WTI NPS-115 User manual

WTI Part No.: 12927
Rev. D
NPS Series
Network Power Switch
Models NPS-115 & NPS-230
(Firmware Version 2.04 and Higher)
User's Guide
5 Sterling ·Irvine ·California 92618
[phone] ·Toll Free: 1-800-854-7226
Fax: [phone] ·http://www.wti.com

Table of Contents
1. Introduction ..............................................1
2. Unit Description............................................2
2.1. Front Panel............................................2
2.2. Back Panel ............................................3
3. Installation ...............................................4
3.1. Option Switches.........................................4
3.2. Console Port Connection....................................4
3.3. Connecting an External Modem................................5
3.4. Connecting the Network Cable ................................5
3.5. Power Supply Connection ...................................5
3.6. Connection to Switched Outlets................................5
3.7. Reset Unit to Defaults .....................................5
3.7.1. Default Parameters Option ..............................6
3.7.2. Default Button (Local) ................................6
4. Start-Up / Configuration ......................................7
4.1. System Mode and User Mode .................................7
4.2. Communicating with the NPS .................................8
4.3. NPS Command/Menu Conventions .............................10
4.4. Defining General Parameters ................................10
4.5. Plug Parameters ........................................12
4.6. Network Parameters......................................13
4.6.1. Implementing IP Security..............................14
4.7. Save Configuration Parameters ...............................15
5. Operation ...............................................16
5.1. Access the NPS Command Mode ..............................16
5.2. Displaying Plug Status ....................................17
5.3. Boot/On/Off Commands ...................................18
5.3.1. Applying Commands to Several Plugs ......................19
5.4. The Default Command ....................................19
5.5. Other Commands .......................................20
5.5.1. Login as Different User ...............................20
5.5.2. Reset Network Port .................................20
5.5.3. Exit / Disconnect...................................20
5.6. Operating Tips .........................................20
6. Saving and Restoring Configuration Parameters .......................21
6.1. Sending Parameters to a File.................................21
6.2. Restoring Saved Parameters .................................22
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Appendices
A. Interface Descriptions .....................................Apx-1
A.1. Console Port Interface ..................................Apx-1
A.2. Modem Port Interface ..................................Apx-1
B. Specifications ..........................................Apx-2
C. Customer Service ........................................Apx-3
Index .................................................Index-1
List of Figures
1. Front Panel ..............................................2
2. Back Panel (Model NPS-115 Shown) ...............................3
3. System Help Screen .........................................9
4. User Help Screen ..........................................9
5. General Parameters Menu (System Mode Only)........................11
6. Plug Parameters Menu (Plug 1 Shown) .............................12
7. Network Parameters Menu (System Mode Only) .......................13
8. IP Security Menu ..........................................14
9. System Status Screen (Passwords Hidden) ...........................17
10. User Status Screen .........................................17
A.1. Console Port Interface ....................................Apx-1
A.2. Modem Port Interface .....................................Apx-1
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NPS Series - Network Power Switches, User's Guide Table of Contents

1. Introduction
Network equipment sometimes "locks-up", requiring a service call just to flip the power switch
to perform a simple reboot. The NPS Network Power Switch gives network administrators the
ability to perform this function from anywhere on the LAN/WAN, or if the network is down, to
simply dial-in from a modem for out-of-band power control.
Intelligent Power Control
The NPS can communicate over any TCP/IP network using generic Telnet, or out-of-band using
an external modem and terminal emulation. Each outlet can be assigned an individual
password, device name, reboot delay time and unique power-up default status.
Security and Co-Location Features
Address specific IP security masks prevent unauthorized network access to the NPS command
mode. The NPS provides two password security levels; System level and User level. The
System password allows access to all configuration and command functions. The User
password allows access only to assigned plugs. User level security features are ideal for co-
location applications, where multiple users may be allowed plug-specific access to the NPS
unit.
Easy to Use, Easy to Configure
Reboots and plug switching are controlled by simple ASCII commands sent to the unit via
network, modem or from a local PC. Set-up and configuration is also simple; easy-to-follow
menus lead the user through the installation process.
Features:
·Turn On/Off any AC Powered Device via Telnet, Modem or Local Terminal.
·Eight (8) Individual Switched Outlets
·Dual 15 Amp Circuits
·Two Levels of Outlet Specific Password Security plus Network Security
·115 VAC and 230 VAC Models
Typographic Conventions
Throughout this manual, typefaces and characters have been used to denote the following:
COURIER FONT Indicates characters typed on the keyboard.
For example, /ON 3 or /OFF 5.
[Bold Font] Text set in bold face and enclosed in square brackets indicates a specific
key. For example, [Enter] or [Esc].
1

