NTI SERIMUX-S-x User manual

MAN107 Rev 2/27/14
SERIMUX-S-x
SECURE SSH CONSOLE SERIAL SWITCH
Installation and Operation Manual
SERIMUX®Series

i
TRADEMARK
SERIMUX is a registered trademark of Network Technologies Inc in the U.S. and other countries.
COPYRIGHT
Copyright © 2009, 2014 by Network Technologies Inc. All rights reserved. No part of this publication may be reproduced, stored
in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise,
without the prior written consent of Network Technologies Inc, 1275 Danner Drive, Aurora, Ohio 44202.
This product contains software licensed under the GNU Public License version 2 and other open source licenses.
(http://www.gnu.org/copyleft/gpl.html )
You may obtain the complete open-source code free of charge from Network Technologies Inc (send email to tech-
[email protected]) for more information.
CHANGES
The material in this guide is for information only and is subject to change without notice. Network Technologies Inc reserves the
right to make changes in the product design without reservation and without notification to its users.
FIRMWARE VERSION
Current Firmware Version 1.40
CE Statement
We, Network Technologies Inc, declare under our sole responsibility that the SERIMUX-S-4/8/16/24/32 are in conformity with
European Standard EN55022.
Typographic Conventions
The table below offers examples of text format and the meaning when that format is used when the font varies from the standard
font (Helvetica) used in this manual.
Typeface meaning Font Configuration Example
On-screen computer output Courier New-(not bold) C:>
What you type on the computer Courier New-bold C:>edit text.bat
Characters to be typed as
instructed within the body of a
paragraph
Courier New-bold
Surrounded by < > <L>
Place holder-description of
other data to enter Helvetica-Italic Hostname

ii
TABLE OF CONTENTS
Introduction....................................................................................................................................................................1
Serial Interface Specifications.....................................................................................................................................1
Network Interface ........................................................................................................................................................1
RJ45 Sensor Ports ......................................................................................................................................................1
Protocols......................................................................................................................................................................2
Supported Web Browsers ...........................................................................................................................................2
Definitions....................................................................................................................................................................2
Materials......................................................................................................................................................................3
Default User Name and Password...............................................................................................................................4
Features and Functions................................................................................................................................................5
Installation......................................................................................................................................................................6
To Mount to a Rack.....................................................................................................................................................6
Cable Connections......................................................................................................................................................7
Connect to the Ethernet ..............................................................................................................................................7
Dual Power Option ......................................................................................................................................................8
DC Power Option.........................................................................................................................................................8
Connect Sensors.........................................................................................................................................................9
Initial Startup ...............................................................................................................................................................10
Connect Direct to Serial Port from Command Line ................................................................................................13
Connect Via Telnet..............................................................................................................................................13
Connect Via SSH.................................................................................................................................................13
Using the SERIMUX Console Switch.........................................................................................................................14
Serial Control- Administrator.....................................................................................................................................14
Login as the administrator.........................................................................................................................................15
Port Management......................................................................................................................................................16
Common Settings................................................................................................................................................17
Port Settings ...........................................................................................................................................................17
Serial Settings.........................................................................................................................................................18
Port Logging............................................................................................................................................................19
Modem Setting........................................................................................................................................................20
Authentication.........................................................................................................................................................20
Event Notification....................................................................................................................................................21
Port Access List......................................................................................................................................................22
Port Disconnect.......................................................................................................................................................23
Apply Common Settings.........................................................................................................................................24
Device Management .................................................................................................................................................25
Add a Contact Sensor.............................................................................................................................................25
Remove a Sensor...................................................................................................................................................26
Configure a Sensor.................................................................................................................................................26
Sensor Settings...................................................................................................................................................27
Alert Settings.......................................................................................................................................................28
Data Logging.......................................................................................................................................................29

