AirLink Communications Host RJ-11 User manual

Copyright © 1993-2007 AirLink Communications, Inc. All rights reserved.
RJ-11 IP Gateway
User Guide and Quick Start
Version 1.01 - February 2007

RJ-11 IP Gateway User Guide and Quick Start, version 1.01 ii
Contents
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
RJ-11 IP Gateway with an AirLink Raven-E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
RJ-11 IP Gateway Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Quick Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Before You Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Software Required. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Hardware Required. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Cellular Account Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Important Information about Cellular Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Configuring your Raven-E for the RJ-11 IP Gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Configuring the IP Address and Interface Port of the RJ-11 IP Gateway . . . . . . . . . . . . .8
Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Connectors and Reset button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Configuration Settings and Commands . . . . . . . . . . . . . . . . . . . . . . . .14
Web-based Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Service Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Welcome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Serial Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Port Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Network Translation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Protocol Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Network Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Network Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
DNS Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
IP Routing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Time Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Security Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Online Update. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Status and Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
System Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Port Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
OS and Network Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Log Files and Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

RJ-11 IP Gateway User Guide and Quick Start, version 1.01 iii
Contents
Ping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Reset/Reboot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Flash Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Phone and Modem standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
AT Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Response Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Modem Signal Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Phone Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Port Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Warranty Terms and Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Standard Software Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
One Year Standard Equipment Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Warranty Conditions and Remedy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
WARRANTY DISCLAIMER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
LIMITATION OF LIABILITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
General Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
AirLink Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
AirLink Support Web Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
AirLink Documentation and Guides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Contacting Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

RJ-11 IP Gateway User Guide and Quick Start, version 1.01 3
CHAPTER 1 Introduction
Many existing meters, data loggers, RTU's, PLC's, point-of-sale, and other remote devices only
have physical interfaces designed to access the telephone network. They do not have serial or
Ethernet ports. They currently use analog cellular or standard phone lines to connect in circuit-
switched mode for data transfer.
Analog cellular phone service is being discontinued. The combination of the RJ-11 IP Gateway
and the AirLink Raven-E enables remote connectivity between host applications and these remote
devices over cellular packet data networks. The RJ-11 IP Gateway provides the bridge between a
device requiring an RJ-11 interface and the Raven-E, with its Ethernet interface.
RJ-11 IP Gateway with an AirLink Raven-E
RJ-11 IP Gateway Features
•One RJ-11 phone port
The phone port is a phone line designed to function just like standard wall-jack analog phone
line. It is designed primarily to connect dial-up devices, with internal modems, to the RJ-11 IP
Gateway, which then routes data from the devices over the network. The RJ-11 IP Gateway
mimics the phone company, answering incoming calls and routing them to an internal modem
attached to the phone port, or generating calls from an internal modem to an attached device.
Caution: The RJ-11 IP Gateway's RJ-11 phone port should never be connected into
the Public Switched Telephone Network (PSTN). This device is designed to emu-
late the PSTN for other devices. The RJ-11 IP Gateway may sustain damage not
covered by warranty if it is connected to the Public Switched Telephone Network.

RJ-11 IP Gateway User Guide and Quick Start, version 1.01 4
Introduction
•One RJ-45 auto-sensing 10base-T Ethernet port
The Ethernet port is designed to be connected to an AirLink modem with an Ethernet port such
as the Raven-E or Raven X. With the modem connected to the cellular network, the communi-
cation from the device connected to the RJ-11 port can be routed to the Internet and your
remote host.
•One power connector
The RJ-11 IP Gateway uses a DC power adapter with an optional AC adapter available.
•Status LEDs
The RJ-11 IP Gateway status LEDs give clear and concise information about the operation of
the ports.