2. Unit Description
2.1. Front Panel
As shown in Figure 1, the NPS front panel includes a series of LED indicators which function
as follows:
ÀON: Lights when AC Power is applied to the NPS.
ÁRDY: Flashes when the NPS is ready to receive commands.
ÂRXD: Lights when the NPS receives commands.
ÃDCD: Lights when the Modem Port detects the Carrier.
ÄNET: Lights when a Telnet session is in progress.
ÅBus A Indicators (1 - 4): Light when the corresponding Plug is switched On.
ÆBus B Indicators (5 - 8): Light when the corresponding Plug is switched On.
2
Figure 1: Front Panel

2.2. Back Panel
ÀBus B (Plugs5-8): Includes the following components:
A) Power Inlet with Cable Clamp: Supplies power for plugs 5 through 8.
B) Circuit Breaker: NPS-115: 15 Amps;
NPS-230: 10 Amps
C) Switched AC Outlets (5 - 8): Each outlet can switch up to 15 Amps (NPS-115) or 10
Amps (NPS-230). The total for all four outlets must not exceed 15 Amps for NPS-
115, or 10 Amps for NPS-230.
ÁBus A (Plugs1-4): Same as Item 1 above, except the Bus A Power Inlet supplies power
to plugs 1 through 4.
ÂMaster Power Switch: This switch must be in "On" in order for the NPS to function.
This switch is not used to set the On/Off status of the switched outlets.
ÃNetwork Port: An RJ45 Ethernet port for connection to your TCP/IP network. To
communicate via Network, you must first specify the IP Address, Subnet Mask and
Gateway Address as described in Section 4.6.
ÄDefault Button: Bypasses the password prompt as described in Section 4.2. Can also
reset unit to default settings as described in Section 3.7.
ÅOption Switches: A bank of four DIP Switches which select default settings for the baud
rate and other features.
ÆModem Port: A Male RS-232, DB9 Connector, DTE configuration. For connection to
an external modem.
ÇConsole Port: A Male RS-232, DB9 Connector, DTE configuration. For connection to a
local PC.
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NPS Series - Network Power Switches, User's Guide Unit Description
Figure 2: Back Panel (Model NPS-115 Shown)

3. Installation
3.1. Option Switches
The Option Switches select default settings for the Baud Rate, Command Echo, Boot Delay and
Disconnect Timeout. Default settings selected via the Option Switches will be used when the
unit is reset to default parameters as described in Section 3.7.
Note: Although the Option Switches select default settings for these features, the
NPS configuration menus can also be used to select operating parameters as
described in Section 4.
Option Switch settings are described below:
Baud Rate: The default baud rate for the Console Port and Modem Port. This rate will be
selected after a power interruption, and when the unit is reset to default parameters.
Boot Delay: The default Boot Delay setting. When a boot cycle is initiated, the Boot Delay
determines the length of time that the switched outlet will remain off until power is restored.
Command Echo: The default setting for the Command Echo for the Console Port, Modem
Port and Network Port. When enabled, commands entered at your keyboard will be sent to
the NPS and echoed back to your display monitor.
Disconnect Timeout: The default Disconnect Timeout value. This determines how long the
NPS will wait for additional commands before automatically disconnecting. Note that when
the NPS times out, DTR will drop, and the modem disconnect string and initialize string will
be sent.
Switch Function Up Down
1Default Baud Rate 38.4K bps 9600 bps*
2Default Boot Delay 10 Sec. 5 Sec.*
3Default Command Echo Enable Disable*
4Default Disconnect
Timeout
30 Min 2 Min*
* = Factory Setting
3.2. Console Port Connection
The Console Port is a male, DB9 connector, wired in a DTE configuration (similar to an AT
computer), which is used for connection to a local PC or control device. Appendix A describes
the Console Port interface.
4