iii
Sensor Access List..............................................................................................................................................29
Sensor Authentication .........................................................................................................................................30
Network Management...............................................................................................................................................31
IP Configuration......................................................................................................................................................31
Server Configuration...............................................................................................................................................33
SNMP..................................................................................................................................................................35
TCP Setting.............................................................................................................................................................35
Administration Settings..............................................................................................................................................36
Unit Settings............................................................................................................................................................36
Unit Setting->Change Admin Password..............................................................................................................36
Unit Settings->Date Time Settings......................................................................................................................37
Security Settings.....................................................................................................................................................39
Syslog .....................................................................................................................................................................40
Firmware Update ....................................................................................................................................................42
User Management.....................................................................................................................................................44
System Users..........................................................................................................................................................44
Access Group .........................................................................................................................................................45
Administrative Info.....................................................................................................................................................46
System Log.............................................................................................................................................................46
System Information.................................................................................................................................................47
Network Information................................................................................................................................................47
Port List...................................................................................................................................................................48
Reboot.......................................................................................................................................................................48
Serial control-Users....................................................................................................................................................49
User Initial Selection Menu........................................................................................................................................49
Device Discovery Tool................................................................................................................................................51
Web Interface...............................................................................................................................................................52
Enter the Password ................................................................................................................................................52
Menu Overview..........................................................................................................................................................53
Main Menu and Port List ...........................................................................................................................................54
Connect to a Port....................................................................................................................................................54
Port Management......................................................................................................................................................57
Port Configuration...................................................................................................................................................57
Port Configuration->Port Settings .......................................................................................................................57
Port Configuration->Serial Settings.....................................................................................................................58
Port Configuration->Port Logging........................................................................................................................58
Port Configuration->View Port Log......................................................................................................................59
Port Configuration->Modem Settings..................................................................................................................59
Port Configuration->Authentication.....................................................................................................................59
Port Configuration->Event Notification................................................................................................................60
Port Configuration->Port Access List..................................................................................................................60
Port Configuration->Apply Common Settings .....................................................................................................60
Port Configuration->Disconnect Port...................................................................................................................61
Common Port Configuration Page..........................................................................................................................61
Copy Paste Port......................................................................................................................................................62
Base TCP Port.....................................................................................................................................................62

iv
Sensor Management.................................................................................................................................................63
Internal Sensors......................................................................................................................................................63
External Sensors.....................................................................................................................................................63
RS485 Sensors ...................................................................................................................................................63
RS485 Sensor Management...............................................................................................................................63
Sensor Summary....................................................................................................................................................63
Adding a Sensor .....................................................................................................................................................65
Configure a Sensor.................................................................................................................................................66
Sensor Settings...................................................................................................................................................67
Sensor Alert Settings...........................................................................................................................................67
Sensor Log Settings............................................................................................................................................68
Sensor Authentication .........................................................................................................................................68
Sensor Access List..............................................................................................................................................68
Network Management...............................................................................................................................................69
IP Configuration......................................................................................................................................................69
Server Configuration...............................................................................................................................................70
SNMP..................................................................................................................................................................71
TCP Settings...........................................................................................................................................................71
Administrative Settings..............................................................................................................................................72
Unit Settings............................................................................................................................................................72
Unit Settings->Admin Password..........................................................................................................................72
Unit Settings->Date and Time Settings...............................................................................................................73
Security Settings.....................................................................................................................................................74
Syslog .....................................................................................................................................................................75
Firmware Update ....................................................................................................................................................76
User Management.....................................................................................................................................................77
System Users..........................................................................................................................................................77
Access Groups........................................................................................................................................................79
Administrative Information.........................................................................................................................................80
System Log.............................................................................................................................................................80
System Information.................................................................................................................................................80
Network Information................................................................................................................................................81
Support......................................................................................................................................................................81
Reboot.......................................................................................................................................................................82
Logout........................................................................................................................................................................82
Telnet Or SSH Connection .........................................................................................................................................83
Telnet via HyperTerminal........................................................................................................................................83
Telnet via Command Prompt..................................................................................................................................83
RESET Button..............................................................................................................................................................84
Change Console Port Baud Rate...............................................................................................................................84
Interconnection Cable Wiring Method ......................................................................................................................85
Troubleshooting..........................................................................................................................................................85
Specifications..............................................................................................................................................................90
Index.............................................................................................................................................................................91
Warranty Information..................................................................................................................................................92

