WTI AFS-16-1 Installation instructions

WTI Part No. 14554
Rev. A
AFS-16-1
RJ45 Fallback Switch
Hardware Guide

i
Warnings and Cautions:
Installation Instructions
Secure Racking
If Secure Racked units are installed in a closed or multi-unit rack assembly, they may
require further evaluation by Certification Agencies. The following items must be
considered.
1. The ambient within the rack may be greater than room ambient. Installation
should be such that the amount of air flow required for safe operation is not
compromised. The maximum temperature for the equipment in this environment is
60°C. Consideration should be given to the maximum rated ambient.
2. Installation should be such that a hazardous stability condition is not achieved due
to uneven loading.
Input Supply
Check nameplate ratings to assure there is no overloading of supply circuits that could
have an effect on overcurrent protection and supply wiring.
Grounding
Reliable earthing of this equipment must be maintained. Particular attention should
be given to supply connections when connecting to power strips, rather than direct
connections to the branch circuit.
No Serviceable Parts Inside; Authorized Service Personnel Only
Do not attempt to repair or service this device yourself. Internal components must be
serviced by authorized personnel only.
• Shock Hazard - Do Not Enter
• Lithium Battery
CAUTION: Danger of explosion if battery is incorrectly replaced. Replace
only with same or equivalent type recommended by the manufacturer.
Discard used batteries according to the manufacturer's instructions.
Disconnect Power
If any of the following events are noted, immediately disconnect the unit from the outlet
and contact qualified service personnel:
1. If the power cord becomes frayed or damaged.
2. If liquid has been spilled into the device or if the device has been exposed to rain
or water.

ii
Warnings and Cautions
Two Power Supply Cables
Note that some AFS series units feature two separate power inlets and a separate power
supply cable for each power inlet. Make certain to disconnect all power supply cables
from their power source before attempting to service or remove the unit.
Disconnect Power Before Servicing
Before attempting to service or remove this unit, please make certain to disconnect the
power supply cable from the power source.

iii
Agency Approvals
FCC Part 15 Regulation
This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated
in a commercial environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instruction
manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the
user will be required to correct the interference at his own expense.
This device complies with part 15 of the FCC Rules. Operation is subject to the following
two conditions: (1) This device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause undesired
operation
WARNING: Changes or modifications to this unit not expressly approved by
the party responsible for compliance could void the user’s authority to operate
the equipment
EMC and Safety Directive Compliance
The CE mark is affixed to this product to confirm compliance with the following
European Community Directives:
• Council Directive 2014/30/EU of 26 February 2014 on the approximation of the
laws of Member States relating to electromagnetic compatibility;
and
• Council Directive 2014/35/EC of 26 February 2014 on the harmonization of
the laws of Member States relating to electrical equipment designed for use
within certain voltage limits.
Industry Canada - EMI Information
This Class A digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.

iv
Table of Contents
1. Introduction .............................................................1-1
2. Unit Description..........................................................2-1
2.1. The Dual Power Supply Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.2. The Control Module ....................................................2-2
2.3. The Circuit Module .....................................................2-4
3. Getting Started ..........................................................3-1
3.1. Apply Power to the AFS .................................................3-1
3.2. Connect Your PC to the AFS .............................................3-1
3.3. Communicating with the AFS.............................................3-2
3.4. Fallback Switching .....................................................3-3
3.4.1. Fallback Switching - Text Interface ..................................3-3
3.4.2. Fallback Switching - Web Browser Interface ..........................3-4
4. Hardware Installation .....................................................4-1
4.1. Connecting the Power Supply Cable(s).....................................4-1
4.2. Connecting the Network Cable ...........................................4-1
4.3. Connecting a Local Control Device ........................................4-2
4.4. Connecting an External Modem (Optional) ..................................4-2
4.5. Module Set Up ........................................................4-3
4.5.1. Circuit Module Set Up ............................................4-3
4.5.2. Control Module SetUp............................................4-4
4.5.2.1. Monitor Input Signal - Trigger When Low .....................4-5
4.5.2.2. Monitor Input Signal - Trigger When High .....................4-5
4.6. The A/C/B Connectors ..................................................4-6
Appendices:
A. Interface Description....................................................Apx-1
A.1. Serial Port (RS232)...................................................Apx-1
B. Specifications .........................................................Apx-2
C. Customer Service ......................................................Apx-3

