BayTech BayTech DS71-MD4 User manual

2019
COPYRIGHT2019
BayTechnicalAssociates,Inc
10/1/2019
DATASWITCHDS71‐MD4

Page2
TableofContents
COMPLIANCESTANDARD..............................................................................................................................................................5
CONNECTIONDESCRIPTION...........................................................................................................................................................6
EIA‐232SERIALCONNECTION........................................................................................................................................................6
INTERNALMODEMCOMMUNICATIONS........................................................................................................................................6
MODEMLEDDESCRIPTIONS..........................................................................................................................................................6
EXTERNALMODEMCOMMUNICATIONS........................................................................................................................................6
INSTALLATION...............................................................................................................................................................................7
UNPACKING..................................................................................................................................................................................7
PREPARINGTHEINSTALLATIONSITE...............................................................................................................................................................7
POWER..................................................................................................................................................................................................7
CABLING........................................................................................................................................................................................8
RJ‐45CABLE.............................................................................................................................................................................................8
ADAPTERS..............................................................................................................................................................................................10
SERIALSETUP..............................................................................................................................................................................10
QUICKSTART:DS71‐MD4SERIES.................................................................................................................................................11
CONFIGURATION:.....................................................................................................................................................................................11
MAINMENU................................................................................................................................................................................15
CONFIGURATIONMENU:.............................................................................................................................................................16
DS71‐MD4CONFIGURATIONMENU:............................................................................................................................................16
STATUS..................................................................................................................................................................................................16
SERIALPORTCONFIGURATION....................................................................................................................................................................18
Exit/Save.........................................................................................................................................................................................18
SetBaudRate.................................................................................................................................................................................18
WordSize........................................................................................................................................................................................19
StopBits..........................................................................................................................................................................................19
Parity..............................................................................................................................................................................................19
XON/XOFF.......................................................................................................................................................................................20
RTS/DTRLineDriverInactivityState...............................................................................................................................................20
PORTDEVICENAME.................................................................................................................................................................................20
PORTSELECTCODE..................................................................................................................................................................................20
ATTENTIONCHARACTER............................................................................................................................................................................21
DISCONNECTTIMEGUARD..........................................................................................................................................................................21
CONNECTPORTIDECHO...........................................................................................................................................................................21
LOGINSETUPMENU.................................................................................................................................................................................22
Header............................................................................................................................................................................................22
AccessControl................................................................................................................................................................................22
Menu..............................................................................................................................................................................................23
ManageUsers................................................................................................................................................................................23
Auto‐Connect..................................................................................................................................................................................23
Dial‐BackNumbers.........................................................................................................................................................................24
AssignUserPorts............................................................................................................................................................................24
LocalModemOption......................................................................................................................................................................25
UnitID.............................................................................................................................................................................................26
I/OMODULESRESET....................................................................................................................................................................26
UNITRESET.................................................................................................................................................................................27

Page3
EXIT.............................................................................................................................................................................................27
LOGOUT......................................................................................................................................................................................27
FACTORYDEFAULTPROCEDURE..................................................................................................................................................27
BASICTROUBLESHOOTING..........................................................................................................................................................28
BAYTECHPRODUCTWARRANTY..................................................................................................................................................29
EXCEPTIONS............................................................................................................................................................................................29
BAYTECHEXTENDEDWARRANTY................................................................................................................................................................29
TECHNICALSUPPORT................................................................................................................................................................................30
REPAIRPOLICY.........................................................................................................................................................................................30
RETURNAUTHORIZATIONPROCESS:.............................................................................................................................................................31
Serial1:PortPinoutTable_____________________________________________________________________________________9
Serial2:RJ08X007Pinout_____________________________________________________________________________________9
Serial3:RJ45Receptacle&Plug________________________________________________________________________________9
Serial4:9FRJ45PC‐1AdapterPinOut___________________________________________________________________________10
Serial5:9FRJ45PC‐4AdapterPinout____________________________________________________________________________10
Figure1:NetworkController__________________________________________________________________________________12
Figure2:ModuleConfiguration________________________________________________________________________________12
Figure3:DS71‐MD4Configuration_____________________________________________________________________________12
Figure4:LoginSetup________________________________________________________________________________________13
Figure5:ManageUser_______________________________________________________________________________________13
Figure6:UserPassword______________________________________________________________________________________13
Figure7:AssignUserPorts____________________________________________________________________________________14
Figure8:AccessControl______________________________________________________________________________________14
Menu1:MainManu_________________________________________________________________________________________15
Menu2:ModuleConfiguration________________________________________________________________________________16
Menu3:DS71‐MD4Configuration______________________________________________________________________________16
Menu4:SerialPortConfiguration______________________________________________________________________________18
Menu5:LoginSetup_________________________________________________________________________________________22
Menu6:ManageUsers______________________________________________________________________________________23
Menu7:DialBack___________________________________________________________________________________________24
Menu8:LocalModem_______________________________________________________________________________________25