3.3. Connecting an External Modem
When connecting directly to an external modem, use a standard AT to Modem cable. Make
certain the modem is initialized at the same baud rate as the NPS (Option Switch 1). The
modem must be set to Auto-Answer, in one ring. Please refer to the modem user’s guide for
more information. Section 4.4 describes the procedure for defining the modem command
strings. Appendix A describes the modem port interface.
3.4. Connecting the Network Cable
The Network Port is an RJ45 Ethernet jack, for connection to a TCP/IP network. Connect your
10Base-T cable to the Network Port. Before attempting to access the unit via network, please
assign the IP Address, Gateway Address and Subnet Mask as described in Section 4.6.
3.5. Power Supply Connection
The NPS includes two AC inputs. The Bus A input provides power for plugs 1 through 4. The
Bus B input provides power for plugs 5 through 8. In order for the NPS to function, Bus A
and/or Bus B must be connected to an appropriate power supply.
3.6. Connection to Switched Outlets
The Main Power Switch must be "On" in order for the NPS to operate. When the unit is
powered On, the eight AC outlets will be switched On or Off, as specified by the user defined
Power-Up Default (see Section 4.5).
·NPS-115: Each outlet can switch up to 15 Amps AC. The total for each Bus cannot
exceed 15 Amps.
·NPS-230: Each outlet can switch up to 10 Amps AC, The total for each Bus cannot
exceed 10 Amps.
3.7. Reset Unit to Defaults
If Option Switch settings are changed, the new settings will not be applied until the unit is
reset to default settings. There are two ways to reset the unit to defaults:
Note: When these reset procedures are performed, all user selected parameters,
including passwords and port names will be lost. Prior to performing these reset
procedures, it is strongly recommended to save configuration parameters to an
ASCII text file as described in Section 6.
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NPS Series - Network Power Switches, User's Guide Installation

3.7.1. Default Parameters Option
This method allows default parameters to be set without effecting the On/Off status of the
NPS's eight switched plugs. To reset the unit to default parameters, proceed as follows:
1. Access the NPS Command Mode (see Section 4.2 or 5.1).
2. At the NPS> command prompt, type /G and press [Enter]. The General Parameters
menu will appear.
3. From the General Parameters menu, type Aand press [Enter]. If command confirmation
is enabled, the unit will display a prompt. Type Yand press [Enter] to proceed with the
reset procedure. After a brief pause, parameters will be reset to default values.
Note: If the Default Parameters function is invoked via the Network Port, the IP
Address will not be reset. If this function is invoked via the Console Port or
Modem Port, the IP Address will be reset.
3.7.2. Default Button (Local)
Typically, this method is used when devices have not been connected to the NPS unit, and you
have immediate access to the installation site.
Note: This method will temporarily switch all plugs Off.
Set the Master Power Switch to the OFF position. Press and hold the Default Button, located
on the instrument back panel. Place the Master Power switch in the ON position. Wait about 5
seconds, and then release the Default Button.
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NPS Series - Network Power Switches, User's Guide Installation