v
TABLE OF FIGURES
Figure 1- Secure rack mount ears to switch.......................................................................................................................................6
Figure 2- Secure switch to a rack ......................................................................................................................................................6
Figure 3- Connect terminals and devices to SERIMUX Console Switch............................................................................................7
Figure 4- Connect the LAN to the SERIMUX.....................................................................................................................................7
Figure 5- Power connections for SERIMUX with Dual Power option .................................................................................................8
Figure 6- Power connections for SERIMUX with DC power option....................................................................................................8
Figure 7- Connect sensors to the SERIMUX .....................................................................................................................................9
Figure 8- SERIMUX Secure configuration menu via serial connection............................................................................................10
Figure 9- Submenu for Port Connect or Sensor Monitoring.............................................................................................................11
Figure 10- Port Connection menu....................................................................................................................................................11
Figure 11- Sensor Monitoring ..........................................................................................................................................................12
Figure 12- Serimux Secure Configuration menu..............................................................................................................................15
Figure 13- Port Management- complete ports list............................................................................................................................16
Figure 14- Port Management selections for Port 1 ..........................................................................................................................16
Figure 15- Port Management- configure common settings for most ports .......................................................................................17
Figure 16- Port Management- port settings for Port 1......................................................................................................................17
Figure 17- Port Management-serial settings for Port 1 ....................................................................................................................18
Figure 18- Port Management-port logging for Port 1 .......................................................................................................................19
Figure 19- Port Management-modem setting for Port 1...................................................................................................................20
Figure 20- Port Management-authentication for Port 1....................................................................................................................20
Figure 21- Authentication server configuration ................................................................................................................................21
Figure 22- Port Management- event notification for Port 1 ..............................................................................................................21
Figure 23- Port Management-port access list for Port 1...................................................................................................................22
Figure 24- Port Management-add users to access list.....................................................................................................................22
Figure 25- Port Management-add group to access list ....................................................................................................................22
Figure 26- Port Management- remove group from access list .........................................................................................................23
Figure 27- Port Management- disconnect Port 1.............................................................................................................................23
Figure 28- Port Management- apply common settings to Port 1......................................................................................................24
Figure 29- Device Management menu.............................................................................................................................................25
Figure 30- Adding a sensor..............................................................................................................................................................25
Figure 31- Remove a Sensor...........................................................................................................................................................26
Figure 32- Sensor configuration topics ............................................................................................................................................26
Figure 33- Sensor settings for temperature sensor..........................................................................................................................27
Figure 34- Sensor settings for water sensor....................................................................................................................................27
Figure 35- Sensor alert settings.......................................................................................................................................................28
Figure 36- Sensor Data Logging......................................................................................................................................................29
Figure 37- Sensor Access List.........................................................................................................................................................29
Figure 38- Sensor user authentication.............................................................................................................................................30
Figure 39-Network Management menu............................................................................................................................................31
Figure 40- Network Management-IP Configuration..........................................................................................................................31
Figure 41- Network Management-IPv4 settings...............................................................................................................................31
Figure 42- Network Management- IPv6 settings..............................................................................................................................32
Figure 43- Network Management-IPv6 manual IP assignment........................................................................................................32
Figure 44-Network Management- Server Configuration...................................................................................................................33
Figure 45- Network Management- Web Server settings..................................................................................................................33

vi
Figure 46- Network Management- SMTP server settings................................................................................................................33
Figure 47- Network Management- NFS server configuration...........................................................................................................34
Figure 48- Network Management-SNMP configuration....................................................................................................................34
Figure 49- Network Management-TCP settings...............................................................................................................................35
Figure 50- Administration Settings...................................................................................................................................................36
Figure 51- Administration Settings-Unit Settings .............................................................................................................................36
Figure 52-Unit Settings-change password.......................................................................................................................................37
Figure 53- Unit Settings-manual date and time................................................................................................................................37
Figure 54-Unit Settings-NTP Server settings...................................................................................................................................38
Figure 55- Unit Settings-Daylight Savings .......................................................................................................................................38
Figure 56- Administration Settings-Security Setting.........................................................................................................................39
Figure 57- Administration Settings-CLI Authentication Types..........................................................................................................39
Figure 58- Administration Settings-Security-CLI Authentication ......................................................................................................40
Figure 59- Administrative Settings-Syslog.......................................................................................................................................40
Figure 60- Administration Settings-System Log settings..................................................................................................................41
Figure 61- Administration Settings-Syslog-ng Configuration............................................................................................................41
Figure 62- Administration Settings-Firmware Update ......................................................................................................................42
Figure 63- Change path from tftp source to flash drive....................................................................................................................42
Figure 64- Firmware update- confirm to perform update..................................................................................................................43
Figure 65- Firmware update- Completed.........................................................................................................................................43
Figure 66- User Management menu................................................................................................................................................44
Figure 67- User Management- System Users..................................................................................................................................44
Figure 68- User Management-Configure User.................................................................................................................................44
Figure 69- User Management-Access Groups.................................................................................................................................45
Figure 70- User Management- Group User List...............................................................................................................................45
Figure 71- Administrative Info menu................................................................................................................................................46
Figure 72- Administrative Info-System Log......................................................................................................................................46
Figure 73- Administrative Info-System Information..........................................................................................................................47
Figure 74- Administrative Info-Network Information.........................................................................................................................47
Figure 75- Administrative Info-Port List............................................................................................................................................48
Figure 76- Reboot the SERIMUX from the shell ..............................................................................................................................48
Figure 77- Initial menu for users......................................................................................................................................................49
Figure 78- A user with limited host port access ...............................................................................................................................49
Figure 79- Sensor list with current readings.....................................................................................................................................50
Figure 80- Device Discovered..........................................................................................................................................................51
Figure 81- Web interface Login page..............................................................................................................................................52
Figure 82- Connect Port/Port List Page...........................................................................................................................................54
Figure 83- SSH Port connection via Java Applet.............................................................................................................................55
Figure 84- SSH Port connected.......................................................................................................................................................55
Figure 85- Serial connection-"offline"-properly exited......................................................................................................................56
Figure 86- Port Configuration page..................................................................................................................................................57
Figure 87- Port Settings...................................................................................................................................................................57
Figure 88- Serial Settings ................................................................................................................................................................58
Figure 89- Port Logging settings......................................................................................................................................................58
Figure 90- View or Clear Port Log ...................................................................................................................................................59
Figure 91- Modem settings..............................................................................................................................................................59
Figure 92- Authentication method options .......................................................................................................................................59
Figure 93- Port event notifications ...................................................................................................................................................60
Figure 94- Port Access List..............................................................................................................................................................60
Figure 95- Apply common settings to port .......................................................................................................................................60

