input is on pin 5. These pins do not
have internal pull-ups so they must be set "high" by an external signal for
two-way communications. If you want to use carrier control, connect the modem
carrier-detect signal to pin 8. The control output is on pin 4 and pin 20 is
programmed to be a continuously "high" output.


PRACTICAL PERIPHERALS SERIALL CARD

This is a Type 6551 card with several switches which provide a flexible
configuration capability. Set the switches to the desired default baud rate and
communications parameters. When MODEM MGR is run, it will read the settings of
these switches and set the defaults accordingly. However, if you have used the
INSTALL program to specify a non-zero value for the communications command byte,
the values you have specified for the communications command and control bytes
will override the default values.

Two cable connectors are provided. Be sure to connect the modem cable to the co
nnector labelled MODEM.

Set the Berg jumper on position 5. In position 5, the receiver control input is
on pin 8. The transmitter control input is on pin 5. Both pins have internal
pull-ups. If you want to use carrier control, connect the modem carrier-detect
signal to pin 8. If you don't want to use carrier control, disconnect the signal
to this pin or connect pin 8 to a continuously "high" signal. The control output
is on pin 4 and pin 20 is programmed to be a continuously "high" output.


PROMETHEUS VERSACARD

This is a multi-function card which provides parallel printer, serial, and clock
functions on the same card. Although you can map the parallel printer and clock
functions to other slots, the serial function always appears in the actual
physical card slot and you should specify this slot when you install the
communications function with the INSTALL program.

The serial section of the card is a Type 6850 card. The receiver control input
is on pin 6 and the transmitter control input is on pin 5. These pins have
internal pull-ups. If you want to use carrier control, connect the modem
carrier-detect signal to pin 6. If you don't want to use carrier control,
disconnect any signal to this pin or connect this pin to a continuously "high"
signal. The control output is on pin 4 and pin 20 is always a continuously
"high" output.


QUADRAM MULTICORE CARD

This is a multi-function card which provides parallel printer, serial, clock,
and extended memory functions on the same card. You must install this card in
slot 1. Specify slot 1 when you install the serial communications function in
the INSTALL program. MODEM MGR does not support the extended memory on this card
except when it is used as a ProDOS RAM disk.

The serial section of the card is a Type 8251 card. The transmitter control
input is on pin 5. There is no receiver control input. However, there is another
type of control input on pin 6. Both pins 5 and 6 have internal pull-ups. If you
want to use carrier control, connect the modem carrier-detect signal to pin 6.
If you don't want to use carrier control, it does not matter if pin 6 is held
high or low. The control output is on pin 4.

The manufacturer supplies this card with a ProDOS configuration program on disk
. Use this configuration program to set the desired default modem baud rate and
communications parameters for virtual slot 2. After these have been set, save
the settings permanently in the non-volatile RAM. Whenever you run MODEM MGR, it
will read the contents of the non-volatile RAM and set the baud rate, number of
data bits , number of stop bits, and parity to the communications settings you
have permanently stored for virtual slot 2.

However, if you have used the INSTALL program to set a non-zero value for the
communications command byte, the values you have specified for the
communications command and control bytes will override the non-volatile RAM
defaults. To use this override feature, set the value of the desired 8251 mode
control word for the communications comm and byte and set one of the following
values for the communications control byte.

Communications      Baud
Control Byte        Rate

     00             150
     01             300
     02             600
     03             1200
     04             2400
     05             4800
     06             9600
     07             19200



STREET ELECTRONICS ALPHABITS CARD

This is a Type 6551 card with a cable usually equipped with a five-pin round DIN
connector. The pin connections are:

     Pin 1     Control output
     Pin 2     Output data to the modem
     Pin 3     Circuit common (ground)
     Pin 4     Input data from the modem
     Pin 5     Receiver control input

These pin numbers follow Apple's convention of numbering the five pins consecut
ively (l-2-3-4-5). You will find another convention commonly used with DIN
connectors where the pins are numbered alternately (l-4-2-5-3). If you are
constructing your own cable using DIN connectors, be sure to use the correct
numbering system.

