Multitech MultiConnect Cell 100 series User manual

MultiConnect®Cell
MTC-MNK1 User Guide

MULTICONNECT® CELL SERIES 100 USER GUIDE
2 MultiConnect®Cell MTC-MNK1 User Guide
MultiConnect®Cell Series 100 User Guide
Model: MTC-MNK1
Part Number: S000777 1.0
Copyright
This publication may not be reproduced, in whole or in part, without the specific and express prior written permission signed by an executive officer of
Multi-Tech Systems, Inc. All rights reserved. Copyright © 2020 by Multi-Tech Systems, Inc.
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infringement.
Multi-Tech Systems, Inc. reserves the right to revise this publication and to make changes from time to time in the content hereof without obligation of
Multi-Tech Systems, Inc. to notify any person or organization of such revisions or changes.
Trademarks
MultiTech®, the MultiTech logo, and MultiConnect are registered trademarks of Multi-Tech Systems, Inc. All other brand and product names are trademarks
or registered trademarks of their respective companies.
Legal Notices
The MultiTech products are not designed, manufactured or intended for use, and should not be used, or sold or re-sold for use, in connection with
applications requiring fail-safe performance or in applications where the failure of the products would reasonably be expected to result in personal injury or
death, significant property damage, or serious physical or environmental damage. Examples of such use include life support machines or other life
preserving medical devices or systems, air traffic control or aircraft navigation or communications systems, control equipment for nuclear facilities, or
missile, nuclear, biological or chemical weapons or other military applications (“Restricted Applications”). Use of the products in such Restricted
Applications is at the user’s sole risk and liability.
MULTITECH DOES NOT WARRANT THAT THE TRANSMISSION OF DATA BY A PRODUCT OVER A CELLULAR COMMUNICATIONS NETWORK WILL BE
UNINTERRUPTED, TIMELY, SECURE OR ERROR FREE, NOR DOES MULTITECH WARRANT ANY CONNECTION OR ACCESSIBILITY TO ANY CELLULAR
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COMMUNICATIONS NETWORK USING THE PRODUCTS.
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World Headquarters
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Phone: [phone] or [phone]
Fax [phone]

CONTENTS
MultiConnect®Cell MTC-MNK1 User Guide 3
Contents
Chapter 1 – Product Overview ................................................................................................................................. 5
About the MultiConnect Cell Modem........................................................................................................................... 5
Product Build Options ................................................................................................................................................... 5
Documentation ............................................................................................................................................................. 5
Dimensions.................................................................................................................................................................... 6
Serial............................................................................................................................................................................ 6
USB.............................................................................................................................................................................. 7
LED Descriptions ........................................................................................................................................................... 8
Side Panels .................................................................................................................................................................... 8
MTC-MNK1 Specifications............................................................................................................................................. 9
RS-232 9-Pin Female Connector ................................................................................................................................. 10
Power Measurements................................................................................................................................................. 10
Serial Model: MTC-MNK1-B01 Power Draw ............................................................................................................. 10
USB Model: MTC-MNK1-B03 Power Draw................................................................................................................ 11
Chapter 2 – Safety Warnings.................................................................................................................................. 12
Radio Frequency (RF) Safety ....................................................................................................................................... 12
Interference with Pacemakers and Other Medical Devices ...................................................................................... 12
Potential interference............................................................................................................................................... 12
Precautions for pacemaker wearers ........................................................................................................................ 12
Chapter 3 – Installing and Using the Device ........................................................................................................... 13
Installing a SIM Card ................................................................................................................................................... 13
Removing a SIM Card................................................................................................................................................ 13
Installing the Device.................................................................................................................................................... 13
Placing Serial Devices in Power Save Mode.............................................................................................................. 14
USB Cable Recommendations................................................................................................................................... 14
Powering Down Your Device ...................................................................................................................................... 14
Mounting Device to Flat Surface................................................................................................................................. 15
Chapter 4 – Antenna and Activation Information................................................................................................... 16
Antenna System Cellular Devices................................................................................................................................ 16
Antenna....................................................................................................................................................................... 16
Antenna Specifications ............................................................................................................................................. 16
Account Activation for Cellular Devices ..................................................................................................................... 16
Device Phone Number ................................................................................................................................................ 16
Chapter 5 – Configuring and Communicating with Your Device.............................................................................. 17
Before Using the Device.............................................................................................................................................. 17
Using Command Mode and Online Data Mode.......................................................................................................... 17
Verifying Signal Strength............................................................................................................................................. 17