vii
Figure 96- Disconnect Port button ...................................................................................................................................................61
Figure 97- Common Port Configuration page..................................................................................................................................61
Figure 98- Copy Paste Port page ....................................................................................................................................................62
Figure 99- Sensor Summary page...................................................................................................................................................63
Figure 100- Sensor status details ....................................................................................................................................................64
Figure 101- Sensor Configuration page...........................................................................................................................................64
Figure 102-Add a sensor .................................................................................................................................................................65
Figure 103- Wiring method for contact sensor.................................................................................................................................65
Figure 104- Common Sensor Configuration page ...........................................................................................................................66
Figure 105- IP Configuration page...................................................................................................................................................69
Figure 106- Server Configuration Page ...........................................................................................................................................70
Figure 107- NFS Configuration settings...........................................................................................................................................71
Figure 108- TCP Settings page .......................................................................................................................................................71
Figure 109- Unit Settings page........................................................................................................................................................72
Figure 110- Change password for user "root"..................................................................................................................................72
Figure 111- Unit Settings page, date and time.................................................................................................................................73
Figure 112- Security Settings page..................................................................................................................................................74
Figure 113- Syslog page..................................................................................................................................................................75
Figure 114- Firmware Update page.................................................................................................................................................76
Figure 115- Firmware Update- file selected.....................................................................................................................................76
Figure 116- Firmware update done..................................................................................................................................................76
Figure 117- Firmware update failure................................................................................................................................................77
Figure 118- System User page........................................................................................................................................................77
Figure 119- User configuration ........................................................................................................................................................78
Figure 120- Access Groups page ....................................................................................................................................................79
Figure 121- Edit user names listed in Access Group.......................................................................................................................79
Figure 122- System Log displayed ..................................................................................................................................................80
Figure 123- System Information page..............................................................................................................................................80
Figure 124- Network Information page.............................................................................................................................................81
Figure 125- Support Links................................................................................................................................................................81
Figure 126- Reboot page.................................................................................................................................................................82
Figure 127- Logout screen...............................................................................................................................................................82
Figure 128- Telnet connection via HyperTerminal ...........................................................................................................................83
Figure 129- Location of RESET button............................................................................................................................................84
Figure 130- View looking into RJ45 female......................................................................................................................................85
APPENDICES
Appendix A - SERIMUX Port Characteristics...................................................................................................................................86
Appendix B-SERIMUX User and Administrator Characteristics.......................................................................................................86
Appendix C- Cable Adapters ...........................................................................................................................................................87
Appendix D- Common Commands from Shell Command Line........................................................................................................89
Appendix E- SERIMUX-S-x Default Paths.......................................................................................................................................89
Appendix F- SERIMUX-S-x Default Network Settings .....................................................................................................................89