Page4
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
DS71‐MD4Serial&56KModemHostModule
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ReplacesDS71‐MD3,33.6Kmodem
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Page5
ABOUTTHISDS71‐MD4OWNER’SMANUAL
COMPLIANCESTANDARD
This document is applicable to the DS71-MD4 Serial/Modem Module. This document provides
information required for installing and operating your Bay Tech equipment. It should allow the user to
connect to, power up, and access an applications menu where peripheral equipment can be controlled.
We recommend reading this manual carefully, while placing special emphasis on correct cabling and
configuration. If you have any problems with your installation, please contact a BayTech Applications
Engineer at 228-563-7334, or toll free from anywhere in the United States using 1-800-523-2702 or
contact us at our Web Site, www.baytech.net.
BayTech manufactures many remote site management power products and data switches. If you would
like information on any of these products, please contact BayTech Customer Service at the above
numbers or visit our web site.
Conventions used in this manual include:
CAUTION: This term is used to denote any condition that could possibly result in physical
harm to personnel or damage to equipment.
IMPORTANT: This term is used to denote conditions that could result in the loss of
communications or to highlight the proper functioning of equipment.
NOTE: This term is used to denote items of interest to the user.
<cr>: Carriage Return or ENTER
The information in this document is subject to change without notice. The statements, configurations,
technical data, and recommendations in this document are believed to be accurate and reliable, but are
presented without express or implied warranty. Users must take full responsibility for their
applications of any products specified in this document. The information in this document is
proprietary to Bay Technical Associates, Inc.
In the interest of improving internal design, operational function, and/or reliability, Bay Technical
Associates, Inc reserves the right to make changes to the products described in this document without
notice.
Bay Technical Associates, Inc does not assume any liability that may occur due to the use or
application of the product(s) or circuit layout(s) described herein.
BayTech units are in accordance with the general requirements of Standard for Information
Technology Equipment (ETL listed, conforms to ANSI/UL 60950-1 2
nd
Edition and CAN/CSA C22.2
No. 60950-00. CE conforms to IEC 60950.) Equipment installations are to be in accordance with the
Canadian Electrical Code, Part I, CSA C22.1-02; General Requirements – Canadian Electrical, Part
II, CSA C22.2 No 0-M91; the National Electrical Code, NFPA 70-2005; and the National Electrical
Safety Code, NFPA, IEEE C2-2002.
We welcome any comments you may have about our products, and we hope that you will continue to
look to BayTech for your remote management needs.

Page6
CONNECTIONDESCRIPTION
EIA232SERIALCONNECTION
InternalModemCommunications
ModemLEDDescriptions
ExternalModemCommunications
BayTech's DS71-MD4 host communication modem module provides an interface that controls user
access to the DS Series data switch and other DS Series connected modules. The DS71-MD4 is a system
data controller that directs operations between the base unit, system modules and externally connected
devices.
CAUTION: All power should be removed from the BayTech unit prior to removing or installing
cables and /or adapters.
The MODULE has an RJ-45 port which uses an 8-pin crossed modular cable to connect to a local EIA-
232 device such as a computer terminal or external modem. Most serial computers do not have RJ-45
connections; therefore an adapter is provided with this unit to convert from a DE-9 connector to an RJ-
45 connector (Bay Tech Part No. 9FRJ45PC-4). An adapter to convert from a DB-25 connector to an
RJ-45 connector is also available from Bay Tech, upon request (Bay Tech Part No. 25FRJ45PC-4). The
8-pin crossed modular cable is configured to operate with these adapters. Configure serial
communications parameters for the host terminal to match the DS71-MD4 module. The modules have
factory serial communications parameters of 9600 bps, 8 data bits, 1 stop bit, no parity, XON/XOFF
disabled
A Flash upgradeable 56 Kbps (V.90bis) modem allows standard dial-up telephone lines to be used
between the Data Switch installation and the user's location. Using the RJ04X007 (RJ-11) modular
cable, connect to “LINE” on the DS71-MD4 module to the Telco wall jack. Using communications
software, dial the modem using the ATDT command. NOTE: Test guarantee for POTS line only.
IMPORTANT: The DS71-MD4 modem option has priority over the EIA-232 serial port. If a
serial port user is connected to a DS74 I/O port when a modem is established, the serial port user
will be “booted” off, allowing the remote user to communicate with the DS unit. Whichever port
user is in the configuration mode, will cause the message to be sent to the other port user,
“Configuration Mode in use”. Encryption: The modem will transmit encrypted data but will
encrypt or decrypt the data.
Using the 25MRJ45MD-6 adapter (or other applicable adapter) and the RJ08X007 crossed cable,
connect the COM (or serial) port of the modem to the RJ-45 port labeled EIA-232 on the DS71-MD4
module. Using an RJ04X007 (RJ-11) modular cable, connect the port labeled “LINE” on the modem to
the Telco wall jack. The 25MRJ45MD-6 is not shipped with unit but is available upon request at time of
purchase.
DS71-MD4 front plate comes with five modem activity LEDs. These LEDs are marked as TX, RX,
CD, OH, and CX. These LEDs are described below.
TX (Transmit Data): FLASHES when the modem is transmitting data.
RX (Receive Data): FLASHES when the modem is receiving data.
CD (Carrier Detect): ON when valid data signal (carrier) from remote modem.
OH (Off Hook): ON to indicate the modem is ready to communicate.
CX (Connection): ON indicates the modem has a connection to a DS74 port.