CONTENTS
4 MultiConnect®Cell MTC-MNK1 User Guide
Example .................................................................................................................................................................... 18
Checking Network Registration................................................................................................................................... 18
Sending and Receiving Data........................................................................................................................................ 19
Connecting Device to TCP Server as TCP Client........................................................................................................ 19
Configuring Device as UDP Listener to Accept UDP Client Connections ................................................................. 20
Configuring Device as UDP Client to Connect to UDP Server ................................................................................... 21
Transferring FTP File to FTP Server ........................................................................................................................... 22
Downloading File from FTP Server............................................................................................................................ 23
Reading, Writing and Deleting Messages ................................................................................................................... 24
Reading Text Messages............................................................................................................................................. 24
Sending Text Messages............................................................................................................................................. 25
Deleting Messages .................................................................................................................................................... 26
Chapter 6 – Regulatory Information....................................................................................................................... 27
Korea Regulatory Information .................................................................................................................................... 27
Restriction of the Use of Hazardous Substances (RoHS) ............................................................................................ 28
REACH Statement ....................................................................................................................................................... 28
Registration of Substances........................................................................................................................................ 28
Waste Electrical and Electronic Equipment Statement .............................................................................................. 28
WEEE Directive.......................................................................................................................................................... 28
Instructions for Disposal of WEEE by Users in the European Union ........................................................................ 29
Information on HS/TS Substances According to Chinese Standards ......................................................................... 30
Information on HS/TS Substances According to Chinese Standards (in Chinese) ...................................................... 31
Chapter 7 – Using Connection Manager ................................................................................................................. 32
Installing Connection Manager ................................................................................................................................... 32
Setting Up a Serial Device in Windows Device Manager............................................................................................ 33
Connecting a Device.................................................................................................................................................... 35
Uninstalling Connection Manager............................................................................................................................... 36
Connection Manager User Interface........................................................................................................................... 37
Main tab.................................................................................................................................................................... 37
Settings tab ............................................................................................................................................................... 38
Connection tab.......................................................................................................................................................... 38
Details tab ................................................................................................................................................................. 38
Terminal tab.............................................................................................................................................................. 38
Charts tab.................................................................................................................................................................. 38
Troubleshooting .......................................................................................................................................................... 39
Serial COM port is not available in the Serial Modem Settings................................................................................ 39
Device is not detected ("No Device") ....................................................................................................................... 39
MultiConnect Cell USB Modem is not detected ....................................................................................................... 39
Connection Manager is not working, and a device connected to the computer is not detected............................ 39
Connection Manager displays "Device Error" status for a serial device .................................................................. 39