RJ-11 IP Gateway User Guide and Quick Start, version 1.01 5
CHAPTER 2 Quick Start
Configuring the RJ-11 IP Gateway to work with your Raven-E and vice-versa is easy. This chapter
covers a basic configuration. For more advanced configuration of your Raven-E, refer to the
modem’s user guide. The complete configuration options for the RJ-11 IP Gateway are in this
guide.
Before You Start
Software Required
•Wireless Ace - Graphical interface for configuring your Raven-E. You can download Wireless
Ace from the AirLink website: http://www.airlink.com/support/modems/utilities/. A default
installation of this utility is assumed later in these directions.
Hardware Required
•Ethernet Cable - A cross-over or straight through Ethernet cable.
You will need a cross-over Ethernet cable to configure your Raven-E unless your computer’s
Ethernet port is auto-sensing.
The RJ-11 IP Gateway has an auto-sensing Ethernet port, you can use either a cross-over cable
or a straight-through Ethernet cable to connect the RJ-11 IP Gateway to the Raven-E.
•Power supplies and a power source - You will need a power supply and power source for both
the Raven-E and the RJ-11 IP Gateway.
•PC or Laptop - To configure both the RJ-11 IP Gateway and the modem, you will need a com-
puter with Internet Access, other than the cellular account, and an available Ethernet port.
While the Quick Start focuses on using the RJ-11 IP Gateway with an AirLink
Raven-E, you can use any AirLink modem equipped with an Ethernet port. The
configuration is the same.
Caution: The RJ-11 IP Gateway’s RJ-11 port (labeled “Phone”) should not be con-
nected into the Public Switched Telephone Network. This port is the emulation for
a Phone that you would have been using with your device. The RJ-11 IP Gateway
will sustain damage not covered by warranty if it is connected to the Public
Switched Telephone Network.

RJ-11 IP Gateway User Guide and Quick Start, version 1.01 6
Quick Start
Cellular Account Required
•Cellular Account - To use this guide you need to already have an active account with a cellular
provider and to have activated your modem with that provider. The AirLink Raven-E is certi-
fied to work with a variety of cellular providers.
If you need to activate your modem, you can use the Setup Wizard for your cellular provider
which you can obtain from the AirLink website: http://www.airlink.com/support/.
Important Information about Cellular Networks
•Port Blocking - Many cellular providers and other ISPs block ports below 1024 which are the
default ports for many server protocols (such as HTTP, telnet, and SSH). If your provider
blocks these ports, you will need to configure a port you can access.
Configuring your Raven-E for the RJ-11 IP Gateway
These steps are just a basic configuration to get you started and allow the Raven-E to connect with
the RJ-11 IP Gateway. Refer to the modem user guide for more configuration options for specific
environments.
A. Click on Connect.
B. Select UDP.
C. Type in the modem’s local IP (default is 192.168.13.31).
D. Type in the modem’s password (default 12345)
FIGURE 1. Wireless Ace: Connect
1. Connect your Raven-E directly to the Ethernet port on your computer and to power.
2. Start Wireless Ace and connect to your modem.
Start > All Programs > AirLink Communications > Wireless Ace 3G > Wireless Ace 3G
3. Select PPP/Ethernet from the menu on the left side of Wireless Ace (under “Groups”).

RJ-11 IP Gateway User Guide and Quick Start, version 1.01 7
Quick Start
Configure the Raven-E for Public Mode. Set the *HOSTPRIVMODE to 0. In this mode, the
modem assigns the RJ-11 IP Gateway the IP address it has received from your cellular provider.
This is the default setting for the modem.
FIGURE 2. Wireless Ace: PPP/Ethernet
FIGURE 3. Wireless Ace: Write
A. Select Status from the menu on the left side of Wireless Ace (under “Groups”).
FIGURE 4. Wireless Ace: Status
B. Note the IP address listed in the Value column for the command *NETIP.
For *NETSTATE, “Network Ready” means your modem is connected on the cellular network and
waiting for connections. “Network Dormant” means the modem is connected and waiting for con-
nections but the connection has been idle. In either state, the modem is ready for the steps in the
next section.
4. When you have finished configuring the Ethernet settings, click the Write button on the tool bar
of Wireless Ace and wait for the message “Write Successful” to appear in the status bar.
5. Note the IP address given to the modem by your cellular provider.
6. Disconnect your modem’s Ethernet cable from your computer, but leave the modem connected to
power so it remains on the cellular network.
0 - Use Public IP