Page7
INSTALLATION
Unpacking
PreparingtheInstallationSite
POWER
Compare the unit and serial number of the equipment you received to the packing slip located on the
outside of the box. Inspect equipment carefully for damage that may have occurred in shipment. If there is
damage to the equipment or if materials are missing, contact BayTech Customer Support at 228-563-7334
or call toll free inside the United States at 800-523-2702. At a minimum, you should receive the
following:
1. The DS Chassis, DS71-MD4 Host Module and DS74 Modules.
2. Manual insert describing the location of the User’s Guide on BayTech’s website at
www.baytech.net.
3. 1 ea. DE-9 (9 pin) PC com port adapter, 9FRJ45PC-1.
4. 1 ea. RJ-45 Roll over cable, RJ08X007 and RJ04X007.
NOTE: Keep the shipping container and packing material in the event future shipment is required.
The installation area should be clean and free of extreme temperatures and humidity. Allow sufficient
space behind the DS unit for cabling and receptacle connections. Access to installation site should be
restricted to authorized personnel. Installation of these units should be limited to ITE and Telco server
environments.
PRÉPARATION DE L'EMPLACEMENT D'INSTALLATION
Le secteur d'installation devrait être propre et exempt des températures et de l'humidité extrêmes.
Permettez le suffisamment d'espace derrière l'unité de DS pour des raccordements de câblage et de
réceptacle. L'accès à l'emplacement d'installation devrait être limité au personnel autorisé. L'installation de
ces unités devrait être limitée à ITE et à environnements de serveur de Telco.
CAUTION: This unit is intended for indoor use only. Do not install near water or expose this unit
to moisture. To prevent heat buildup, do not coil the power cord when in use. Do not use extension
cords. Do not attempt to make any internal changes to the power source. Do not attempt to modify
any portion or component of DS Series Unit unless specifically directed to by BayTech personnel.
BayTech must perform any internal operations.
ATTENTION: Cette unité est prévue pour l'usage d'intérieur seulement. N'installez pas près de
l'eau ou n'exposez pas cette unité à l'humidité. Pour empêcher l'habillage de la chaleur, ne lovez pas
le cordon de secteur en service. N'employez pas les cordes de prolongation. N'essayez pas de
n'apporter aucune modification interne à la source d'énergie. N'essayez pas de ne modifier aucune
partie ou composant d'une unité de série DS à moins qu'ait spécifiquement dirigé vers par le
personnel de BayTech. BayTech doit effectuer toutes les opérations internes.
208V VAC Model: Internal 208 VAC 50/60 Hz, 10 Amps Maximum Load.
120V VAC Model: Internal 120 VAC 50/60 Hz, 15, Amps Maximum Load.