PRODUCT OVERVIEW
MultiConnect®Cell MTC-MNK1 User Guide 5
Chapter 1 – Product Overview
About the MultiConnect Cell Modem
MultiConnect® Cell 100 Series MTC-MNK1 cellular modems are ready-to-deploy, standalone LTE Category M1
modems that provide wireless communication. The MTC-MNK1 is a compact communications platform that
provides cellular capabilities for fixed and mobile applications. It is intended for use in energy, utility, or industrial
settings. The MTC-MNK1 is available with RS-232 or as a USB to Cellular device.
Product Build Options
Product Description
MTC-MNK1-B01 LTE Cat M1 Modem, RS-232 interface with KR Accessory Kit (Korea)
MTC-MNK1-B03 LTE Cat M1 Modem, USB interface with USB Accessory Kit (Korea)
Documentation
The following documentation is available on the product page of the MultiTech website
(https://www.multitech.com/brands/multiconnect-cell-100-series).
Document Description
MultiConnect Cell User
Guide
This document. Provides an overview, safety and regulatory information,
schematics, and general device information.
Telit ME910C1 AT
Commands Reference Guide
You can configure the device using the LTE AT Commands. These commands are
documented in the Telit AT Command Reference Guide P/N: 80529ST10815A.
USB Driver Installation Guide
for LTE Devices
The document provides instructions on USB driver installation for LTE devices P/N:
S000616.
MultiConnect Cell User
Guide
Steps for getting started with hardware. Ships with the device and is available
online. P/N: 82130650L

PRODUCT OVERVIEW
6 MultiConnect®Cell MTC-MNK1 User Guide
Dimensions
Serial

PRODUCT OVERVIEW
MultiConnect®Cell MTC-MNK1 User Guide 7
USB

PRODUCT OVERVIEW
8 MultiConnect®Cell MTC-MNK1 User Guide
LED Descriptions
The top panel contains the following LEDs:
Power and Terminal Ready LEDs—The Power LED indicates that DC power is present and the TR LED blinks
when the unit is functioning normally.
Modem LEDs—Two modem LEDs indicate carrier detection and link status (for serial units only).
Prog. Signal LEDs—Three programmable signal LEDs can display the signal strength level of the wireless
connection if coded by the user.
LED Indicators
POWER Indicates presence of DC power when lit.
TR Terminal Ready. When lit, indicates connection to terminal emulation. When not lit,
indicates no terminal is present.
(for serial only)
CD Carrier Detect. Indicates established data connection when lit.
(for serial only)
PROG. SIGNAL These LEDs do not function by default and require the user to write code in order to
control them. If programmed, they display the strength of the cellular signal.
Note: The three PROG. SIGNAL LEDs can be controlled as follows:
GPIO2: Controls the LED with a single bar above it
GPIO3: Controls the LED with two bars above it
GPIO4: Controls the LED with three bars above it
For more information on using GPIO to control the LEDs, refer to the AT Command Guide.
Side Panels
The device has connectors on either side. The figures that follow show the side panels.

PRODUCT OVERVIEW
MultiConnect®Cell MTC-MNK1 User Guide 9
MTC-MNK1 Specifications
Category Description
General
Standards LTE UE Category M1/NB1, 3GPP release 13 compliant
USB Interface is CDC-ACM compliant
TCP/IP Functions FTP, SMTP, SSL, TCP, UDP
Frequency Bands 4G: 1800 (B3) / 850 (B5)
Speed
Data Speed LTE Cat M1: Up to 375 Kbps uplink / Up to 300 Kbps downlink
LTE Cat NB1: Up to 62.5 Kbps uplink/ Up to 21 Kbps downlink.
Interface
USB Interface USB 2.0 high speed compatible
Serial Modem Interface Up to 921.6 Kbps
UART Interface RS-232 levels
Physical Description
Weight 0.4 oz. (10 g)
Dimensions Refer to mechanical drawing for dimensions.
Connectors
Antenna Connectors 1 SMA connector for cellular
SIM 1.8V and 3V SIM holder for mini-SIM card
Environment
Operating Temperature -40° C to +85° C
Storage Temperature -40° C to +85° C
Humidity 20%-90% RH, non-condensing
Power Requirements
Operating Voltage Serial Models: 5-32 VDC
USB Models: 5 VDC
SMS
SMS Point-to-Point messaging
Mobile-Terminated SMS
Mobile-Originated SMS