RJ-11 IP Gateway User Guide and Quick Start, version 1.01 8
Quick Start
Configuring the IP Address and Interface Port of the RJ-11 IP
Gateway
The IP Address configuration is how the RJ-11 IP Gateway will communicate with the Raven-E.
FIGURE 5. Web Browser : Enter the Location
The web-based interface will open. On the left side of the window are menu options. The central
area of the window is the working area (shown in the close up screen shots for the configuration
settings).
FIGURE 6. RJ-11 IP Gateway Interface
1. Connect the RJ-11 IP Gateway to power and connect the Ethernet cable from your Raven-E to the
RJ-11 IP Gateway.
Caution: If the modem has been disconnected from power between the steps of the
previous section and this section, it may have a different IP address than what you
noted. You will need to reconnect the modem to your computer, reconnect Wire-
less Ace and repeat step 5 above (page 7) to determine the new IP address given to
the modem by the cellular provider.
2. Open your web browser and use the IP address from step 5 above as the web address. Type
“http://”, the IP address, and “:9080” (see the example in the screenshot below) in the Address
or Location bar and press the enter key.
Since many cellular carriers block the standard web browser ports (80 and 8080),
the RJ-11 IP Gateway uses 9080 by default as the port for the web-based interface.
http://166.213.236.221:9080

RJ-11 IP Gateway User Guide and Quick Start, version 1.01 9
Quick Start
FIGURE 7. RJ-11 IP Gateway: Network Settings
In DHCP Mode, the RJ-11 IP Gateway will receive its IP address from the modem. This is the
default configuration for the RJ-11 IP Gateway.
The IPv4 Address and the IPv4 Netmask should be listed as 0.0.0.0.
FIGURE 8. RJ-11 IP Gateway: Network Interface Settings
3. Select Network Settings from the menu on the left.
Note: DHCP Mode is the recommended setting.
4. Select Serial Settings from the menu on the left.

RJ-11 IP Gateway User Guide and Quick Start, version 1.01 10
Quick Start
The Serial Settings page allows you to specify the baud rate, protocol, character size, parity, stop
bits, and flow control behavior for the RJ-11 port (Phone).
FIGURE 9. RJ-11 IP Gateway: Serial Settings
For more information on these settings, refer to page 16.
FIGURE 10. RJ-11 IP Gateway: Reset/Reboot
Click the Reboot button to restart the RJ-11 IP Gateway with the configured settings.
Note: For most configurations, the default settings are best. Change these parame-
ters only if you know the device you will be connecting to the RJ-11 IP Gateway
requires special settings.
5. Click on the Reset/Reboot menu option for the IP Address configuration and any changes to the
serial port settings to take effect.

RJ-11 IP Gateway User Guide and Quick Start, version 1.01 11
CHAPTER 3 Hardware
Designed for simplicity, the RJ-11 IP Gateway hardware has few complicated parts.
Connectors and Reset button
The Reset button is recessed. To reset the connection, using an unbent paperclip or other narrow,
blunt tip, press and quickly release the reset button. To reset the configuration to the factory
default, press and hold the reset button until you see the appropriate alternating light sequence.
FIGURE 1. Right side: RJ-45 connector, Power connector, and Reset button (not to scale)
FIGURE 2. Left side: RJ-11(phone) connector (not to scale)
Status LEDs
The top panel of the RJ-11 IP Gateway displays the status LEDs for the RJ-11 IP Gateway.
Caution: The RJ-11 IP Gateway's RJ-11 phone port should never be connected into
the Public Switched Telephone Network (PSTN). This device is designed to emu-
late the PSTN for other devices. The RJ-11 IP Gateway may sustain damage not
covered by warranty if it is connected to the Public Switched Telephone Network.
Power
RJ-45 Ethernet
Reset
RJ-11

RJ-11 IP Gateway User Guide and Quick Start, version 1.01 12
Hardware
FIGURE 3. RJ-11 IP Gateway Top Panel (not to scale)
•STATUS - Indicates the overall status of the device.
TABLE 1. Status - Normal Operation
LED Condition Description
Blinking Yellow The RJ-11 IP Gateway is starting up.
Solid Green The RJ-11 IP Gateway is obtaining an IP address from the
modem.
Blinking Green The RJ-11 IP Gateway has an IP address and is operating
normally.
Off No power to the RJ-11 IP Gateway.
TABLE 2. Status - Resetting the Configuration
LED Condition Description
Alternating Green/Red While the Reset button is held in, the status light will begin
to blink in this sequence to indicate the RJ-11 IP Gateway
will shortly restore the factory default condition.
If you do not want to restore the factory default, release the
button before the sequence changes to Green/Yellow.
Alternating Green/Yellow While the Reset button is held in, the status light will begin
to blink in this sequence to indicate the factory default con-
figuration was restored. Once the RJ-11 IP Gateway indi-
cates the configuration was restored, you can release the
reset button.
TABLE 3. Status - Error Conditions
LED Condition Description
Alternating Green/Red A serious system error occurred. See the system log for
more details.