NTI SERIMUX SERIES SSH CONSOLE SWITCH
1
INTRODUCTION
The NTI SERIMUX-S-x SSH Console Serial Switch (SERIMUX) is a serial port switch that delivers secure management of up to
32 serial devices via the internet, TCP/IP network, or dial-up modem connections. It combines the advanced security of Secure
Shell v2 with unlimited access to remote network management. The SERIMUX-S-x allows links (or connections) between multiple
pairs of RS232 asynchronous serial ports. The SERIMUX-S-x (x=4,8,16,24,or 32) is available with up to 32 serial port
connections.
The main purpose of the switch is to provide secure management of several serial devices from local or remote locations (using
Ethernet or external modems). Devices include routers, DSU's, servers, switches or any other equipment allowing serial
operation using RS232 interface. Users can work locally using a VT100 or ANSI serial console, a CPU with a terminal program
(i.e. HyperTerminal)) or from remote locations via Ethernet connection (Web Interface, SSH, Telnet).
Each SERIMUX port has to be configured for serial communication (baud rate, parity, etc) within the specifications of the attached
serial device, but the configurations of the two devices linked by the SERIMUX do not need to match. Various parameters
(communication speed, hardware and/or software flow control, timeout, etc) can be selected for each SERIMUX port. Devices
may be either locally connected or connected through attached modems.
Each SERIMUX port can be configured as either a host or user port. Serial hosts (such as servers, switches etc.) are connected to
host ports, while serial user devices (such as a terminal or serial console) are connected to user ports. Up to five (5) concurrent
connections can be made to the same host port.
The SERIMUX supports two operator levels: user and administrator. Users may login and connect to serial devices attached at
host ports. The administrator and users with administrative privileges can see and/or modify various port or user parameters in
addition to connecting to serial devices attached at host ports.
Option:
•Dual AC Power Option- includes a second power connector for a secondary AC power supply cable- to order, add a
“DP” to the part number (i.e. SERIMUX-S-xDP)
•DC Power Option- SERIMUX designed for connection of 36-72VDC (48VDC nominal) for use in a Telecom
environment- to order add “-48V” to the part number (i.e. SERIMUX-S-x-48V)
•Dual DC Power Option- includes a second terminal block power connection for a secondary 48VDC power supply- to
order add a “-48VDP” to the part number (i.e. SERIMUX-S-x-48VDP)
Serial Interface Specifications
•Serial ports: 4,8,16,24 or 32 RJ45 RS232 serial port connections
•Console port: 1-RJ45 RS232 console port connector
•Data: asynchronous, 5, 6, 7, or 8 bits per character
•Parity: even, odd, or none
•Stop Bits: 1 or 2 bits
•Flow Control: Xon/Xoff, RTS/CTS, Both, or None
•Baud Rate: 50 bps to 115200 bps between ports
•Two connecting ports can be at different baud rates
Network Interface
•Two 10/100 Base-T Ethernet ports with RJ45 Ethernet connector
•Supports both static and dynamic IP addresses
RJ45 Sensor Ports
•Two RJ45 modular jacks for connecting NTI temperature, humidity, temperature/humidity, and liquid detection sensors.

NTI SERIMUX SERIES SSH CONSOLE SWITCH
2
Protocols
•SSH V2, Telnet ,IPMI
•IPV4, IPV6
•TCP/IP, TFTP, DHCP, ICMP, UDP, ARP
•HTTP, HTTPS, SMTP, SNMP V1/V2c, Syslog, SMTP
•IPMI v2, RMCP
•Alerts are sent using email, and/or SNMP traps when any monitored environmental condition exceeds a user-specified
range or a serial port is connected or disconnected.
Supported Web Browsers
Most modern web browsers should be supported. The following browsers have been tested:
•Microsoft Internet Explorer 6.0 or higher
•Netscape 7.0 or higher
•Mozilla FireFox 0.9.2 or higher
•Opera 9.0 or higher
•Google Chrome 3.0 or higher
Set your browser to always check if there is a newer version of the page than the version stored in cache. This action will ensure
that it will display the most up-to-date information.
Definitions
device equipment that can transmit and/or receive data using RS232 interface
host serial device that performs a function or stores data to be controlled by a user
inactivity when a port is not receiving data from the device connected to it
terminal program a terminal emulation program- computer program that communicates via RS232 interface
(i.e. HyperTerminal)
"dumb" terminal serial terminal device or CPU terminal program that emulates a serial terminal
timeout time period of inactivity after which a port will be disconnected (the inter-port connection will be broken)
baud rate serial device or port receiver and transmitter speed; measured in "bps" (bits per second)
flow control a method to temporarily stop and restart serial data transfer (flow). It can be
-Hardware (out-band)- usually using the RTS and CTS physical handshaking signals;
-Software (in-band)- using special characters, usually named Xon and Xoff, inserted
in data being transferred;
-Both

NTI SERIMUX SERIES SSH CONSOLE SWITCH
3
Materials
Materials Supplied with this kit:
SERIMUX-S-x
IEC Power cord 5 Foot RJ45-to-
(country specific) RJ45 Cat5
(x2 with Dual AC Patch Cable
power option)
Manual CD
Quick Start Guide and Administrator’s
Note
4-#10-32 X ¾” Pan Head Screws
4-#10-32 Cage Nuts
(6 feet of 22AWG 2-wire
cable provided for
models with DC
power connectors)
Rubber Feet
Rack mount ears kit
RJ45MF-RS232-CO
Serial Crossover Adapter
DB9F-RJ45F Serial Adapter
DB25M-RJ45F-C Modem Adapter
DB25F-RJ45F Console Adapter
DB25M-RJ45F-T Console Adapter
Materials Required but not supplied:
Serial cable with at least one RJ45 male end for connection to the Console Switch from each device to be connected. See
Interconnection Cable Wiring Method on page 85 for cable pinout.