PRODUCT OVERVIEW
10 MultiConnect®Cell MTC-MNK1 User Guide
Category Description
Certifications and Compliance
EMC Compliance KC
Radio Compliance KC
Safety Compliance IEC 60950-1 2nd ED
RS-232 9-Pin Female Connector
Pin Abbreviation Description In/Out
1 CD Carrier Detect O
2 RX Receive O
3 TX Transmit I
4 DTR Data Terminal Ready I
5 GND Ground --
6 DSR Data Set Ready O
7 RTS Request to Send I
8 CTS Clear to Send O
9 RI Ring Indicator O
Power Measurements
Multi-Tech Systems, Inc. recommends incorporating a 10% buffer into your power source when determining
product load.
Serial Model: MTC-MNK1-B01 Power Draw
Radio
Protocol
Sleep mode
current,
connected to
wireless
Cellular call
box
connection, no
data
Average
measured
current at
maximum
power
Average TX
pulse
amplitude
current
Total inrush
charge, in
Total inrush
charge
duration during
power-up
9 Volts
LTE 836.5
MHz
(Band 5)
12 mA 26 mA 105 mA 144 mA 0.762 mC 9.1 mS

PRODUCT OVERVIEW
MultiConnect®Cell MTC-MNK1 User Guide 11
Radio
Protocol
Sleep mode
current,
connected to
wireless
Cellular call
box
connection, no
data
Average
measured
current at
maximum
power
Average TX
pulse
amplitude
current
Total inrush
charge, in
Total inrush
charge
duration during
power-up
12 Volts
LTE 836.5
MHz
(Band 5)
7 mA 25 mA 87 mA 132 mA 0.781 mC 7.6 mS
24 Volts
LTE 836.5
MHz
(Band 5)
4 mA 15 mA 56 mA 116 mA 1.24 mC 15.4 mS
USB Model: MTC-MNK1-B03 Power Draw
Radio
Protocol
Sleep mode
current
Cellular
connection
idle, no data
Live
Connection
idle current
Average
current at
Max
Power
Average TX
pulse
amplitude
current
Total inrush
charge
Total
inrush
charge
duration
during
powerup
5 Volts
LTE Band
5
N/A 31 mA N/A 188 mA 340 mA 1.34 mC 8.57 mS
Note:
Tx Pulse: The average peak current during an LTE connection.
Maximum Power: The continuous current during maximum data rate with the radio transmitter at
maximum power
Inrush Charge: The total inrush charge at power on.

SAFETY WARNINGS
12 MultiConnect®Cell MTC-MNK1 User Guide
Chapter 2 – Safety Warnings
Radio Frequency (RF) Safety
Due to the possibility of radio frequency (RF) interference, it is important that you follow any special regulations
regarding the use of radio equipment. Follow the safety advice given below.
Operating your device close to other electronic equipment may cause interference if the equipment is
inadequately protected. Observe any warning signs and manufacturers’ recommendations.
Different industries and businesses restrict the use of cellular devices. Respect restrictions on the use of
radio equipment in fuel depots, chemical plants, or where blasting operations are in process. Follow
restrictions for any environment where you operate the device.
Do not place the antenna outdoors.
Switch OFF your wireless device when in an aircraft. Using portable electronic devices in an aircraft may
endanger aircraft operation, disrupt the cellular network, and is illegal. Failing to observe this restriction
may lead to suspension or denial of cellular services to the offender, legal action, or both.
Switch OFF your wireless device when around gasoline or diesel-fuel pumps and before filling your vehicle
with fuel.
Switch OFF your wireless device in hospitals and any other place where medical equipment may be in use.
Interference with Pacemakers and Other Medical Devices
Potential interference
Radio frequency energy (RF) from cellular devices can interact with some electronic devices. This is
electromagnetic interference (EMI). The FDA helped develop a detailed test method to measure EMI of implanted
cardiac pacemakers and defibrillators from cellular devices. This test method is part of the Association for the
Advancement of Medical Instrumentation (AAMI) standard. This standard allows manufacturers to ensure that
cardiac pacemakers and defibrillators are safe from cellular device EMI.
The FDA continues to monitor cellular devices for interactions with other medical devices. If harmful interference
occurs, the FDA will assess the interference and work to resolve the problem.
Precautions for pacemaker wearers
If EMI occurs, it could affect a pacemaker in one of three ways:
Stop the pacemaker from delivering the stimulating pulses that regulate the heart's rhythm.
Cause the pacemaker to deliver the pulses irregularly.
Cause the pacemaker to ignore the heart's own rhythm and deliver pulses at a fixed rate.
Based on current research, cellular devices do not pose a significant health problem for most pacemaker wearers.
However, people with pacemakers may want to take simple precautions to be sure that their device doesn't cause
a problem.
Keep the device on the opposite side of the body from the pacemaker to add extra distance between the
pacemaker and the device.
Avoid placing a turned-on device next to the pacemaker (for example, don’t carry the device in a shirt or
jacket pocket directly over the pacemaker).