RJ-11 IP Gateway User Guide and Quick Start, version 1.01 13
Hardware
•ETHERNET - Indicates the status of the Ethernet connection (RJ-45 port).
•PHONE - Indicates the status of the phone port (RJ-11).
Alternating Green/Yellow The current configuration is corrupt and the factory default
configuration is being used
Solid Red The RJ-11 IP Gateway has encountered a fatal error, contact
technical support for assistance.
TABLE 4. Ethernet
LED Condition Description
Solid Green The Ethernet link is available and idle.
Green/Yellow Blinking Network traffic is detected.
Off The Ethernet link is unavailable.
TABLE 5. Phone
LED Condition Description
Solid Green The port is open and idle.
Blinking Green The port is open, and data is being transmitted or received.
When data is being continuously transferred, this LED will
blink approximately 2 times per second.
Blinking Red Data errors will cause periodic red blinks. Persistent red
blinks may imply a configuration problem (incorrect baud
rate, parity settings, etc.)
Yellow Port is closed.
Solid Red Port hardware has failed.
Off Power is off.
TABLE 3. Status - Error Conditions

RJ-11 IP Gateway User Guide and Quick Start, version 1.01 14
CHAPTER 4 Configuration Settings and
Commands
The RJ-11 IP Gateway can be configured to handle a variety of devices which need to connect to an
RJ-11 port.
Web-based Interface
The RJ-11 IP Gateway employs a web-based user interface. To access the web interface, you will
need to know the IP Address given to your Raven-E by the cellular carrier (or the modem domain
name if you have configured IP Manager settings for the modem). Type the IP address (or modem
domain name) into the Address bar of your web browser followed by “:9080” (see the example
below).
FIGURE 1. Web Browser: Enter the Location
The web interface for the RJ-11 IP Gateway, by default, has no security. If you made changes to
the security configuration (“Security Settings” on page 23), you will be prompted for a user name
and password before the web-based interface will open.
The menu selections for the configuration interface are on the left side of the window.
For configuration options for your Raven-E, refer to the modems’s user guide. All
user guides are available on the AirLink website: http://www.airlink.com/support.
Note: Screen shots in this guide are using Microsoft Internet Explorer, but you can
use any web browser to configure the RJ-11 IP Gateway.
Since many cellular carriers block the standard web browser ports (80 and 8080),
the RJ-11 IP Gateway uses 9080 by default as a port for the web-based interface.
http://166.213.236.221:9080

RJ-11 IP Gateway User Guide and Quick Start, version 1.01 15
Configuration Settings and Commands
FIGURE 2. RJ-11 IP Gateway Web Browser-based Interface
Service Configuration
Most of the Service Configuration menu options deal with the RJ-11 port.
Welcome
The Welcome screen is the first page displayed when you connect to the RJ-11 IP Gateway. Cur-
rent settings and status are shown in a table.
FIGURE 3. RJ-11 IP Gateway: Welcome - Device Server Information

RJ-11 IP Gateway User Guide and Quick Start, version 1.01 16
Configuration Settings and Commands
•Ethernet Address: MAC Address of the RJ-11 IP Gateway.
•IP Address: The current IP Address of the RJ-11 IP Gateway and how the IP address was
assigned (in the example, a Raven-E in Public Mode used DHCP to give the RJ-11 IP Gateway
the IP addressed assigned by the cellular network).
•IP Netmask: The current subnetmask of the RJ-11 IP Gateway and how the device obtained it.
Serial Settings
The Serial Settings page allows you to specify the baud rate, protocol, character size, parity, stop
bits, and flow control behavior for the RJ-11 port (Phone).
FIGURE 4. RJ-11 IP Gateway: Serial Settings
•Enabling flow control enables it on both input and output.
•The inactivity time-out shuts down the service on the port if there is no input or output in the
specified time-out period.
Note: For most configurations, the default settings (shown in the screen shots) are
best. Change these parameters only if you know the device you will be connecting
to the RJ-11 IP Gateway requires special settings.