1-1
1. Introduction
The AFS-16-1 is a versatile switching system, designed for applications that require
routing of analog or digital signals between a common RJ45 jack and “A” and “B RJ45
jacks. The AFS is ideal for switching RS232, RS422/485, Ethernet/UTP or telephone
lines.
The system consists of a Card Rack, one Power Supply Module, one Control Module,
and up to 16 Circuit Modules. Each Circuit Module is capable of switching all 8 pins of
the Common RJ45 jack between Jack “A” or Jack “B”. Each card can be switched by
alarm, manually, or by command.
The AFS includes an assortment of alarm features, which allow the unit to monitor
temperature, power interruptions, and invalid access attempts and then notify you
via Email, text message, Syslog message or SNMP trap when critical conditions are
detected. The AFS can also monitor device response to ping commands and then
switch A/B paths and provide notification when devices fail to respond.
Note: For instructions regarding configuration and operation of the AFS Series
Device, please refer to the AFS Firmware Guide

2-1
2. Unit Description
The AFS consists of a frame unit, one Dual Power Supply Module, one Control Module,
and up to sixteen Circuit Modules.
2.1. The Dual Power Supply Module
The Dual Power Supply Module, shown in Figure 2.1, provides AC power used by the
Control Module and Circuit Module(s). The AFS will always include one Dual Power
Supply Module. Note that the Power Supply Module is not designed to be removed
from the AFS Rack Assembly.
The Power Supply Module faceplate includes the following:
Power Switch and ON Indicator
Power Inlets: (Not Shown) Two (2) IEC320-C14 AC inlets (located on the back
panel of the Dual Power Supply Module) which are used to connect the AFS to an
appropriate power source.
Power Supply Indicators: Two LEDs (located on the back panel of the Dual Power
Supply Module), which will light when connected to an active power source. Note
that there is one LED for Inlet "A" and one LED for Inlet "B".
ON
I
O
POWER MODULE
AFS-16
1
Figure 2.1: The Power Supply Module

2-2
Unit Description
2.2. The Control Module
The Control Module, shown in Figure 2.2, coordinates switching of the individual
Circuit Modules. The Control Module includes a Master A/B Gang Switch, status LEDs,
a 10/100Base-T Ethernet connector and an RJ-45 RS232 Serial Port for connection
to your PC, control device or external modem. An AUX jack is provided to allow
connection to a monitored line and optional external alarm. The AFS always includes
one Control Module.
AC
LK
ETHERNET
10/100
A
ALARM
RST
B
CONTROL
RS232
1
2
3
4
5
6
7
Figure 2.2: The Control Module
The AFS Control Module includes the following components:
Ethernet Port: An RJ45 Ethernet port for connection to your TCP/IP network. Note
that the AFS features a default IP address (192.168.168.168). This allows you to
establish an SSH connection with the unit without first assigning an IP address.
Note that the Network Port also includes two, small LED indicators for Link and Data
Activity.
Master A/B Gang Switch: Allows manual control of A/B switching at up to sixteen
Circuit Modules. Note that the Master A/B Gang Switch can be disabled as
described in Section 4.5.
ALM Indicator: The ALM Indicator will light when Monitor Input Alarm is triggered.