The receiver control input on pin 5 does not have an internal pull-up. If you
want to use carrier control, connect the modem carrier-detect signal to pin 5.
If you don't want to use carrier control, connect this pin to a continuously
"high" signal. There is no transmitter control input.


STREET ELECTRONICS BUSINESSCARD

This is multi-function card with two Type 6551 serial channels and a clock
function. The card must be placed in slot 1. When you run the INSTALL program,
specify slot 1 for the printer and clock functions, and slot 2 for the serial
communications function.

Set the card switches to the desired default baud rate and communications
parameters. When MODEM MGR is run, it will read the settings of these switches
and set the communications defaults accordingly. However, if you have used the
INSTALL program to specify a non-zero value for the communications command byte,
the values you have specified for the communications command and control bytes
will override the default values.

The clock time-of-day display will not show AM or PM. For additional information
on the printer and communications features of this card, refer to description of
the Street Alphabits card.


THIRDWARE FINGERPRINT PLUS CARD

If you have the Fingerprint Plus card, select the Street Alphabits driver for t
he serial function and the Orange Grappler + for the parallel function. There is
an error in the card manual's description of the connections between the card
serial connector and the modem port. Pin 1 on the card serial connector should
be connected to pin 8 of the modem (instead of pin 6 or 20). On the Apple Modem,
pin 1 on the card serial connector should be connected to pin 7 of the modem
DB-9 connector (instead of pins 2 and 6). If you are not using carrier control,
you don't need any connection to pin 1 of the card serial connector.


TRANSEND OR SSM AI0 CARD

This is a dual-function card which provides both a parallel printer and a serial
function. The serial function uses a Type 6850 device. Both functions are
associated with the physical slot the card is plugged into.

You can use the M terminal command to select the high or low baud rate. Set the
rotary switch on the card for the desired high baud rate. Divide the labelled
baud rate by four when you are using the low baud rate. If you have modified the
card to double the baud rate, multiply the labelled baud rate by two when you
use the high baud rate and divide the labelled baud rate by two when you use the
low baud rate.

The receiver control input is on pin 8 and the transmitter control input is on
pin 5. These pins have internal pull-ups. If you are using carrier control,
connect the modem carrier-detect signal to pin 8. The control output is on pin 4
and pin 20 is always a continuously "high" output.


TRANSEND OR SSM ASIO CARD

This is a Type 6850 card with two cable connectors. Be sure to use the connector
labelled MODEM. The receiver control input is on pin 8 and the transmitter
control input is on pin 5. Both of these pins have internal pull-ups. If you are
using carrier control, connect the modem carrier-detect signal to pin 8. If you
don't want to use carrier control, disconnect any signal to this pin or connect
this pin to a continuously "high" signal. The control output is on pin 4 and pin
20 is always a continuously "high" output.


VIDEX PSI0 CARD

This is a dual-function card which provides both a parallel printer and a serial
function. The serial function uses a Type 6551 device. You must assign one
function to the actual physical card slot. You can phantom the other function to
another slot. When you are running the INSTALL program, specify the actual
hardware slot. MODEM MGR uses the actual slot and not the phantom slot to access
the card. The manufacturer supplies this card with a utility configuration
program on disk. Use the utility program to set the desired default baud rate
and communications parameters. After you have set these, save the settings
permanently in the non-volatile RAM (NOVRAM) on the card by pressing the save
button. When MODEM MGR is run, it will read the contents of the NOVRAM and set
the baud rate, number of data bits, number of stop bits, and parity accordingly.

However, if you have used the INSTALL program to specify a non-zero value for
the communications command byte, the values you have specified for the
communications command and control bytes will override the NOVRAM defaults.