RJ-11 IP Gateway User Guide and Quick Start, version 1.01 17
Configuration Settings and Commands
•With Modem Signal Loopbacks, the RJ-11 IP Gateway eliminates the use of specialized cables
required to change signal types and directions by performing the loopback of signal types to
other signal types internally.
•NativeCOM, (or any RFC-2217 Telnet client with COM-PORT-OPTION support) overrides the
baud rate, size, parity, stop bits and flow control parameters.
Port Services
By default, the RJ-11 port is configured to accept incoming TCP connections from TCP/telnet cli-
ents with outgoing servicebased on phone numbers dialed by the attached device (Modem Ser-
vice). You may configure the ports to initiate outgoing raw TCP or telnet connections to remote
servers. In addition, the modem emulation feature may be enabled to allow a serial port to mimic a
modem interface.
•When using the modem service on the port, the phone number will be translated to a host/port
pair then a TCP connection will be established to the remote host.
•When using outgoing connections on the port, the settings configured on the Serial Settings
page will be applied to the port, and a TCP connection will be established to the remote host.
•Once connected, data received on the port is sent to the remote server over the network connec-
tion and data received on the network connection is sent out the port.
FIGURE 5. RJ-11 IP Gateway: Port Services
•No Outgoing Service: Disables outgoing port services on the specified port. Incoming connec-
tions are still allowed. All port services options will reset to defaults.

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Configuration Settings and Commands
•Modem Service: Enables modem emulation on both the incoming and outgoing network con-
nections. The target peer (specified in the Phone Number Translation table and configured in
the Protocol Settings page) determines the type of outgoing connection that will be made.
•Outgoing Network Connection: Enables an outgoing connection to the specified host.
•Outgoing Telnet Connection: Enables an outgoing telnet connection to the specified host.
•Modem Service Options: When Modem Service is selected, you may also configure the
Source TCP Port. In most cases, the value used for the source port is arbitrary and you can
leave this field set to 0 for “any”. However, if your server or firewall has specific requirements
you may specify an explicit source port number in the Source TCP Port field. If this port is not
available when the TCP service starts up, an error will occur and the TCP service will reset and
try again.
Network Translation
The RJ-11 IP Gateway is capable of accepting incoming TCP connections and redirecting them to
remote TCP hosts. This functionality is called network translation and behaves much like a TCP
"pipe" between two systems. The RJ-11 IP Gateway also uses Network Translation to allow con-
nections to the web-base interface on a port other than the http protocol defined port of 80 which is
frequently blocked by cellular carriers.
FIGURE 6. RJ-11 IP Gateway: Network Translation
It is also possible to modify the network protocol traveling through the TCP pipe by using the Pro-
tocol Settings page to define the remote host's protocol requirements. The most common use for
this functionality is to add SSL encryption to an incoming TCP connection prior to sending it along
to the remote host.
The Network Translation table is used to define network mappings for TCP pipes. You must first
specify the incoming TCP port to which your device or application will connect. Then, you must
specify the outgoing hostname and destination TCP port for the TCP pipe.
You can also specify the source TCP port for the outgoing TCP connection. Usually, this should be
set to 0 to allow automatic selection of the source port. However, if you have a firewall that

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Configuration Settings and Commands
imposes limits on source TCP ports then you may need to set this to something specific. Note that
if you specify something other than 0, you will be limited to only 1 TCP pipe at-a-time for any
given destination port.
Protocol Settings
For each host (peer) you will make an outgoing connection to, you need to specify the protocol
options used for that host. For each host, select the Host from the “Edit settings for a different peer”
selection box. Select “Add a new peer definition” link to add a new host.
FIGURE 7. RJ-11 IP Gateway: Protocol Settings
The hosts are identified by their IP address or Hostname and TCP port. You may also specify wild
cards. Specific host names and/or port numbers take precedence over the wild cards. An asterisk
for the IP address/hostname (for instance “*:443”) means any other host when connecting on port
443. An asterisk for the port number (for instance “host.peer.com:*”) refers to any other port on
that host. And a double asterisk (“*:*”) refers to all other hosts.
Network Configuration
The Network Configuration group configures settings for the RJ-45 Ethernet port.
Network Settings
The Network Settings page allows you to set the IP address, the IP netmask, and the TCP keep-
alive settings.
Every IP address contains two pieces of information: the network number and the host number. A
network number is assigned to each local area network and is shared by all the network devices on
that network. Each network device, or “host”, is assigned a unique host number. The IP netmask
defines which portion of an IP address contains the network number, and which portion contains
the host number. The default netmask depends on the “class” of the IP address that you are using.