4. Start-Up / Configuration
4.1. System Mode and User Mode
In order to restrict access to sensitive command functions, the NPS features two separate
operating modes; System Mode and User Mode.
The System Mode allows access to all configuration menus, command functions and status
screens. When the System Mode is active, Boot/On/Off commands can be directed to any of
the eight switched outlets. The System Mode Status Screen shows On/Off conditions for all
eight switched outlets, and lists currently defined system parameters.
The User Mode allows limited access to command functions and status screens; users are not
allowed to access configuration menus. When the User Mode is active, Boot/On/Off
commands can only be directed to the specific outlets that are "owned" by that individual user.
Outlets owned by other users cannot be switched. The User Mode Status Screen only shows
conditions at the outlets owned by the user; system parameters are not displayed.
When properly configured, the NPS will display a password prompt when the unit is contacted
via the Console Port, Modem Port or Network Port. The password entered at this prompt
determines whether the unit will start-up in System Mode or User Mode. If the System
Password (defined via the General Parameters menu) is entered, the System Mode will be
active. If the User Password (defined via the Plug Configuration Menus) is entered, the User
Mode will be active.
If the System Password is not defined, the NPS will not display the password prompt, and will
always start-up in System Mode. Once the System Password has been defined, individual users
can be granted access to specific outlets by assigning passwords to each plug as described in
Section 4.5.
7

4.2. Communicating with the NPS
In order to configure the NPS or invoke command functions, the user must first connect to the
NPS and access command mode.
1. The NPS is transparent to parity and will accept 7 or 8 bit characters, but will always
answer back at 8 bits, no parity. Make certain your communication program (e.g.
ProComm orHyper Terminal) is set for the appropriate baud rate, bits and parity.
a) Via Modem: Start your communications program. Dial the external modem
connected to the NPS. Wait for the Connect message and proceed to Step 2.
b) Via Local PC: Start your communications program and then press [Enter].
c) Via Network: During initial configuration, the NPS cannot be accessed via the
Network Port. After network parameters have been defined (see Section 4.6), the unit
may then be accessed via network as described in Section 5.1.
2. Password: If the System Password has been defined, the unit will display the Password
Prompt. Key in either the System Password or User Password, and press [Enter]. If the
system password has not been defined, the prompt will not be displayed.
Notes:
• The Password feature is case sensitive.
• If you forget the System Password, contact the NPS via the Console Port. When
the password prompt appears, press the default button to bypass the password
requirement. When the NPS> prompt appears, type /G and press [Enter] to
access the General Parameters menu. Use the General Parameters menu to assign
a new System Password.
3. If the System Password is entered, the NPS will display the System Help Screen
(Figure 3). If the User Password is entered, the NPS will display the User Help Screen
(Figure 4).
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NPS Series - Network Power Switches, User's Guide Start-Up / Configuration

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NPS Series - Network Power Switches, User's Guide Start-Up / Configuration
Network Power Switch v2.04 Site: WESTERN TELEMATIC, INC.
Commands:
Display
/H Display this Help Screen
/S[P] Display Plug Status, [P] with Passwords
Configuration
/G View/Set General Parameters
/P [n] View/Set Plug Parameters
/N View/Set Network Parameters
/DL Download Configuration to File
Control +------------------------------------+
/D Set Plugs to Default Settings | [n] = Optional Plug Name or Number |
/Boot <n> Boot Plug n | <n> = Required Plug Name or Number |
/On <n> Turn On Plug n | n+n = Plug n and Plug n |
/Off <n> Turn Off Plug n | n:n = Plug n through Plug n |
/T Reset Network Interface | * = All Plugs with Access |
/R Relogin as Different User +------------------------------------+
/X Exit/Disconnect
NPS>
Figure 3: System Help Screen
Network Power Switch v2.04 Site: WESTERN TELEMATIC, INC.
Commands:
Display
/H Display this Help Screen
/S Display Plug Status
Control
/D Set Plugs to Default Settings
/Boot <n> Boot Plug n
/On <n> Turn On Plug n
/Off <n> Turn Off Plug n
/X Exit/Disconnect
+------------------------------------+
| <n> = Required Plug Name or Number |
| n+n = Plug n and Plug n |
| n:n = Plug n through Plug n |
| * = All Plugs with Access |
+------------------------------------+
NPS>
Figure 4: User Help Screen