NTI SERIMUX SERIES SSH CONSOLE SWITCH
4
DEFAULT USER NAME AND PASSWORD
The default user name is root (lower case letters only).
The default password is nti (lower case letters only).

NTI SERIMUX SERIES SSH CONSOLE SWITCH
5
FEATURES AND FUNCTIONS
1. STATUS LEDs- LEDs will illuminate to indicate the SERIMUX is ON, activity on connected ports, or if there are alerts
2. PWR1- IEC Connector- for connection of AC power cord
3. PWR2- IEC Connector- for connection of second AC power cord for redundant power source (models with Dual AC Power
option only)
4. Power Switch- for turning the SERIMUX ON or OFF
5. Port connectors- RJ45 female serial connectors- for connecting serial cables from serial devices or user terminals
6. USB Devices- USB Type A female connector- for connecting USB flash drive for various data storage options
7. Reset button- For power cycling the SERIMUX firmware without powering down the SERIMUX
8. Console Port- RJ45 female serial connector- for connecting serial cable from a terminal console
9. Ethernet 1- RJ45 female connector- for connection of CAT5 cable to Local Area Network (LAN) for WEB interface
10. Ethernet 2- RJ45 female connector- for redundant connection of CAT5 cable to Local Area Network (LAN) for WEB
interface
11. RJ45 Sensors- RJ45 female connector- for connection of CAT5 cables to optional sensors
P
W
R
1
P
W
R
2
PWR 2
PWR 1
2A,250V2A,250V 12345678
910111213141516
Front and Rear Views of SERIMUX-S-16DP
2358
SERIMUX SECURE
NTI R
Network Technologies Inc
R
1
469
RESET
CONSOLE
NTI NETWORK
TECHNOLOGIES
INCORPORATED
Tel:[phone]
Fax:[phone]
1275 Danner Dr
Aurora, OH 44202
www.networktechinc.com
R
ETHERNET 2ETHERNET 1
RJ45 SENSORS
11
234567810
9 10111213141516Pwr
Ext
Alert
Int
Alert
AC INPUT
100-240VAC
15W
710

NTI SERIMUX SERIES SSH CONSOLE SWITCH
6
INSTALLATION
This NTI switch was designed to be mounted to a rack or to set on a desktop. It includes rack mount ears to make attachment to
a rack easy, and rubber feet to be applied to the bottom of the case if it will instead sit on a flat surface. If this will sit on a flat
surface, simply apply the rubber feet to the bottom of the case in each of the 4 corners.
To Mount to a Rack
1. Attach the ears to the switch using the #6-32x3/16" flat Phillips-head screws (6) provided as shown in the illustration below.
The holes in the ears should line up with pre-threaded holes in the sides of the NTI switch. Tighten the screws securely.
Figure 1- Secure rack mount ears to switch
2. Install 4 cage nuts (supplied) to the rack in locations that line up with the holes in the mounting ear on the NTI switch.
3. Secure the NTI switch to the rack using four #10-32X3/4” screws (supplied). Each screw should be of sufficient length
to go completely through the NTI mounting ear, rack frame and fully engage all threads in the cage nut. Be sure to
tighten all mounting screws securely.
4. Attach all cables securely to the switch and where necessary supply adequate means of strain relief for cables.
Figure 2- Secure switch to a rack
6-32x3/16"
Flat Head
Screws
(supplied)
Rack mount ear
NTI Switch
Front of Switch
NTI Switch
Rack Screws
#10-32x3/4"
(supplied)
Rack
(supplied)
Cage Nuts