The card has two serial cable connectors. Be sure the cable is connected to the
connector labelled MODEM or DTE on the card. If you install jumper J2 on the
card to connect the right-most and center pin of the three-pin set, the receiver
control input will be on pin 5. The transmitter control input is on pin 8. Both
pins have internal pull-ups. If you want to use carrier control, connect the
modem carrier-detect signal to pin 5. If you don't want to use carrier control,
place jumper J2 to connect the left-most and center pin of the three-pin set.
This will internally disconnect the receiver control signal from pin 5. The
control output is on pin 4 and pin 20 is programmed to be a continuously "high"
output.

A few PSIO cards have a black dip switch instead of a red one. On these, the
phantom slot settings may differ from those given in the manual. Use the utility
program to display the status of the slot assignments so you can verify your
switch settings.


EXTERNAL MODEMS

If your modem has a DTR switch, we recommend it be set initially so the modem
ignores the DTR input. After you have verified you can conduct two-way
communications with this program, you may wish to set this switch so it responds
to the control output from the serial card.

Connect the modem to your computer and power the modem on before you run MODEM
MGR. If your modem power is interrupted or turned on after the program has
started, enter the terminal mode hangup comm and (H) to initialize the modem.

Although your serial card may support a large choice of baud rates and
communications parameter combinations, most modems will support only a few of
these. Refer to your modem manual to determine which baud rates, number of data
bits, number of stop bits, and type of parity your modem supports.

When some modems answer a call, they will automatically change their baud rates
to match the baud rate of the calling system. If this occurs, you must use the M
terminal mode command to set the new baud rate for your serial card. MODEM MGR
does not respond automatically to changes in baud rate initiated by the modem.

Many external modems in current use are "smart" modems. These modems offer
several features which are controlled by command character strings received from
the computer. MODEM MGR translates your terminal commands to the character
strings recognized by the modem. You may also control the modem directly by
typing the character strings on the keyboard. For example, one way you can
hangup a Hayes Smartmodem while on-line is to perform the following:


1) Wait for one second
2) Type +++
3) Wait for one second
4) Type ATH [RETURN]

However, you can perform a hangup more easily by using the terminal mode hangup
command, which is [ESC] H or oa-H. This command does essentially the four steps
listed for you.


APPLE MODEM 300 OR 1200 This is a "smart" modem which provides the usual "smart"
features. This modem uses a nine-pin DB-9 connector instead of a DB-25
connector. The pin assignments are:

Modem DB-9          DB-25          DIN
Connector           Connector      Connector      Function
                    590-0121       590-0192

     1                                            Not used
     2                   6              5         DSR modem output
     3                   7              3         Signal common (ground)
     4                                            Not used
     5                   3              4         Modem signal output
     6                   20             1         DTR modem input
     7                   5,8                      DCD carrier detect
     8                   1              shell     Chassis ground
     9                   2              2         Modem signal input


The DB-25 connector pins are shown for the Apple Part No. 590-0121 (][+ or //e )
cable and the DIN connector pins are shown for the Apple Part No. 590-0192 (//c)
cable when the cable is connected to the modem. If you are using a different
cable, the pin assignments may be different.

The 590-0192 cable normally used with the //c does not handle the modem
carrier-detect (DCD) signal. You cannot use carrier control with this cable
unless you perform some cabling modifications.  Chapter 11 describes an adapter
you can use to provide the carrier detect signa l with this cable.

The 590-0121 cable normally used with the ][+ or //e provides the modem
carrier-detect signal on two pins (5 and 8) of the DB-25 connector.

The pin 2 (DSR) output on the modem DB-9 connector is always "high" when the
modem is powered on.


APPLE PERSONAL MODEM

This is a "smart" modem which provides the usual "smart" features. This modem
uses an unusual eight-pin connector instead of a DB-25 connector. When this
modem is used with an Apple Part No. 590-0331 (][+ or //e ) cable or Apple Part
No. 590-0333 (//c) cable, the pin assignments are listed below. Although the
modem has a carrier-detect (DCD) output, neither cable handles it. You cannot
use carrier control with these cables.

The modem DSR output is always "high" when the modem is powered on.