2-3
Unit Description
Reset Switch: To reinitialize the AFS, hold the Reset Switch in the "down"
position for approximately five seconds. When the AFS is reset, all users will be
disconnected from the AFS and the operating system will be reloaded.
RS232 Connector: An RJ-45 Serial Port for connection to your PC, control device,
or external modem. Please refer to Appendix A for a description of the RS232
interface.
AUX Connector: (Not Shown) A five terminal quick connector, located on the back
edge of the Control Module board. The AUX Connector can be used in conjunction
with the Monitor/Alarm Input feature to generate an alarm when the status of pin 4
changes. In addition, pins 1 through 3 on the AUX Connector can also be used to
switch a connected device On or Off in response to signal changes at Pin 4.
Notes:
• The Monitor Input signal (Pin 4) is always measured relative to the signal at
the common ground (Pin 5).
• A "Low" signal should be between Zero (0) Volts and -48 Volts and a "High"
signal should be between +5 Volts and +48 Volts.
Release Pin: A snap-lock pin that is used to secure the Control Module to the
AFS frame.
Monitor Input Level Jumper: (Not Shown) A jumper located on the Control
Module board, which is used to configure the AUX Connector for use with the
Monitor/Alarm Input feature. The Monitor Input Level Jumper selects the non-active
state for the Monitor/Alarm Input feature. When the jumper is set in the "1" position
(normally high,) the Monitor/Alarm Input feature can generate an alarm when the
Monitor Input signal goes low. When the jumper is set in the "0" position (normally
low,) the Monitor/Alarm Input feature can generate an alarm when the Monitor Input
signal goes high.

2-4
Unit Description
2.3. The Circuit Module
The AFS can accept up to sixteen Circuit Modules. Each Circuit Module includes a
common jack, jacks for “A” and “B” paths, and a Manual A/B switch as described in
Figure 2.3.
A
A
C
B
B
RJ45-3
1
2
3
4
5
Figure 2.3: The Circuit Module
The AFS Circuit Module includes the following components:
A/B Switch: Each A/B Switch can be manually switched, or activated by
commands sent to the Control Module. The A/B Switch can also be operated by
the Control Module’s Master A/B Switch.
“A” Connector: An RJ45 Port, used for connection to your primary line.
“C” Connector: An RJ45 Port, used for connection to a common line.
“B” Connector: An RJ45 Port, used for connection to your fallback line.
Release Pin: Used to secure the Circuit Module to the AFS frame.
A/B Switch Jumper: (Not Shown) A jumper, located on the Circuit Module board,
which is used to enable/disable the individual Circuit Module’s response to the
Master A/B Gang Switch as described in Section 4.5.2.

3-1
3. Getting Started
This section describes a simplified installation procedure for the AFS hardware, which
will allow you to communicate with the unit in order to demonstrate basic features and
check for proper operation.
Note that this Quick Start procedure does not provide a detailed description of unit
configuration, or discuss advanced operating features in detail. For more information,
please refer to the remainder of this User’s Guide.
3.1. Apply Power to the AFS
Refer to the safety precautions listed at the beginning of this User's Guide, and then
connect the unit to a 100 to 240 VAC power source.
Note: The AFS includes two power inlets. You can connect either one or both
of these inputs to your power source. If both power inlets are connected, they
should be connected to separate power sources in order that the second power
source can serve as a redundant back up in the event of failure.
Connect the power supply cable(s) to the unit’s power inlet(s) and then connect the
cable(s) to appropriate power supplies.
Set the Power Switch on the AFS Power Module to the ON Position. The ON LED on the
Power Module and the A/B indicators on the Control Module should light. After about
90 seconds, the A/B indicators should go out, indicating that the unit is ready to receive
commands.
3.2. Connect Your PC to the AFS
The AFS can either be controlled by a local PC Serial Port, controlled via modem,
or controlled via TCP/IP network. In order to select parameters or control switching
functions, commands are issued to the AFS via either the Ethernet Port or RS232
Console Port.
• Ethernet Port: Connect your 10Base-T or 100Base-T network interface to the
AFS Control Module's 10/100Base-T Network Port.
• RS232 Port: Use the supplied Ethernet cable and adapter to connect your PC
COM port to the RS232 Console Port on the AFS Control Module as described
in Section 4.3. For a description of the RS232 Port Interface, please refer to
Appendix A.1.
• Modem: If desired, an external modem can also be installed at the RS232 Port.
For more information, please refer to Section 4.4.