NTI SERIMUX SERIES SSH CONSOLE SWITCH
7
Cable Connections
1. Connect a serial console to the port labeled "CONSOLE" on the SERIMUX using a serial cable with an RJ45 male connector
(Cat5 patch cable supplied). This will be the default administrator device. (Figure 3)
2. Connect each additional serial user device or host device to be connected by the SERIMUX to any remaining port (1-
4/8/16/24/32) using a serial cable with an RJ45 male connector (see cable specification on page 85). It may be necessary to
add one of the cable adapters (supplied) detailed in Appendix C (page 87) between the device port on the serial user device
or host device and the RJ45 connector. An NTI RJ45MF-RS232-CO serial crossover adapter has been provided for
connection of one DCE type device. More adapters can be purchased separately.
Note: There are two types of serial devices, data communication equipment (DCE)(i.e. modem) and data terminal
equipment (DTE) (i.e. CPU), each having different connector pin assignments. The cable adapters (see Appendix C on
page 87) make the proper connections.
3. Follow the "Initial Startup" instructions on page 10.
Figure 3- Connect terminals and devices to SERIMUX Console Switch
Connect to the Ethernet
If the Ethernet connection is made, the Web Interface (page 52) can be used. Up to two Ethernet connections to a Local Area
Network (LAN) can be made using Cat5 cable with RJ45 connectors attached. Wiring between connectors should be straight
through (pin 1 to pin 1, pin 2 to pin 2, etc.). Connect a Cat5 cable between the connector labeled "ETHERNET 1" and the LAN
(see Figure 4). For a redundant connection, attach a second Cat5 cable between the connector labeled “ETHERNET 2” and the
LAN.
Figure 4- Connect the LAN to the SERIMUX
RJ45 male
connector
RJ45 male
connector
LAN #1
Rear View of SERIMUX-S-16DP
P
W
R
1
P
W
R
2
PWR 2PWR 1
2A,250V2A,250V 123
4
567
8
91011
12
131415
16
RESET
CONSOLE
NTI NETWORK
TECHNOLOGIES
INCORPORATED
Tel:[phone]
Fax:[phone]
1275 Danner Dr
Aurora, OH 44202
www.networktechinc.com
R
ETHERNET 2ETHERNET 1
RJ45 SENSORS
AC INPUT
100-240VAC
15W
VGA
Multi-Scan
Monitor
User
with SSH
v2
VGA
Multi-Scan
Monitor
User
with SSH
v2
LAN #2
Internet Internet
SERVER
ROUTER
FIREWALL
RJ45
Male
Connector
Ethernet cable PBX
Rear View of SERIMUX-S-16DP
USER DEVICE
(VT100, ANSI serial console,
PC w/ Terminal Emulation
Program)
RJ45 Male Connector
P
W
R
1
P
W
R
2
PWR 2PWR 1
2A,250V2A,250V 123
4
567
8
910111213141516
RESET
CONSOLE
NTI NETWORK
TECHNOLOGIES
INCORPORATED
Tel:[phone]
Fax:[phone]
1275 Danner Dr
Aurora, OH 44202
www.networktechinc.com
R
ETHERNET 2ETHERNET 1
RJ45 SENSORS
AC INPUT
100-240VAC
15W
RJ45MF-RS232-CO
SERIAL CROSSOVER ADAPTER
(FOR CONNECTION OF DCE
TYPE DEVICE TO SERIMUX)
(Qty 1- supplied)

NTI SERIMUX SERIES SSH CONSOLE SWITCH
8
Dual Power Option
The SERIMUX-S-xDP has two IEC connectors on the rear, for connection to two separate power sources. If the power source
connected to “PWR 1” fails, the SERIMUX will automatically and without interruption switch over to the power source connected to
“PWR 2”.
Note: If only one power source is used, it should be connected to “PWR 1”.
Figure 5- Power connections for SERIMUX with Dual Power option
DC Power Option
The SERIMUX-S-x-48V has connections on the rear for a user-supplied 48VDC power supply. This is typically used when the
SERIMUX is installed in a Telecom environment. The SERIMUX-S-x-48V will accept a DC power source between 36~72VDC
(48VDC nominal), positive or negative polarity. A removable 3-pole screw terminal is provided for easy connection. The image
below shows a SERIMUX-S-32-48V, but is also available with dual 48VDC power connections for a dual power supply option
(model SERIMUX-S-32-48VDP).
Figure 6- Power connections for SERIMUX with DC power option
+
48VDC
Power
Supply
+
Chassis ground
Loosen screws to remove
terminal block
123
4RESET
567
8
171819
20
2122
23
24
CONSOLE ETHERNET
RJ45 SENSORS
91011
12
131415
16
252627
28
2930
31
32 2
1
+
36-72VDC, 2A NTI
Tel:[phone]
Fax:[phone]
1275 Danner Dr
Aurora, OH 44202
www.networktechinc.com
R
Rear View of SERIMUX-S-32-48V
UPS
1 UPS 2
PWR 1 PWR 2
Uninterruptible Power Supplies
Rear View of SERIMUX-S-16DP
P
W
R
1
P
W
R
2
PWR 2
PWR 1
2A,250V2A,250V 12345678
910111213141516
RESET
CONSOLE
NTI NETWORK
TECHNOLOGIES
INCORPORATED
Tel:[phone]
Fax:[phone]
1275 Danner Dr
Aurora, OH 44202
www.networktechinc.com
R
ETHERNET 2ETHERNET 1
RJ45 SENSORS
AC INPUT
100-240VAC
15W
To Circuit #2
To Circuit #1