     DB-25          DIN
     Connector      Connector      Function
     590-0331       590-0333

     7              3              Signal common (ground)
     3              4              Modem signal output
     2              2              Modem signal input
     6,8            5              DSR modem output
     20             1              DTR modem input



AVATEX 1200 MODEM

The E+ E DataComm Avatex 1200 modem is a "smart" modem which supports pulse or
tone dialing, answer, hangup, and many other features. This modem is not fully
Smartmodem-compatible so be sure to install the Avatex modem driver. Initially
the modem option switches 1 through 5 should be set OFF (up) and switches 6, 7,
and 8 should be set ON (down).

If you use the comma (,) in a dialing string, it will provide a four-second
delay instead of a two-second delay. In the answer mode, this modem will
automatically switch baud rates to match the incoming call. If this occurs, you
must use the M terminal mode command to select the new baud rate for the serial
card. You probably have to reset the modem 300/1200 switch also.

The modem will normally hang up when carrier is lost. If you want to be able to
force hangup with the H command, connect the serial card control output to pin
20 of the modem and set option switch 6 to OFF (up). If you want to use carrier
control, connect the serial card receiver control input to pin 8 of the modem
and set option switch 7 to OFF (up).

Since the modem command echo cannot be disabled, a feedback loop can occur if
the modem is in the command mode when received characters are echoed in the
unattended mode. If you plan to use the unattended mode, use carrier control and
hangup control to minimize this possibility. If you have the Avatex HC model,
use the Hayes SmartModem driver and refer to the description of that modem.


"HAYES-COMPATIBLE" MODEMS

There are dozens of "smart" modems which use the same command set as the Hayes
Smartmodem. Although the degree of compatibility varies, most of these modems
will work with MODEM MGR if the Hayes Smartmodem 300 or 1200 driver is selected
in the INSTALL program. If your Hayes-compatible modem is not listed on the
INSTALL program menu of external modem drivers, install the Hayes Smartmodem 300
or 1200 driver. Note there is a separate driver that must be used with the Hayes
Smartmodem 2400.


HAYES SMARTMODEM 300 OR 1200

This is a "smart" modem which provides pulse or tone dialing, answer, hangup,
automatic communications parameter selection, and many other features. This
modem has established the "standard" character string commands used to control a
"smart" modem. When a modem claims to be "Hayes-Smartmodem-compatible", it
refers to the use of the same set of commands.

The modem carrier-detect output signal (DCD) is on pin 8 and the pin 5 (CTS)
output is always "high" when the Hayes modem is powered on.

HAYES SMARTMODEM 2400 This is a "smart" modem which provides the same features
as the Smartmodem 1200 except it also supports 2400 bps and some synchronous
modes. This modem has no configuration switches. When you use this modem for the
first time, the active configuration profile is the factory-set profile. You can
modify the active profile by entering configuration commands. You can
permanently save the presently active configuration profile to the modem
non-volatile memory by using the AT&W modem command. When you power the modem on
and run MODEM MGR, the saved profile will become the present active
configuration.

The modem carrier-detect output signal (DCD) is on pin 8 and the pin 5 (CTS)
output is always "high" in the asynchronous mode.


KANTRONICS UNIVERSAL TERMINAL UNIT

The Kantronics Universal Terminal Unit is a terminal unit (TU) which interfaces
a computer with a short-wave radio receiver. This TU decodes and displays the
received text from Morse code, Baudot radio-teletype (RTTY), ASCII RTTY, and
AMTOR. It supports Morse code speeds of 6 to 99 words per minute, Baudot RTTY
speeds of 60, 67, 75, 100, and 132 words per minute, and ASCII RTTY speeds of
110, 150, 200, and 300 baud.

This TU uses a "conventional" serial interface at 300 baud with 8 data bits, one
stop bit, and no parity through a five-pin DIN connector. Output data to the
computer serial card is on pin 3 and input data from the computer serial card is
on pin 1 of the COMP connector. Pin 2 is signal ground (common). The pin
numbering convention of this DIN connector is not the same as the Apple
convention. The pin numbering sequence on this connector is l-4-2-5-3.