3-2
Getting Started
3.3. Communicating with the AFS
When properly installed and configured, the AFS will allow command mode access
via Telnet, Web Browser, SSH client, modem, or local PC. However, in order to ensure
security, both Telnet and Web Browser access are disabled in the default state.
Notes:
• Default AFS serial port parameters are set as follows: 9600 bps, RTS/
CTS Handshaking, 8 Data Bits, One Stop Bit, No Parity. Although these
parameters can be easily redefined, for this Quick Start procedure, it is
recommended to configure your communications program to accept the
default parameters.
• The AFS features a default IP Address (192.168.168.168) and a default
Subnet Mask (255.255.255.0.) This allows network access to command
mode, providing that you are contacting the AFS from a node on the same
subnet. When attempting to access the AFS from a node that is not on the
same subnet, please refer to AFS Firmware Guide for further configuration
instructions.
1. Access Command Mode: The AFS includes two separate user interfaces; the Text
Interface and the Web Browser Interface. The Text Interface is available via Local
PC, SSH Client, Telnet, or Modem. The Web Browser interface is only available via
TCP/IP network.
a) Via Local PC: Start your communications program and then
press [Enter].
b) Via SSH Client: Start your SSH client, enter the default IP address
(192.168.168.168) for the AFS and then invoke the connect command.
c) Via Web Browser: Make certain that Web Browser access is enabled. Start
your JavaScript enabled Web Browser, enter the default AFS IP address
(192.169.168.168) in the Web Browser address bar, and then press [Enter].
d) Via Telnet: Make certain that Telnet access is enabled. Start your Telnet client,
and enter the AFS's default IP address (192.168.168.168).
e) Via Modem: Use your communications program to dial the number for the
external modem (optional) that you have connected to the AFS’s RS232 port.
For more information on connecting a modem to the AFS, please refer to
Section 4.4.

3-3
Getting Started
2. Username / Password Prompt: A message will be displayed, which prompts you
to enter your username (Login) and password. If a valid username and password
are entered, the AFS will display either the Circuit Control Screen (Web Browser
Interface) or the Circuit Status Screen (Text Interface.)
Notes:
• The default Username is "super".
• The default Password is "super"
• If a Login Banner has been defined, then a banner page will appear before
the command interface is displayed. The Login Banner can be used to
display legal warnings or other information.
3. Review Help Menu: If you are communicating with the AFS via the text interface
(SSH, Telnet or Modem), type /H and press [Enter] to display the Help Menu,
which lists all available AFS commands. Note that the Help Menu is not available
via the Web Browser Interface.
3.4. Fallback Switching
A/B fallback switching can be controlled via the Text Interface or Web Browser Interface.
3.4.1. Fallback Switching - Text Interface
Access the AFS Text Interface and then proceed as follows:
1. Review the Help Menu: At the Text Interface command prompt, type /H and press
[Enter] to display the Help Menu, which provides a basic listing of all available
AFS commands.
2. Manual A/B Switching: Use the manual circuit switches to change A/B paths.
Note that this example assumes that the Master A/B Gang Switch and individual
circuit module switches have not been disabled.
a) Master A/B Gang Switch: Toggle the Master A/B Gang Switch between the
“A” and “B” positions. The LED indicators should follow the Master Switch,
indicating that each circuit has switched the “A” and “B” paths.
b) Circuit Module A/B Switch: Choose an individual Circuit Module and toggle
the module’s A/B Switch between “A” and “B”. The LED indicators should
indicate that the module has switched the A/B path.
3. Code Activated Switching: To control A/B fallback switching using ASCII
commands, invoke the following commands at the AFS command prompt:
a) Type /T *,B and press [Enter]. All Circuit Modules should switch to the
“B” path.
b) Type /T 1,A and press [Enter]. Circuit Module number 1 should switch to the
“A” path.
c) Type /T 2,3,4,A and press [Enter]. Circuit Modules 2, 3, and 4 should
switch to the “A” path.