NTI SERIMUX SERIES SSH CONSOLE SWITCH
9
Connect Sensors
The SERIMUX-S-x has two RJ45 connectors for attachment of up to two sensors to monitor environmental conditions. Sensors
can be connected to measure temperature (ENVIROMUX-STS), humidity (ENVIROMUX-SHS), temperature and humidity
(ENVIROMUX-STHS), temperature and wide range humidity (ENVIROMUX-STHS-99). A sensor can also be connected to
detect liquids (ENVIROMUX-LDSx-y). All sensors are sold separately.
Figure 7- Connect sensors to the SERIMUX
ENVIROMUX-STS
RJ45-male
connector
Temperature
Sensor
RJ45-male
connector
P
W
R
1
P
W
R
2
PWR 2PWR 1
2A,250V2A,250V 12345678
91011
12
131415
16
RESET
CONSOLE
NTI NETWORK
TECHNOLOGIES
INCORPORATED
Tel:[phone]
Fax:[phone]
1275 Danner Dr
Aurora, OH 44202
www.networktechinc.com
R
ETHERNET 2ETHERNET 1
RJ45 SENSORS
AC INPUT
100-240VAC
15W
RJ45-male
connector Cat5 cable
(up to 1000 ft)
ENVIROMUX-LDSx-y
Liquid Detection
Sensor
Rear View of SERIMUX-S-16DP
2-wire cable (up to 100 ft (y))
water sensor
cable (up to 1000 ft (x))
Cat5 cable
(up to 1000 ft)
RJ45-male
connector

NTI SERIMUX SERIES SSH CONSOLE SWITCH
10
INITIAL STARTUP
The following instruction will enable the user to quickly make port connections using a terminal connected to the
“CONSOLE” port. For instruction to make quick connection using the Ethernet port and Web Interface, see page 52.
1. Make sure the SERIMUX is turned OFF.
2. Using the serial console device connected to the port labeled "CONSOLE", start the terminal program (e.g. Windows
HyperTerminal) and configure it as follows:
•direct connection (using the appropriate CPU local serial Com port)
•115200 bps
•8 bits
•no parity
•1 stop bit
•no flow control
•ANSI or VT100 terminal mode.
3. Power ON the SERIMUX. Wait for the SERIMUX login prompt.
4. At “login as: “ type <root>(all lowercase letters) and press <Enter>.
5. At “password” type <nti>(all lowercase letters) and press <Enter>.
Note: If the administrator password has been changed and is not known, contact NTI for instruction on resetting the
SERIMUX to defaults.
6. A shell prompt will be displayed “-sh-2.05b# “ . From this point you can either access the SERIMUX configuration menu,
or access a submenu for either making a port connection or viewing the status of connected sensors.
A. To access the configuration menu:
Type <serimuxconfig> to open Serimux Secure Configuration Menu. (See Figure 8) Use menu structure
to configure SERIMUX.
Figure 8- SERIMUX Secure configuration menu via serial connection

NTI SERIMUX SERIES SSH CONSOLE SWITCH
11
B. To make a connection with a host:
Type <portmenu> to open a submenu listing the “Port Connect Menu” and the “Sensor Monitor Men”.
Figure 9- Submenu for Port Connect or Sensor Monitoring
Enter <1> +<Enter> to proceed to the port connection menu.
Figure 10- Port Connection menu
Then type a port number and press <Enter> to make a connection with a host. (See Figure 10)
Enter <x> to return to the previous menu.
Note: To connect to a host, the host must first be configured with the same communication settings as the port (default
serial settings = 9600 baud, 8 bits, no parity, 1 stop bit, no flow control). If needed, see “Serial Settings” on page 18 to
change the SERIMUX port serial settings.

NTI SERIMUX SERIES SSH CONSOLE SWITCH
12
C. To view sensor status:
Type <portmenu> to open a submenu listing the “Port Connect Menu” and the “Sensor Monitor Men” (see Figure 9).
Enter <2> +<Enter> to proceed to the Sensor List.
Figure 11- Sensor Monitoring
From the Sensor Monitor menu you will view a list of all sensors monitored by the SERIMUX. From here you will be able to view
the current value being reported by the sensor and its alert status. If a sensor is reporting an alert, you can either press <a> to
acknowledge the alert, or <d> to dismiss the alert.
If the sensor is in alert status, the user has the option to either acknowledge the alert or dismiss it. If the user acknowledges
the alert, no additional alert messages will be sent during that alert status cycle. If the user dismisses the alert, another alert
message will be sent once the “notify again after” time designated on the configuration page elapses.