If you have the appropriate radio license and a transmitter, you may also use
the TU and this software for transmitting. Since the TU uses the escape
character as a command lead-in character, you will probably want to change the
MODEM MGR command key from escape to another control character. Use the INSTALL
program to change the command key.

Install the "non-smart" modem driver for this unit. The split-screen video with
keyboard block mode is recommended if you will be performing transmit
operations. This allows you to type in your next transmission while receiving
the incoming text. Since the TU has a 32-byte input buffer and the keyboard
block mode can send up to 256 characters, you must prevent buffer overflow by
enabling the XON/ XOFF option on the TU.


NOVATION SMART-CAT MODEM

This is a "smart" modem which supports pulse or tone dialing, answer, hangup,
and many other features. The command prefix character is a percent (%)
character. Do not re-program this character because MODEM MGR uses it as a
command prefix when directing a modem operation. You may also enter commands
directly to the modem by typing % followed by the command string.

The driver provided supports the current modem version which issues a CONNECT
message when a connection is made. If you have the earlier version which issues
a READY message instead, the W terminal command and unattended mode will not
operate correctly if you have disabled carrier control. These functions will
work properly if you have enabled carrier control. A modified driver for the
earlier version is available.

The modem carrier-detect signal (DCD) is on pins 5, 6, and 8.

Set the speed switch on this modem to match the default baud rate on your serial
card. To change baud rates, you must type the %S n command to the modem, where n
is the number (0, 1, or 2) corresponding to the new baud rate, then enter the
[ESC] M terminal command to set the new baud rate for the serial card.


PROMETHEUS PROMODEM 1200

Do not confuse this external modem with the ProModem 1200A, which is discussed
in the earlier section on internal plug-in modem cards. This is a "smart" modem
which supports the usual "smart" features as well as some additional ones. In
addition to the dialing commands s upported by MODEM MGR, the 1200 modem also
allows the following command characters in the dial string:

     R    Switch to answer mode after dialing
     W    Wait for second dial tone
     ;    Return to "smart" command mode after dialing

Although this modem has a built-in clock, its registers are not accessible
directly through the computer card bus so MODEM MGR cannot support continuous
display of time-of-day or elapsed time with this clock. However, you can set and
read this clock using the AT@T commands as described in the modem manual.

The carrier-detect signal (DCD) is on pin 8. Pin 5 (CTS) is usually held "high".
When a modem command is being executed pin 5 will go low momentarily.


TAPR TERMINAL NODE CONTROLLER TNC 1 OR 2

This terminal mode controller (TNC) provides an interface between the computer
and a radio transmitter/receiver (transceiver). It formats the data into packets
for transmitting, demodulates received packets, verifies the integrity of
packets, manages the traffic flow, and controls the transceiver.

The TNC performs all of these functions with its built-in processor so your
computer functions solely as a dumb terminal. The TNC interfaces with the
terminal over a conventional serial interface. Pin 3 on the TNC DB-25 connector
outputs data to the terminal and pin 2 inputs data from the terminal. Use the
"non-smart" modem driver.

You can program several baud rates and combinations of word length, number of
stop bits, and parity on the TNC. If you are using the split display with block
keyboard mode at high baud rates, you may wish to set ECHO to OFF and SCREENL to
0.


US ROBOTICS COURIER 2400 MODEM

This modem supports the usual "smart" features as well as a baud rate of 2400
bps. In addition to the usual configuration switches, this modem has a reversal
switch which transposes the functions of pins 2 and 3 on the DB-25 connector, if
necessary. The carrier-detect output signal (DCD) is on pin 8 and the pin 5
(CTS) output is always "high" when the modem is powered on.

This modem will automatically switch baud rates from 2400 to 1200 bps if the
other system being called operates at 1200 bps only. If this occurs, you must
use the M terminal mode command to select the new baud rate for the serial card.