Page8
CABLING
RJ45Cable
Control Module RJ-45 pin Signals
Pin EIA 232 Signal Signal Direction Description
1 DTR Out
Handshake, Line Driver Inactive State = High: +12V when power is
applied. Used as a handshake line to enable/disable the receiving of
characters.
2 GND Signal Ground
3 RTS Out
Handshake, Line Driver Inactive State = High: +12 V when power is
applied. Not used to enable/disable.
4 TX Out Transmit (Data Out)
5 RX In Receive (Data In)
6 DSR In Handshake In. –12V when not used
7 GND
Signal Ground, when Jumper JP6-2 is connected to JP6-3. In order for the
module to take advantage of “DCD Logon/Logoff” and “Auto Connect
Port”, Jumper JP6-2 is connected to JP6-1 providing DCD In.
8 CTS In Used as a handshake line to enable/disable the receiving of characters.
CAUTION: High-voltage surges and spikes can damage this equipment. To protect from such
power surges and spikes, this unit must have a good earth ground or good power surge protection.
ATTENTION: Les montées subites et les transitoires à haute tension peuvent endommager cet
équipement. Pour se protéger contre de telles montées subites et transitoires de puissance, cette unité
doit avoir une bonne protection rectifiée ou bonne de la terre de puissance de montée subite.
CAUTION: For PERMANENTLY CONNECTED EQUIPMENT, a readily accessible disconnect
device (Circuit Breaker rated not to exceed the amperage rating of the unit) shall be incorporated in
the fixed wiring between the power source and the Baytech unit. For PLUGGABLE EQUIPMENT,
the socket-outlet shall be installed near the equipment and easily accessible. The outlets providing
power to the unit shall be protected against over current, short circuit and earth fault by suitable
rated protective devices.
ATTENTION: Pour l'ÉQUIPEMENT DE MANIÈRE PERMANENTE RELIÉ, un dispositif
aisément accessible de débranchement (disjoncteur évalué pour ne pas dépasser l'estimation
d'ampérage de l'unité) sera incorporé dans le câblage fixe entre la source d'énergie et l'unité de
Baytech. Pour l'ÉQUIPEMENT QUE L'ON PEUT BRANCHER, la douille-sortie sera installée près
de l'équipement et facilement accessible. Les sorties fournissant la puissance à l'unité seront
protégées contre le courant, le court-circuit et le défaut de terre finis par les dispositifs protecteurs
évalués appropriés.

Page9
Adapter signals
Listed are the pin specifications for the BayTech cable and adapters and the terminal COM ports:
Serial 1: Port Pin out Table
Signal RS-232
Port (DS) RS-232 Port (RPC) COM Port DE-9 Pin COM Port DB-25 Pin Signal
DTR 1 1 4 20 DSR
GND 2 2 1 GND
RTS 3 3 7 5 CTS
TXD 4 4 3 2 RXD
RXD 5 5 2 3 TXD
DSR 6 N/C 6 6 DTR
GND 7 7 5 7 GND
CTS 8 8 4 RTS
DTR 4 DCD
DCD 8 1 8 DTR
RI 9 22
RJ08X007 Standard Rollover Cable – RJ45 to RJ45
Serial 2: RJ08X007 Pin out
Serial 3: RJ45 Receptacle & Plug

Page10
Adapters
Serial 4: 9FRJ45PC-1 Adapter Pin Out
Serial 5: 9FRJ45PC-4 Adapter Pin out
(Use with RJ08X007 Cable and B/C switch in “B”)
SerialSetup
Connect the 9FRJ45PC-4 adapter to the user’s computer
Connect the MODULE EIA-232 port to the adapter via the RJ08X007 rolled flat ribbon cable.
Use terminal emulation software to access the unit, 9600 bps, 8 data bits, 1stop bit and no
parity, B/C switch set to ‘B’.
NOTE: At any time during the session you need to go to another menu, use the Attention
Character = semi-colon (;). Press the attention character key 5-times to get back to the
main status menu.
NOTE: Depending on the DS-Series model, the menus will vary according to the number of
DS74 modules installed in the unit. If this is not an initial set-up and Password has already
been enabled, you are prompted to login. After logging in successfully, invoke the main
menu by sending the attention character five times (;;;;;).
NOTE: Password feature is case sensitive. (Default is user/password is root/baytech)
NOTE: All screen shots are valid for Firmware F2.21. Not all options are available for all
earlier firmware.