4.3. NPS Command/Menu Conventions
When invoking NPS commands and selecting items from configuration menus, note the
following:
·All NPS commands can be invoked at the NPS> command prompt, or from the General
Parameters Menu, Port Parameters Menus or Network Parameters Menu.
·NPS commands are not case sensitive. All NPS commands are invoked by pressing
[Enter].
·To select an item from an NPS menu, key in the number for the item and press [Enter].To
exit from a menu, press [Esc] at any time. Parameters defined up to that point will be
saved.
·To display the Help Screen, type /H [Enter].
·The ",Y" option can be used to temporarily suppress the "Sure?" confirmation prompt.
The ",Y" option is entered at the end of the command line, immediately following the
command or argument. For example, to reset the network port without displaying the
"Sure?" prompt, type /T,Y [Enter], or to switch off Plug 2 without displaying the "Sure"
prompt, type /OFF 2,Y [Enter].
4.4. Defining General Parameters
When the "NPS>" prompt appears, type /G [Enter] to display the General Parameters menu
(Figure 5). Note that this menu is not available in User Mode. The General Parameters menu
offers the following options:
1. System Password: (Up to 16 characters, case-sensitive) When the System Password is
defined, the NPS will display a prompt before allowing access to command mode. If the
System Password is entered, the NPS will start-up in System Mode. To define the System
Password, type 1and press [Enter]. (Default = undefined).
Note: If the System Password is not defined, the password prompt will not be
displayed, and the NPS will always start-up in System Mode.
2. Site ID: Defines a text string (up to 32 characters) that denotes the installation site. To
define the Site ID, type 2and press [Enter]. (Default = undefined).
3. Modem Initialization String: To define the Modem Initialization String (up to 32
characters), type 3and press [Enter]. For more information on the initialization string,
please refer to the user's guide for your external modem. Make certain that the modem is
set to auto-answer in one ring. (Default = ATE0M0Q1&C1&D2S0=1).
4. Modem Disconnect String: To define the Disconnect String (up to 32 characters), type
4press [Enter], and follow the instructions in the submenu. For more information,
please refer to the user's guide for your external modem. (Default = undefined).
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NPS Series - Network Power Switches, User's Guide Start-Up / Configuration

5. Baud Rate: The baud rate for the Modem Port and Console Port. To select the baud
rate, type 5press [Enter], and follow the instructions in the submenu. Make certain to
select a rate that is compatible with the external modem, and/or the device connected to
the Console Port. (Default value is selected by Option Switch 1).
Note: When this setting is changed, the new baud rate will not be applied until the
user exits and then re-enters the NPS Command Mode.
6. Command Echo: Enables/Disables the command echo. When enabled, commands sent
to the NPS will be echoed back to your PC, allowing keystrokes to be displayed . To
enable/disable the echo, type 6, press [Enter] and follow the instructions in the submenu.
(Default = Disabled).
7. Disconnect Timeout: Determines how long NPS will wait for additional commands. For
example, if the timeout is 2 minutes, NPS will disconnect after 2 minutes of inactivity.
Type 7, press [Enter], and follow the instructions in the submenu. (Default value
selected by Option Switch 4).
8. Command Confirmation: When enabled, the NPS will display a prompt before
completing the /T, /X, /R, /BOOT, /ON, /OFF, /D and "A" commands, and will also
display the System Status screen after these commands are successfully completed. To
enable or disable this feature, type 8press [Enter], and follow the instructions in the
submenu. (Default = Enabled).
A. Default Parameters: When selected, the NPS will display a prompt. Type Y[Enter] to
reset the unit to the defaults specified by the Option Switches. When this command is
invoked, all menu selected parameters, including port names and passwords, will be lost.
Note: If the Default Parameters function is invoked via the Network Port, the IP
Address will not be reset. If this function is invoked via the Console Port or
Modem Port, the IP Address will be reset.
After defining the General Parameters, press [Esc] to exit from the General Parameters menu.
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NPS Series - Network Power Switches, User's Guide Start-Up / Configuration
GENERAL PARAMETERS:
1. System Password: (undefined)
2. Site ID: (undefined)
3. Modem Init. String: ATE0M0Q1&C1&D2S0=1
4. Modem Disc. String: (undefined)
5. Baud Rate: 9600,N,8,1
6. Command Echo: Off
7. Disconnect Timeout: 30 Min
8. Command Confirmation: On
A. Default Parameters
Enter Selection or <ESC> to Exit ...
Figure 5: General Parameters Menu (System Mode Only)