INSTALLING AND USING THE DEVICE
MultiConnect®Cell MTC-MNK1 User Guide 13
Chapter 3 – Installing and Using the Device
Installing a SIM Card
This model requires a SIM card, which is supplied by your service provider. To install the SIM card:
1. Locate the SIM card slot on the side of the modem. The slot is labeled SIM.
2. Slide the SIM card into the SIM card slot with the contact side facing down as shown. When the SIM card
is installed, it locks into place.
Removing a SIM Card
To remove the SIM card, push the SIM card in. The device ejects the SIM card.
Installing the Device
1. Connect suitable antenna(s) to the antenna connector(s).
2. If your device is the serial version:
Connect the DE9 male connector (9-pin) of the RS-232 cable to the RS-232 connector on the device, then
connect the other end to the serial port on the other desired device.
Screw-on the power lead from the power supply module into the power connection on the device.
Plug the power supply into your power source.
3. If your device is the USB version:
For information about the USB cable that helps power your device, see the section "USB Cable
Recommendations."
The USB cable uses power from the USB power line. Connect one end of the USB cable to your computer
or other USB high power device, such as a hub.
Connect the other end to the device's USB connector.
4. The POWER LED lights after the device powers up.

INSTALLING AND USING THE DEVICE
14 MultiConnect®Cell MTC-MNK1 User Guide
Placing Serial Devices in Power Save Mode
The serial devices offer a low power mode (sleep or power save mode) using the power save switch (below the
SIM card slot) on the device to change from normal or low power mode. The low power mode is intended for
battery or solar-powered, IoT applications such as outdoor remote sensors.
There are other techniques to place the device into low power mode. This example uses data terminal ready (DTR)
and the AT command +CFUN=5. For other techniques, review the AT command guide for your device, as described
in the Documentation section of this guide.
The device also wakes up from sleep mode by using the wake-on-ring feature. See the following example using the
ring indicator line to wake the host processor when the radio receives an incoming call or SMS message. Your
application then needs to act on the ring indication and wake up the device by asserting DTR.
Using Low Power Mode
Here are some different configuration options for low power mode:
To turn on low power mode, set the power-save switch to LOW.
On the RS-232 interface, ensure your application controls DTR and makes it active (on). To configure the
device for DTR control, issue either AT&D1 or AT&D2 for DTR control. The &D0 command does not allow
low power to operate.
To configure the device to enter low power (sleep) mode, issue AT+CFUN=5 to the radio.
To configure the device to wake from low power mode by using the wake-on-ring feature, issue
AT#E2SMSRI=1000. This configures the ring indicator to go active for 1000 ms when an SMS message is
received.
To have the device enter sleep mode, set DTR to inactive (off) on the RS-232 interface. The clear to send
(CTS) signal is off when the device is in sleep mode.
USB Cable Recommendations
To avoid enumeration or power issues if your device has a USB connector:
Use a high-speed USB cable that is as short as possible.
Use a well-shielded cable with at least 24 AWG wire pair for power/ground and 28 AWG wire pair for data
lines.
If possible, use a USB port that connects directly to the motherboard rather than a USB port with added
cabling inside the computer chassis.
Use USB 3.0 ports if available. These ports are typically rated for more current.
You can order the USB cable through MultiTech. The part number is CA-USB-A-MINI-B-3
Powering Down Your Device
CAUTION: Failing to properly power down the device before removing power may corrupt your device's file
system.
To properly power down your device, use the following sequence :
1. Issue the AT#SHDN command.
2. Wait 30 seconds.
3. Power off or disconnect power.