3-4
Getting Started
3.4.2. Fallback Switching - Web Browser Interface
In the default state, the Web Browser Interface will not be available until you have
enabled Web Access. After Web Access has been enabled, access the AFS Web
Browser Interface and then proceed as follows:
1. Access the Circuit Control Menu: Click on the "Circuit Control" link on the left
hand side of the screen to display the Circuit Control menu. The Circuit Control
menu includes a series of dropdown menus that are used to select the desired
switching action for each Circuit Module.
Note: The Circuit Control menu also lists the number and user-defined name
of each Circuit Module present, the name of the currently selected A/B circuit
path, the A/B position of the switch, a brief description of the reason for the last
switching action and a column that shows if each circuit is controlled by the
Monitor/Alarm Input feature.
2. Select the Switching Action: Use the dropdown menu to select an A/B switching
operation for the desired Circuit Module. For example, to switch Circuit 1 to the B
position, click on the down arrow in the "Action" column for Circuit 1 to display the
dropdown menu, select the "B" option from the dropdown menu and then click on
the "Confirm Circuit Actions" button.
Notes:
• The dropdown menu for each circuit allows you to select position A, position
B or the default position. Normally, the "Default" option will switch the circuit
to the user-defined Default position. However, in the case of this Quick Start
procedure, the Default circuit positions have not yet been defined.
• The Circuit Control Menu also includes the ability to switch all AFS Circuit
Modules. If desired, the dropdown menu in the "All Circuits" row can be
used to switch all AFS circuits.
3. Confirm Switching Actions: After you click on the "Confirm Circuit Actions" button,
the AFS will display a screen which summarizes the selected switching operation(s)
and asks for confirmation before executing the command. To proceed with the
selected switching operation, click on the "Execute Circuit Actions" button.
4. The AFS will execute the switching operation and then display the Circuit Status
screen.
This completes the Quick Start procedure for the AFS. Prior to placing the unit into
operation, it is recommended to refer to the remainder of this user’s guide for important
information regarding advanced configuration options and more detailed operation
instructions. If you have further questions regarding the AFS unit, please contact WTI
Customer Support as described in Appendix C.

4-1
4. Hardware Installation
4.1. Connecting the Power Supply Cable(s)
Refer to the cautions listed below and at the beginning of this User's Guide, and then
connect the AFS to an appropriate 100 to 240 VAC power supply.
CAUTIONS:
• Before attempting to install this unit, please review the warnings and
cautions listed at the front of this user’s guide.
• This device should only be operated with the type of power source
indicated on the instrument nameplate. If you are not sure of the type of
power service available, please contact your local power company.
• Reliable earthing (grounding) of this unit must be maintained. Particular
attention should be given to supply connections when connecting to
power strips, rather than directly to the branch circuit.
Note: The AFS includes two power inlets. You can connect either one or both
of these inputs to your power source. If both power inlets are connected, they
should be connected to separate power sources in order that the second power
source can serve as a redundant back up in the event of failure.
Set the Power Switch on the AFS Power Module to the ON Position. The ON LED on the
Power Module and the A/B indicators on the Control Module should light. After about
90 seconds, the A/B indicators should go out, indicating that the unit is ready to receive
commands. Note that if the AFS needs to download SSH keys, it may take longer than
90 seconds for the A/B indicators to switch off.
4.2. Connecting the Network Cable
Use the supplied 10/100Base-T Ethernet cable to connect the AFS Ethernet port to your
TCP/IP network. Note that the AFS includes a default IP address (192.168.168.168) and
a default subnet mask (255.255.255.0.) When installing the AFS in a working network
environment, it is recommended to define network parameters as described in AFS
Firmware Guide.

4-2
Hardware Installation
4.3. Connecting a Local Control Device
Use the supplied Ethernet cable and adapter to connect your PC COM port to the
RS232 Console Port on the AFS Control Module as shown in Figure 4.1 and Figure 4.2.
4.4. Connecting an External Modem (Optional)
Access the AFS Command Mode and then use the Port Parameters menu to configure
the RS232 Port for Modem Mode. Use an appropriate cable to connect your external
modem to the RS232 Port on the AFS's Control Module and then connect your RJ11
phone line to the external modem.
RJ-45 DB-9F
Pin No. Pin No. Signal
1
2
3
4
5 X
6
7
8
8
1
2
5
3
4
7
CTS
DCD
RXD
TXD
GND
DTR
RTS
Pin 8 Pin 1
Pin 1
Female
Figure 4.1: DX9F-DTE-RJ Snap Adapter Interface
AFS-16
RJ-45 DCE
Serial Port
Straight
RJ-45 Cable
DB-9M DTE
Console Port
DX9F-DTE-RJ
Snap Adapter
PC, Laptop
or Other
Device with
DB-9M DTE
Interface
Figure 4.2: Connecting DB-9M DTE Devices to the AFS Control Module's Serial Port