4.5. Plug Parameters
The Plug Parameters menus are used to assign names and select parameters for each individual
switched outlet. There is a separate Plug Parameters menu for each outlet. Note that the Plug
Parameters menus are not available in User Mode.
In addition to selecting parameters for each outlet, the Plug Parameters menus also determine
which outlets will be controlled or "owned" by each User Password. A separate User Password
can be assigned to each plug, or the same password can be assigned to several plugs. When a
User Password is entered, the user will have access to all plugs owned by that password.
To access the Plug Parameters menus from the NPS> prompt, type /P n and press [Enter]
where nis the number or name of one of the eight switched outlets. The Plug Parameters menu
(Figure 6) offers the following options:
1. Plug Name: (Up to 16 Characters) Assigns a name to the plug. Typically this name
describes the equipment connected to the outlet. When plug names are assigned,
Boot/On/Off commands can be invoked using the name or number of the desired plug.
(Default = undefined).
2. Password: (Up to 16 Characters) Assigns a User Password to this plug. When a User
Password is assigned, the plug is then "owned" by that User Password. When the
password is entered at the prompt, the user will have access to this plug and all other
plugs owned by this password. (Default = undefined).
Note: If the System Password is defined, and the plug's User Password is not
defined, then the System Password will "own" this plug, and only the System Mode
will be able to control the plug.
3. Boot Delay: During a Boot cycle, power to the plug is first switched off and then
switched back on. The Boot Delay is the length of time which elapses between the time
when power is switched off and the time that power is restored. The Boot Delay can be
1, 5, 10, 15, 30 or 60 seconds. (Default value is selected by Option Switch 2).
4. Power-Up Default: Determines how this plug will react when the /D (default) command
is invoked, or after a power interruption. Each plug can be automatically switched On or
Off as specified by the Power-Up Default. (Default = On).
After Plug Parameters have been defined, press [Esc] to exit from the Plug Parameters menu.
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NPS Series - Network Power Switches, User's Guide Start-Up / Configuration
PLUG #1 PARAMETERS:
1. Plug Name: (undefined)
2. Password: (undefined)
3. Boot Delay: 5 Sec
4. Power Up Default: On
Enter Selection or <ESC> to Exit ...
Figure 6: Plug Parameters Menu (Plug 1 Shown)

4.6. Network Parameters
In order to communicate with the NPS via network, the IP Address, Subnet Mask and Gateway
Address must first be defined via the Network Parameters menu. If desired, this menu also
allows you to implement IP Security features, which can restrict command mode access based
on the user's IP Address.
Settings for network parameters depend upon the configuration of your individual network.
Please contact your network administrator for appropriate settings, and then assign parameters
as described in this section.
To access the Network Parameters menu (Figure 7), type /N and press [Enter]. Note that this
menu is not available in User Mode. The following options are available:
1. IP Address: Defines the IP Address for the NPS unit (Default = undefined). Type 1
press [Enter], and follow the instructions in the submenu.
2. Subnet Mask: Defines the Subnet Mask for the NPS unit (Default = undefined). Type 2
press [Enter], and follow the instructions in the submenu.
3. Gateway Address: Defines the Gateway Address for the NPS unit (Default =
undefined). Type 3press [Enter], and follow the instructions in the submenu.
4. IP Security: Sets up the IP Security feature as described in Section 4.6.1.
5. Mac Address: Displays the unit's MAC Address. Note that this item is not used to
redefine the MAC Address.
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NPS Series - Network Power Switches, User's Guide Start-Up / Configuration
NETWORK PARAMETERS:
1. IP Address: (undefined)
2. Subnet Mask: (undefined)
3. Gateway Address: (undefined)
4. IP Security
MAC Address: 00-40-05-5e-f3-90
Enter Selection or <ESC> to Exit ...
Figure 7: Network Parameters Menu (System Mode Only)