Page11
QUICKSTART:DS71MD4SERIES
Configuration:
1. Connect to the Serial port (EIA232) using the supplied rollover flat cable and adapter.
2. Use terminal emulation software to access the unit, (i.e. Microsoft Hyper-terminal). Set the PC
serial port configuration to the following: 9600 bps, 8 data bits, 1stop bit, no parity, and No
Flow Control.
3. If you get only a blinking cursor Press ‘Enter’. If still only a blinking cursor, Type (5)
Attention Characters, (factory default is the semi-colons {;}). The Attention Character will not
echo on the screen. There is a one second delay before the menu is displayed. You should see
a menu similar to (Figure 1).
4. Select ‘C’ for the configuration menu, (Figure 2).
5. Select ‘1’ for the DS71-MD4 module, (Figure 3).
6. Select the number for ‘Login Setup’ option, (Figure 4).
7. Select the number for ‘Manage Users’ option, (Figure 5).
8. NOTE: The ‘admin’ user can not be deleted.
9. Select ‘A’ to add a user. Type the name.
10. Select the number of the name just added and to enter their password, (Figure 6).
11. Press ‘Enter’ until get to the ‘Login Setup Menu’ (Figure 3).
12. Select ‘Assign User Ports’ and select a user, (Figure 7). Add a port or add all ports.
13. Press ‘Enter’ until get to the ‘Login Setup Menu’ (Figure 3).
14. Repeat steps 7-13 to add additional users and to assign ports.
15. Once finished adding users, Press ‘Enter’ until get to the ‘Login Setup Menu’ (Figure 3).
16. Select ‘Access Control’ to enable User and Password prompt (Figure 8).
17. At this point you have the minimum configuration to begin operations. You may wish to make
other changes to meet your needs. Press ‘Enter’ until you are at the main menu. Type “T” to
end session
18. Connect the Analog telecom phone line to the modem and test the connection. You will see
the same menus as seen in the serial port.
If this is a new unit shipped directly from Baytech, follow the steps. If this is a previously own unit,
perform a factory reset to clear out any users and passwords still in the unit.

Page12
DS71-MD4 Serial/Modem Controller Configuration:
Figure 1: Network Controller
Figure 2: Module Configuration
Figure 3: DS71-MD4 Configuration
Data Switch Series - F.1.04.00
Bay Technical Associates
Unit ID: DS71-MD4
Attention Character: ;
Module 1: admin on Host EIA-232
Device A (3, 1).................1
Device B (3, 2).................2
Device C (3, 3).................3
Device D (3, 4).................4
DS-RPC (5, 1).................5
Configuration ..........................C
I/O Modules Reset .....................RM
Unit Reset ............................RU
Exit ..................................X
Logout ................................T
Enter Request :
Copyright(C) Bay Technical Associates 2006
DS71-MD4 Data Switch Series - V90 Modem Host Module
Revision F.1.06.00
Module 1
Status ................................1
Serial Port Configuration .............2
Port Device Name ......................3
Port Select Code ......................4
Attention Character ...................5
Disconnect Timeguard ..................6
Connect port ID Echo ..................7
Login Setup ...........................8
Local Modem Option ....................9
Unit ID ...............................U
Exit ..................................X,CR
Module Configuration
DS71-MD4 (1).................... 1
DS74 (2).................... 2
DS-RPC (3).................... 3
Exit...................................X,CR
Enter Request :

Page13
Figure 4: Login Setup
Figure 5: Manage User
Figure 6: User Password
Login Setup:
Header .......................1
Access Control ...............2
Menu .........................3
Manage Users .................4
Auto Connect .................5
Dial Back Number .............6
Assign User Ports ............7
Exit ......................X,CR
Enter Request :
User Management Menu:
”admin” .............................. 1
Add New User ..........................A
Delete User ...........................D
Change User ...........................C
To change user password, enter number of user
Enter Request :A
Enter User Name (maximum 10 characters): john
User Management Menu:
"admin" ............................... 1
"john" ................................ 2
Add New User ..........................A
Delete User ...........................D
Change User ...........................C
To change user password, enter number of user
Enter Request :2
Selected user: john
Enter New Password:****
Re-enter New Password:****
Password Changed successfully!

Page14
Figure 7: Assign User Ports
Figure 8: Access Control
Assigned User Ports:
+----+----------* +-M2-+-M3-+
|User| Name \|1234|1234|
+----+------------*----+----+
| 1 | admin |1234|1234|
| 2 | john | | |
+----+------------*----+----+
Enter User number:2
Assigned User Ports:
+----+----------* +-M2-+-M3-+
|User| Name \|1234|1234|
+----+------------*----+----+
| 2 | john |....|....|
+----+------------*----+----+
Add Port(s)............................1
Remove Ports(s)........................2
Add All Ports..........................3
Remove All Ports.......................4
Exit ..................................X,CR
Enter Request :1
Enter Module and Port number in format M:P or M,P (0=All): 2:4
Assigned User Ports:
+----+----------* +-M2-+-M3-+
|User| Name \|1234|1234|
+----+------------*----+----+
| 2 | john |...4|....|
+----+------------*----+----+
Add Port(s)............................1
Remove Ports(s)........................2
Add All Ports..........................3
Remove All Ports.......................4
Exit ..................................X,CR
Login Setup:
Toggle setting by entering number, CR to exit.
Access Control:
Serial Port access:
1)...Prompt for User Name: Disabled
2)...Prompt for Password : Disabled
Modem Port access:
3)...Prompt for User Name: Disabled
4)...Prompt for Password : Disabled
Enter Select :

Page15
DetailOperationsandConfigurations
MAINMENU
Menu 1: Main Manu
Module 2: admin on Host EIA
-
2
32
Device A (2,1).........1
Device B (2,2).........2
Device C (2,3).........3
Device D (2,4).........4
DS-RPC (5,1).........5 DS-RPC Chassis ONLY
Configuration .................C Module setup
I/O Modules Reset ............RM Reset all I/O ports
Unit Reset ...................RU Resets DS-unit. All internal and external
communications are lost
Exit ..........................X Access to additional menu options
Logout ........................T Logout the user
Enter Request :c
NOTE: Depending on the DS-Series model, the menus may vary according to the number of
DS74 modules installed in the unit. If this is not an initial set-up and Password has already been
enabled, you are prompted to login. After logging in successfully, invoke the main menu by
sending the attention character five times (;;;;;).
NOTE: Username/Password feature is case sensitive. Default is ‘admin/(blank)’.
IMPORTANT: The Factory default serial communications parameters are 9600 bps, 8 data
bits, 1 stop bit, and no parity.
With a proper serial port connection, upon power-up or unit reset, the following Status menu
will be displayed. The number of devices displayed is dependent on the number of DS74
modules installed.
NOTE: Only the Administrator user will see the configuration option.
NOTE: If select the “Configure” option and get the following message
(
Configuration mode in use ), the other port has the configuration option selected.
IMPORTANT: Any changes made in the Configuration menu will take effect
NOTE: Only the Admin user will see the Configuration, Unit Reset, and I/O Module Reset
options. All users will see only the ports assigned to them, alone with ‘Exit’ and ‘Logout’.

Page16
CONFIGURATIONMENU:
Menu 2: Module Configuration
DS71MD4CONFIGURATIONMENU:
Menu 3: DS71-MD4 Configuration
Status
Copyright(C) Bay Technical Associates 2006
DS71-MD4 Data Switch Series - V90 Modem Host Module
Revision F.1.01.01
Module 2
Status .........................1 Current status of DS71-MD4 module
Serial Port Configuration.......2 Change port config, 9600, 8, 1, none
Port Device Name................3 Change the name of the device
Port Select Code................4 Non-Menu, ASCII code to select DS74 port
Attention Character.............5 (;;;;;) get Main Menu
Disconnect Timeguard............6 Delay to see if more data after ‘;’ char
Connect port ID Echo ...........7 Enable echo module & port#, device name
Login Setup ....................8 Mange user, Port, Header
Local Modem Option .............9 MD4 options
Unit ID ........................U Name the module
Exit ........................X,CR Return to previous menu
I
nstalled Modules :2,3,5
Port Select Code ......................$BT
Attention Character ...................;
Disconnect Time Guard .................Disabled
Port ID Echo ..........................Disabled
Unit ID ...............................DS71-MD4
Local Modem Option:
Rings to Auto-Answer................... 2
Modem Connectivity Timeout.............60 minutes
Modem Inactivity Timeout...............60 minutes
Current Country Code is................B5
Login Setup:
Header Text ...........................Enabled
Menu Mode .............................Enabled
Auto Connect Module & Port
+----+------------+------+----------+
|User| Name | M: P | Auto |
+----+------------+------+----------+
| 1 | admin | 1: 1 | Disabled |
+----+------------+------+----------+
Select 1), displays the current
configuration of the module.
Module
C
onfiguration
DS71-MD4 (2)..........1 Host Module
DS74 (3)..........2 I/O EIA232 ports
DS-RPC (5)..........3 DS-RPC Chassis ONLY
Exit......................X, CR
E
nter Request :
1s
t
level of configuration identifies all
modules connected to the DS-chassis. The
DS74 has the (4) serial ports, May have more
than one DS74 listed. DS-RPC are chassis
with (4) power outlets.

Page17
Status
continued. Assigned User Ports:
+----+----------* +-M3-+-M4-+-M5-+
|User| Name \|1234|1234|1234|
+----+------------*----+----+----+
| 1 | admin |1234|1234|1234|
+----+------------*----+----+----+
User Dialback Phone number
+----+-----------+-----------------+----------+
|User| Name | Phone number | Dialback |
+----+-----------+-----------------+----------+
| 1 | admin | | Disabled |
+----+-----------+-----------------+----------+
Dialback Delay.........................10 seconds
Access Control:
Serial Port access:
1)...Prompt for User Name: Disabled
2)...Prompt for Password : Disabled
Modem Port access:
3)...Prompt for User Name: Disabled
4)...Prompt for Password : Disabled
Auto Connect Module & Port
+----+------------+------+----------+
|User| Name | M: P | Auto |
+----+------------+------+----------+
| 1 | admin | 1: 1 | Disabled |
+----+------------+------+----------+
+----+----------------+-------+------+------+------+----+----+----+----+
|Port| Port | Baud | Word | Stop |Parity|Xon/ Xoff|LineDrive|
| | Name | Rate | Size | Bits | |Xmit|Recv|DTR |RTS |
+----+----------------+-------+------+------+------+----+----+----+----+
| 1 |Host EIA-232 | 9600 | 8 | 1 | None | Off| Off|High|High|
| 2 |Host V90 Modem | 115.2k| 8 | 1 | None | Off| Off|High|High|
+----+----------------+-------+------+------+------+----+----+----+----+

Page18
SerialPortConfiguration
Menu 4: Serial Port Configuration
Exit/Save
SetBaudRate
" 300 " ......1
" 600 " ......2
" 1200 " ......3
" 2400 " ......4
" 4800 " ......5
" 9600 " ......6
"19200 " ......7
"38400 " ......8
"57600 " ......9
"115.2k" ......A
Enter Select :
Select 2), from the Serial Port Configuration Menu changes the transfer rate of
Data bits per second for the serial port, Default is 9600
Select 2), from the Network Configuration Menu configures Handshaking, Baud Rate, Word Size,
Stop Bits, and Parity through either the serial or modem ports using the menus. RTS and DTR Line
Drivers can only be configured through the phone line via a modem Xon/Xoff, RTS and DTR Line
Drivers can only be configured through the phone line via a modem. The default settings are
9600bps, 8 data bits, no parity, one stop bit, Xon/Xoff Off and RTS/DTR High.
IMPORTANT: Communications with the terminal computer connected to the port will be lost
until the serial port configuration of the terminal computer matches the unit’s serial port.
+----+----------------+-------+
-
-----
+
-
-----
+
-
-----
+
-
---
+
-
---
+
----+----+
|Port| Port | Baud | Word | Stop |Parity|Xon/ Xoff|LineDrive|
| | Name | Rate | Size | Bits | |Xmit|Recv|DTR |RTS |
+----+----------------+-------+------+------+------+----+----+----+----+
| 1 |Host EIA-232 | 9600 | 8 | 1 | None | Off| Off|High|High|
| 2 |Host V90 Modem | 115.2k| 8 | 1 | None | Off| Off|High|High|
+----+----------------+-------+------+------+------+----+----+----+----+
Exit/Save......1 Set Parity........5
Set Baud Rate..2 Set Xon/Xoff......6
Set Word Size..3 RTS Line Driver...7
Set Stop Bits..4 DTR Line Driver...8
Enter Request :
Change Host Device to Match NEW Configuration
Before Answering this Request
Accept Changed ? (Y/N)
:
Change is aborted !
Select 1), from the Serial Port Configuration Menu
to exit without saving or to save changes If changes
were made the unit reminds you to change the PC
serial port to the same configuration. If you take more
than 20-seconds to make the PC changes, the module
will abort the chan
g
es.
NOTE: Open two sessions. 1
s
t
session connect to the module and second session with the new
configurations but do not connect. Make changes to the module in 1
st
session and select-1 to save, when
you see above comments, click on 2
nd
session and type ‘Y’. The 2
nd
session should connect to the
module. If you type anything other than ‘Y’ the module will Abort changes.

Page19
WordSize
StopBits
Parity
" None " ......1
" Even " ......2
" Odd " ......3
Enter Select :
Select 5), from the Serial Port Configuration Menu selects the Parity,
Default is None
" 1 " ......1
" 2 " ......2
Enter Select :
" 5 " ......1
" 6 " ......2
" 7 " ......3
" 8 " ......4
Enter Select :
Select 3), from the Serial Port Configuration Menu changes the Word
Size, Default is 8
Select 4), from the Serial Port Configuration Menu changes the Stop Bits,
Default is 1
The word size is the measurement of the actual data bits in a transmission. Which setting you choose
depends on what information you are transferring. For example, standard ASCII has values from 0 to
127 (7 bits). Extended ASCII uses 0 to 255 (8 bits). If the data being transferred is simple text
(standard ASCII), sending 7 bits of data per packet is sufficient for communication. A packet refers
to a single byte transfer, including start/stop bits, data bits, and parity.
The Stop Bits are used to signal the end of communication for a single packet. Since the data is
clocked across the lines and each device has its own clock, it is possible for the two devices to
become slightly out of sync. Therefore, the stop bits not only indicate the end of transmission but
also give the computers some room for error in the clock speeds. The more bits that are used for stop
bits, the greater the lenience in synchronizing the different clocks, but the slower the data
transmission rate.
Parity is a simple form of error checking used in serial communication. For even and odd parity, the
serial port will set the parity bit (the last bit after the data bits) to a value to ensure that the
transmission has an even or odd number of logic high bits. For example, if the data was 011, then for
even parity, the parity bit would be 0 to keep the number of logic high bits even. If the parity was odd,
then the parity bit would be 1, resulting in 3 logic high bits. This allows the receiving device to know
the state of a bit so as to enable the device to determine if noise is corrupting the data or if the
transmitting and receiving devices' clocks are out of sync.
With no parity selected, it's assumed that there are other forms of checking that will detect any errors
in transmission. No parity also usually means that the parity bit can be used for data, speeding up
transmission. In modem-to-modem communication, the type of parity is coordinated by the sending
and receiving modems before the transmission takes place.

Page20
XON/XOFF
RTS/DTRLineDriverInactivityState
PortDeviceName
PortSelectCode
DTR Line Driver Inactive State is: High
High ? (Y/N, CR for no change):
RTS Line Driver Inactive State is: High
High ? (Y/N, CR for no change):
Select 8), from the Serial Port Configuration Menu
changes the DTR driver state, Default is “High”
Select 7), from the Serial Port Configuration Menu
changes the RTS driver state, Default is “High”
Type “Y” for YES or “N” for NO and press ‘Enter’.
RTS (Request to Send)/ DTR (Data Terminal Ready) is normally used in conjunction with an external
modem. With no modem the RTS and DTS default state is High.
Module 1 Device Name :DS71-MD4
+----+----------------+-------+------+------+------+----+----+----+----+
|Port| Port | Baud | Word | Stop |Parity|Xon/ Xoff|LineDrive|
| | Name | Rate | Size | Bits | |Xmit|Recv|DTR |RTS |
+----+----------------+-------+------+------+------+----+----+----+----+
| 1 |Host EIA-232 | 9600 | 8 | 1 | None | Off| Off|High|High|
| 2 |Host V90 Modem | 115.2k| 8 | 1 | None | Off| Off|High|High|
+----+----------------+-------+------+------+------+----+----+----+----+
Enter Host Device Number (1-2) :
Select 3, from the Configuration Menu allows the serial or modem port to be renamed.
Type the port number and press ‘Enter’.
For a simple communication between modems three connected lines are needed: TX, Rx, and Ground.
For the data to be transmitted, both sides have to be clocking the data at the same baud rate. While this
method is sufficient for most applications, it is limited in being able to respond to problems such as
the receiver getting overloaded. This is where serial handshaking can help. XON/XOFF is software
data flow communications protocol for controlling the flow of data between Baytech and other
devices. Baytech units will send an XOFF character when it can't take any more data and when it can
once again take more data, will send an XON character to the transmitter.
Select “Xon/Xoff” the DS displays the following, Default is Off:
Output Flow Control (Xmit) - Xon/Xoff is ( Off )
Stop/Restart Output Upon Receiving of Xoff/Xon ? (Y/N) :
Input Flow Control (Recv) - Xon/Xoff is ( Off )
Xoff/Xon sent based on Buffer - Full/Empty condition ? (Y/N) :
Enter New Port Name (Max. 16 characters):
or press ENTER for no change ................:
Type the new name for the port, (Max 16 Characters)
and press ‘Enter’.
The Port Select Code is an ASCII character string sent by the host terminal to
the module to select an I/O port on a DS74 peripheral module. Select 4, from
the Configuration Menu changes the Port Code. The code is programmable up
to 8 characters. Factory default is $BT.
Port Select Code :$BT
Change It ? (Y/N) :