4-3
Hardware Installation
4.5. Module Set Up
4.5.1. Circuit Module Set Up
The A/B Switch Jumper on the Circuit Module card (Figure 4.3) enables/disables the
individual Circuit Module’s A/B Switch. If you wish to disable manual A/B switching
control at a specific Module, then the A/B Switch Jumper on that Module must be set in
the "Disable" position.
E D
Enable
Disable
Figure 4.3: Circuit Module Jumper

4-4
Hardware Installation
4.5.2. Control Module SetUp
The Control Module includes a jumper that can be used to configure the AUX Connector
for use with the Monitor/Alarm Input feature. If you intend to use the Input Monitor
Alarm, then this jumper should be set as described in the following paragraphs
1 0
High Low
Figure 4.4: Control Module Jumper
1 0
Control Card
Jumper
Back Edge of
Control Card
AUX Connector
Pin Out
Pin Signal
5 Ground
4 Monitor Input
Figure 4.5: Control Module AUX Connector - Monitor Input and Ground

4-5
Hardware Installation
When the Monitor/Alarm Input feature is properly configured, the AFS can trigger an
alarm and/or perform A/B switching operations when the signal at Pin 4 (Monitor Input)
on the Control Module AUX connector goes high or low. In set up this feature, you must
first use the Control Card Jumper to select the non-active (non-alarm) state, and then
use the Monitor/Alarm Input configuration menu to select the active/alarm state (the
signal level that will trigger an alarm) as described in the Sections that follow.
Notes:
• The Monitor Input signal (Pin 4) is always measured relative to the signal at
the common ground (Pin 5).
• A "Low" signal should be between Zero (0) Volts and -48 Volts and a "High"
signal should be between +5 Volts and +48 Volts.
4.5.2.1. Monitor Input Signal - Trigger When Low
To set up the Monitor/Alarm Input feature to trigger an alarm when the signal at AUX
connector pin 4 (the Monitor Input) goes Low, configure the AFS as follows:
1. Control Card Jumper Setting: Set the Jumper to the "1" position (default.) This
will set the non-active, non-alarm signal state to "High".
2. Monitor/Alarm Input Level: Use the Monitor/Alarm Input configuration menu to set
the Monitor Alarm Input Level to "Low". This will configure the Monitor/Alarm Input
feature to generate an alarm when the Monitor Input signal goes Low.
3. Set the Remaining Parameters: Use the Monitor/Alarm Input configuration menu
to select the remaining parameters.
4. Connect Monitor Input: Connect the signal line that you wish to monitor to Pin 4
(Monitor Input) on the Control Module AUX Connector as shown in Figure 4.5.
4.5.2.2. Monitor Input Signal - Trigger When High
To set up the Monitor/Alarm Input feature to trigger an alarm when the signal at AUX
Connector pin 4 (the Monitor Input) goes High, configure the AFS as follows:
1. Control Card Jumper Setting: Set the Jumper to the "0" position. This will set the
non-active, non-alarm signal state to "Low" as shown in Figure 4.4.
2. Monitor/Alarm Input Level: Use the Monitor/Alarm Input configuration menu to set
the Monitor Alarm Input Level to "High". This will configure the Monitor/Alarm Input
feature to generate an alarm when the Monitor Input signal goes High.
3. Set the Remaining Parameters: Use the Monitor/Alarm Input configuration menu
to select the remaining parameters.
4. Connect Monitor Input: Connect the signal line that you wish to monitor to Pin 4
(Monitor Input) on the Control Module AUX Connector as shown in Figure 4.5.
Connect your ground line to the Ground Connector (Pin 5).

4-6
Hardware Installation
4.6. The A/C/B Connectors
Each AFS Circuit Module includes three RJ45 connectors: a "C" (Common) connector,
an "A" (Primary Fallback) connector and a "B" (Secondary Fallback) connector. Use an
RJ45 Ethernet cable to connect devices to the A/C/B ports as required.