4.6.1. Implementing IP Security
The NPS can be configured to restrict unauthorized IP addresses from Telneting to the unit.
This allows the user to grant Telnet access to only a specific group of IP addresses, or block a
particular IP address from gaining access. In the default state, the NPS accepts incoming IP
connections from all hosts. To configure the IP Security feature, proceed as follows:
1. Access the Network Parameters menu as described in Section 4.6. Note that the Network
Parameters menu is not available in User Mode.
2. When the Network Parameters menu appears, type 4and press [Enter] to access the IP
Security menu (Figure 8).
3. The IP Security menu lists five IP Security "masks" along with the selected permit/deny
action for each mask.
a) Each Security Mask prompt is used to define a specific IP address or range of IP
addresses. Each Mask Action prompt is used to define the permit/deny action for the
corresponding Mask.
b) Masks are listed in order of ascending priority; Mask 1 has the lowest priority, Mask
5 has the highest priority.
c) Masks have a cumulative effect; high priority masks supersede the effect of lower
priority masks.
d) Each IP Address consists of a series of four eight bit numbers. The number 255 is
used as a wild card.
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NPS Series - Network Power Switches, User's Guide Start-Up / Configuration
IP SECURITY
1. Security Mask #1: (undefined)
2. Mask #1 Action: Permit
3. Security Mask #2: (undefined)
4. Mask #2 Action: Permit
5. Security Mask #3: (undefined)
6. Mask #3 Action: Permit
7. Security Mask #4: (undefined)
8. Mask #4 Action: Permit
9. Security Mask #5: (undefined)
10. Mask #5 Action: Permit
Enter Selection or <ESC> to Exit
Figure 8: IP Security Menu

Example 1: Deny access to all hosts except 192.1.1.5:
Security Mask #1: 255.255.255.255 Mask #1 Action: Deny
Security Mask #2: 192.1.1.5 Mask #2 Action: Permit
Since 255 is a wild card, Mask #1 blocks all IP Addresses. Mask #2 then specifically grants
access to 192.1.1.5 only.
Example 2: Allow access only by addresses that begin with 192.
Security Mask #1: 255.255.255.255 Mask #1 Action: Deny
Security Mask #2: 192.255.255.255 Mask #2 Action: Permit
Since 255 is a wild card, Mask 1 blocks all IP addresses. Mask 2 then grants access to all
addresses that begin with 192.
Example 3: Allow access only by addresses that begin with 192, deny access to 192.1.1.5.
Security Mask #1: 255.255.255.255 Mask #1 Action: Deny
Security Mask #2: 192.255.255.255 Mask #2 Action: Permit
Security Mask #3: 192.1.1.5 Mask #3 Action: Deny
Since 255 is a wild card, Mask 1 blocks all IP addresses. Mask 2 then grants access to all
addresses that begin with 192. Finally, Mask 3 specifically blocks access by 192.1.1.5.
Note:
• Mask #5 has priority over the other four masks. If Mask #5 is set to deny access
by "255.255.255.255" (all wild cards), all IP Addresses will be blocked, and you
will not be able to access the NPS Command Mode via network. Access will only
be allowed via the Console Port or Modem Port.
• When using the wild card address "255.255.255.255" to block access by all IP
Addresses, make certain that at least one higher priority mask permits access by
your IP address.
4.7. Save Configuration Parameters
After the unit has been completely configured, it is recommended to save parameters to an
ASCII file as described in Section 6. This allows quick recovery in the event that the unit is
reset to default parameters, or the configuration is accidentally deleted or altered.
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NPS Series - Network Power Switches, User's Guide Start-Up / Configuration

5. Operation
Your PC or Control Device must send ASCII characters at the same data rate as the NPS. The
unit accepts 8 bits no parity, or 7 bits even or odd parity, but will always answer back at
8 bits, no parity.
5.1. Access the NPS Command Mode
In order to invoke commands, the user must first access the NPS Command Mode. Commands
can be sent to the NPS via Network or modem, or from a local PC connected directly to the
Console Port. To access the Command Mode, proceed as follows:
1. Contact the NPS:
a) Via Network: Telnet to the NPS unit's IP Address. For example, assuming the IP
Address is "192.1.1.1", on a UNIX system the Telnet command would be invoked as
follows:
$ telnet 192.1.1.1 [Enter]
Note: If the Telnet connection to the NPS is refused, this probably means that the
unit is busy, or that the IP Security feature has denied the connection.
b) Via Modem: Start your communications program (e.g. ProComm or Hyper
Terminal). Dial the external modem that is connected to the NPS. Wait for the
Connect Message.
c) Via Console Port: Start your communications program (e.g. ProComm) and press
[Enter]. Make certain you are communicating via the COM port connected to the
NPS.
2. Password: If the System password has been defined, a prompt will be displayed. Key in
your System or User Password, and press [Enter].
3. Disconnect: To end the session, type /X and press [Enter] (or disconnect using Telnet
software).
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5.2. Displaying Plug Status
The Status Screens display the On/Off state and currently selected parameters for the switched
plugs. To display the Status Screen, type /S and press [Enter]. Note that although the /S
command is available in both User Mode and System Mode, the System Status Screen includes
more information than the User Status Screen.
17
NPS Series - Network Power Switches, User's Guide Operation
Network Power Switch v2.04 Site: WESTERN TELEMATIC, INC.
Plug | Name | Status | Boot Delay | Password | Default
------+------------------+--------+------------+------------------+---------
1 | ROUTER_A | ON | 15 Sec | (defined) | ON
2 | ROUTER_B | OFF | 15 Sec | (defined) | OFF
3 | DSU/CSU | ON | 10 Sec | (defined) | ON
4 | ATMSWITCH_A | ON | 10 Sec | (defined) | ON
5 | ATMSWITCH_B | ON | 10 Sec | (defined) | OFF
6 | LINUX_1 | ON | 5 Sec | (defined) | ON
7 | LINUX_2 | ON | 30 Sec | (defined) | OFF
8 | GATEWAY | ON | 30 Sec | (undefined) | ON
------+------------------+--------+------------+------------------+-------
"/H" for Help
Communication Settings: 9600,N,8,1
Modem Init. String: ATE0M0Q1&C1&D2S0=1
Modem Disc. String: +++ATZ
Disconnect Timeout: 30 Min
Command Echo: OFF
Plug Confirmation: ON
"/H" for Help
Figure 9: System Status Screen (Passwords Hidden)
Network Power Switch v2.04 Site: WESTERN TELEMATIC, INC.
Plug | Name | Status | Boot Delay | Password | Default
------+------------------+--------+------------+------------------+---------
3 | DSU/CSU | ON | 10 Sec | (defined) | ON
6 | LINUX_1 | ON | 5 Sec | (defined) | ON
7 | LINUX_2 | ON | 30 Sec | (defined) | OFF
------+------------------+--------+------------+------------------+---------
Disconnect Timeout: 30 Min
Command Echo: OFF
Plug Confirmation: ON
"/H" for Help
Figure 10: User Status Screen