INSTALLING AND USING THE DEVICE
MultiConnect®Cell MTC-MNK1 User Guide 15
Note: If you send AT#SHDN and do not remove power, the radio restarts after 60 seconds.
Mounting Device to Flat Surface
1. Locate the groove on the bottom of the device.
2. Slide the mounting bracket through the groove.
3. To secure the bracket to the desired surface, place and tighten two screws in the holes on either end of
the mounting bracket. The dimensions illustration in this guide shows the mounting bracket, as well as
the dimensions for placement of the screws.

ANTENNA AND ACTIVATION INFORMATION
16 MultiConnect®Cell MTC-MNK1 User Guide
Chapter 4 – Antenna and Activation Information
Antenna System Cellular Devices
The cellular/wireless performance depends on the implementation and antenna design. The integration of the
antenna system into the product is a critical part of the design process; therefore, it is essential to consider it early
so the performance is not compromised. Devices were approved with the following antenna(s) and for alternate
antennas meeting the given specifications.
Antenna
Devices were approved with the following antenna:
Manufacturer: Art Signal
Description: LTE Full Band Antenna with SMA-Male Connector
Model Number ARTS-MLEM-030
Antenna Specifications
Category Description
Frequency Range 824~960 ±1MHz
1710~2170 ±1MHz
2496~2690 ±1MHz
VSWR 5.5 maximum
Gain -3.5~2.0 dBi
Impedance 50Ω
Radiation Omni-directional
Polarization Linear
Account Activation for Cellular Devices
Some MultiTech devices are pre-configured to operate on a specific cellular network. To use the device, you must
set up a cellular data account with your service provider. Each service provider has its own process for adding
devices to their network.
Device Phone Number
Every device has a unique phone number. Your service provider supplies a phone number when you activate your
account. Wireless service provider implementation may vary. Consult with your service provider to get the phone
number for your device.

CONFIGURING AND COMMUNICATING WITH YOUR DEVICE
MultiConnect®Cell MTC-MNK1 User Guide 17
Chapter 5 – Configuring and Communicating with
Your Device
Before Using the Device
Before using the device:
Install any drivers. Refer to the separate driver installation guide for your device.
Power up your device and ensure it is connected to your computer that issues AT commands.
Note: Wait 10 seconds after power-up before issuing any AT commands.
Install terminal software that can communicate with the device, such as HyperTerminal, Tera Term, Kermit,
or Putty.
For additional information, refer to the AT command guide and any related documentation for your device. The AT
command guide describes command formatting, syntax, and other basic information.
Using Command Mode and Online Data Mode
Modems have two operation modes, command and online data. After power up, the modem is in command mode
and ready to accept AT commands.
Use AT commands to communicate with and configure your modem. These commands establish, read, and modify
device parameters and control how the modem works. The device also generates responses to AT commands that
help determine the modem’s current state.
If the modem is in online data mode, it only accepts the Escape command (+++).
To send the modem AT Commands from terminal emulation software, set the software to match the modem’s
default data format, which is:
Speed: 115,200 bps
Data bits: 8
Parity: none
Stop bit: 1
Flow control: hardware
To confirm communication with the device:
Type AT and press Enter.
If the device responds with OK, it is properly communicating.
Verifying Signal Strength
To verify the device signal strength, enter:
AT+CSQ
The command indicates signal quality, in the form:

CONFIGURING AND COMMUNICATING WITH YOUR DEVICE
18 MultiConnect®Cell MTC-MNK1 User Guide
+CSQ: <rssi>,<sq>
Where:
<rssi> Received signal strength indication.
0(-113) dBm or less
1(-111) dBm
2-30 (-109) dBm - (-53) dBm / 2 dBm per step
31 (-51) dBm or greater
99 Not known or not detectable
<sq> LTE - RSRQ (in dBm):
0-4 to -3
1-6 to -5
2-8 to -7
3-10 to -9
4-13 to -11
5-15 to -14
6-17 to -16
7-19 to -18
99 Not known or not detectable
Note: Signal strength of 10 or higher is needed for successful packet data sessions.
Example
A example response to AT+CSQ:
+CSQ: 15,1
Checking Network Registration
Before establishing a packet data connection, verify the is device registered on the network. To do this enter the
network registration report read command:
AT+CEREG?
If the device returns:
AT+CEREG?: 0,1

CONFIGURING AND COMMUNICATING WITH YOUR DEVICE
MultiConnect®Cell MTC-MNK1 User Guide 19
or
AT+CEREG?: 0,5
The device is registered.
If the device returns:
AT+CEREG?: 0,2
The device is in a network searching state.
Sending and Receiving Data
Connecting Device to TCP Server as TCP Client
1. AT+CGDCONT=1,"IPV4V6","apnname"
where apnname is the APN your cellular provider assigned to your SIM card.
2. Bring up Data Connection Using Internal IP stack
Enter:
Verizon:
AT#SGACT=3,1
Other Networks:
AT#SGACT=1,1
The device responds with the IP Address the cellular provider assigned to the device on connection,
followed by OK. For example:
#SGACT: 25.194.185.116
OK
3. Create Client Connection to TCP Server on Port 500
Enter:
AT#SD=1,0,500,"###.##.###.##"
where ###.##.###.## is the TCP server IP Address.
The device responds with OK. The device can send or receive data now without entering additional
commands.
Closing the Socket and the Connection
To close the socket:
1. Enter the escape sequence:
+++
2. To close Socket 1, enter:
AT#SH=1
To close the data connection:
Enter:
Verizon:
AT#SGACT=3,0
Other Networks:

CONFIGURING AND COMMUNICATING WITH YOUR DEVICE
20 MultiConnect®Cell MTC-MNK1 User Guide
AT#SGACT=1,0
The device responds with OK.
Configuring Device as UDP Listener to Accept UDP Client Connections
To configure the device as a UDP client:
1. Check signal strength.
Enter:
AT+CSQ
2. Verify device is registered on the cellular network.
Enter:
Should return:
+CEREG: 0,1 or +CEREG: 0,5
OK
3. Configure socket parameters
Enter:
AT#SCFG=1,3,300,240,600,50
4. Activate context one
Enter:
Verizon:
AT#SGACT=3,1
Other Networks:
AT#SGACT=1,1
5. Set firewall rule to accept connections:
AT#FRWL=1,"###.##.###.#","###.##.###.#"
where ###.##.###.# represents the IP range. For example:
AT#FRWL=1,"204.26.122.1","204.26.122.255"
6. Set connection ID 1 for UDP listening mode on port 7000.
Enter:
AT#SLUDP=1,1,7000
The device responds with and unsolicited indication that a host is trying to connect to connection ID 1 on
port 7000.
SRING: 1
7. Accept incoming connection ID 1
Enter:
AT#SA=1
The device indicates a client successfully established a listener connection.
CONNECT
The device can send and receive data now.
Exit Data Mode and Close Connection
To exit data mode and close the socket:
1. Enter the escape sequence: