Zoom 4575 User manual

Model 4575/4576 Cellular
Modem
USER MANUAL

NOTICE
This document contains proprietary information protected by copyright, and this Manual and all
the accompanying hardware, software, and documentation are copyrighted. No part of this
document may be photocopied or reproduced by mechanical, electronic, or other means in any
form.
The manufacturer does not warrant that the hardware will work properly in all environments and
applications, and makes no warranty or representation, either expressed or implied, with respect
to the quality, performance, merchantability, or fitness for a particular purpose of the software or
documentation. The manufacturer reserves the right to make changes to the hardware, software,
and documentation without obligation to notify any person or organization of the revision or
change.
All brand and product names are the trademarks of their respective owners.
© Copyright 2016 Zoom Telephonics, Inc.
All rights reserved.

2

CONTENTS

GETTING STARTED 4
INSTALLING THE ZOOMCELL MODEM 8
InstallingyourHardware .................................................................................................................... 8
USING THE MODEM WITH DIFFERENT OS’S 11
UsingtheModeminWindowsbasedmachines ............................................................................... 11
UsingtheModeminLinuxorAndroidbasedDevices ....................................................................... 14
ESTABLISHING A DATA CONNECTION 17
ChoosingHowtoEstablishyourDataConnection ............................................................................ 17
USING SMS MESSAGING 23
TextvsPDUModes............................................................................................................................ 23
UsingTextModetoSendSMSMessages.......................................................................................... 24
UsingPDUModetoSendSMSMessages ......................................................................................... 24
ReceivinganSMSMessage............................................................................................................... 35
DeletingaTextMessagefromMemory............................................................................................ 36
USING GPS 38
GPSvsAssistedGPSMode................................................................................................................ 38
XTRAOneMode................................................................................................................................. 39
GPSvsGNSSPositioning ................................................................................................................... 39
PositioningDatavsNMEAData........................................................................................................ 39
SettingtheModemupforGPS ......................................................................................................... 40
UsingStandaloneGPS....................................................................................................................... 41
UsingAssistedGPS............................................................................................................................ 42
UsingNMEAData ............................................................................................................................. 44
USING THE MODEM’S HEADER 45
SerialPortLines ................................................................................................................................47
PowerLines....................................................................................................................................... 48
USBLines .......................................................................................................................................... 48
GPIOLines......................................................................................................................................... 48
PowerandResetLines ...................................................................................................................... 49
SleepModeLines .............................................................................................................................. 49
HARDWARE SPECIFICATIONS 50
APPENDIX A: MODEM LEDS 53
APPENDIX B: IF YOU NEED HELP 54
APPENDIX C: COMPLIANCE 55
3

1
Getting Started
This manual is for Zoom model 4575 and its uncased version, model 4576. These
ZoomCelltm modems use the Huawei MU609 LGA module and have a top downstream
speed of 14.4 Mbps. The cased model comes in a rugged aluminum case and includes a
power cube, 3 antennas (main, diversity, and GPS), and a printed Quick Start. The
cased model is normally your best choice for initial test and use of the MU609-based
modem, and the cased model may be a good choice for integration into a particular
system. Because the uncased model is designed for lower cost and volume applications,
it does not come with a power cube or antennas.
The Quick Start section below repeats much of the information in the Quick Start flyer of
Zoom Models 4575 and 4576. The Table of Contents shows interesting topics covered in
this manual.
For details about Model 4575 and 4576 hardware, including power specifications and
details about the modem’s input/output ports, please see the Model 4575 datasheet at
www.zoomtel.com/4575.
Because Model 4575 and 4576 use the PTCRB certified Huawei MU609 LGA module,
you can also find a lot of useful information from Huawei’s documentation, including
information about the command set for controlling Models 4575 and 4576. A link to this
documentation is available at www.zoomtel.com/4575support .
Quick Start
This Quick Start describes how to plug a micro SIM card into the SIM slot of the modem,
connect the antennas, power up the modem, and then use the USB port of a Windows
computer to connect to the Internet. It is intended as an example to get you up and using
the modem quickly. If you do not want to try this you can skip this section. There are
many other ways to use the modem, and these are described in the following chapters.
4

Figure 1

Plugging a micro SIM into the micro SIM slot of the modem
First unscrew and remove the case’s SIM cover (Model 4575 only). Plug in a micro SIM
at the location shown in Figure 1. The micro SIM can be obtained from AT&T or another
modem-compatible service provider. After the micro SIM is in place, model 4575 users
should put the SIM cover back in place and screw it in.
Connecting the antennas
Before installing your cellular antennas, you must first screw the two metal antenna
wires into the antenna bases. Next, screw the 2 antennas into the SMA connectors
labeled Main and Aux as shown in Figure 1. If your unit did not come with cellular
antennas or if you want to use your own cellular antennas, they should meet the
specifications shown in Chapter 8 Hardware Specification. If you are using GPS, screw
the GPS antenna into the GPS SMA connector.
Connecting the power cube to the modem
If your modem comes with a power cube, you can plug that between a wall outlet and the
Power connector shown in Figure 1.
5

You also have the option of supplying power for the modem using the Modem’s header.
If you prefer to use the modem’s header, DON”T USE THE POWER CUBE AT THE
SAME TIME. For more information about using the modem’s header to power the
modem, please see Chapter 7 - Using the Modem’s Header for more information.
Connecting the Modem to the Internet using a Windows Computer
In this example we install a USB driver onto a Windows 7, 8, or 10 computer, then use
dial-up networking to connect to the Internet. When connected this way, the modem uses
the Windows built-in protocol stack and not the TCP/IP stack built into the modem.
This section is intended to be used as an example to let you use the modem quickly. If
you do not want to install the modem in Windows, you can skip ahead to Chapter 2 for
more detailed instruction for installing your modem.
Installing the Windows USB Driver
1Download the Windows USB driver for your modem from
www.zoomtel.com/4575support. Unzip the file and store it in a folder on your
desktop.
2Inside that folder, double click on DriverInstall.exe to install the USB driver. The
driver installs in the background in roughly 30 seconds. If the This program
might not have installed correctly dialog box appears, you can ignore this
message and click This program installed correctly.
3Plug one end of a USB cable into the USB port of your computer and plug the
other end of the cable into your modem’s USB port.
Setting up the Modem for your Network
Before you can connect to the Internet through Windows, you will need to register your
modem with your cellular network. To do this, open up a terminal program on your
computer to talk directly to your modem. If you do not have a terminal program on your
PC, there are several open source programs such as Tera Term, Putty, or RealTerm that
you can download and use if you obey their terms of use.
1To check what port your modem is installed on, go to the Control Panel, click on
Phone and Modem, and select the Modem tab. The modem will be installed as
a Huawei Mobile Connect Modem and the com port number will be listed next
to the modem.
6

2Set your terminal program to use this com port number and set the serial port to
460,800 bps.
3To register your modem, enter the command AT+CGDCONT=1,“ IP”, “<APN>”
Where <APN> is the Access Point Name associated with your SIM card. For
example to register on an AT&T network using the AT&T APN Broadband you
enter the following command.
AT+CGDCONT=1,”IP”,”Broadband”
The terminal program should then show OK as the modem’s response.
4Next, check that the modem is attached by entering the command AT+CGATT?
The modem should respond:
+CGATT: 1
OK
5If the modem responds with +CGATT: 0, then it is not attached to the network
and you must manually attach it by entering the command AT+CGATT=1.
Connecting to the Internet
1To connect to the Internet, you need to set up a Dial-up connection. To setup a
connection, follow the steps for your OS.
Window 7: Go to the Control Panel / Network and Sharing Center and click on
Setup a New Connection.
Windows 8.1/8: From the charms bar, select Settings / Control Panel / Network
and Sharing Center and click on Setup a New Connection.
Windows 10: From the Start button, select Settings / Network and Internet /
Dial-up then click on Setup a New Connection.
2Follow the prompts to set up your new dial-up connection. When you come to the
screen that asks you to enter the phone number, user name, and password,
enter *99# as the phone number and leave the user name and password boxes
empty.
3Click Connect to connect to the Internet. Once connected, you may open your
browser and go to a familiar Web site. If it works, Congratulations! Your
Installation is complete. If your modem is NOT working please see Appendix B - If
You Need Help.
7

2
Installing the ZoomCell Modem
Chapter 1 provided a quick example to allow you to test the modem using Windows
dial-up networking. This chapter includes more detailed information for using the modem
with either the serial port or USB port, and provides information for using different
Operating Systems with the modem.
Installing your Hardware

If you have not yet installed your hardware by either following the steps in the quick start
or in Chapter 1, please follow the steps below.

Plugging a micro SIM into the micro SIM slot of the modem
ZoomCell Modems use a 3FF SIM card, which is typically called a micro SIM. The
modem supports 1.8v and 3.0v SIM cards and will automatically detect which type you
are using. If you plan to use your modem in extreme temperature conditions, we
recommend that you get a SIM card rated for industrial temperatures.
Compatible SIM cards can be obtained from either AT&T, T-Mobile or other providers
that offer service compatible with your ZoomCell modem. For a list of compatible
providers please see www.zoomtel.com/m2mproviders.
To install your SIM card, first unscrew and remove the case’s SIM cover (Model 4575
only). Plug in a micro SIM at the location shown in Figure 1. After the micro SIM is in
place, model 4575 users should put the SIM cover back in place and screw it in.
8

Connecting the antennas
Ifyourmodelshippedwith2cellularantennasyoushouldassembletheantennasbyscrewing
thelongmetalwireintothebase.Youshouldinstallthoseantennasorsuitablealternative
antennasintotheSMAconnectorslabeledMainandAuxshownin

your unit did not come with cellular antennas or if you want to use your own cellular
SMA
Comment
If
antennas, they should meet the specifications shown in Table 1 – Antenna
Specifications. If you are using GPS, screw the GPS antenna into the GPS
connector.
MainandDiversityAntenna
SpecificationRequirement
Frequencies
supported
850MhzBand(824‐894MHz)enciescoverallpossible
.If900MhzBand(880‐960MHz)
1800MhzBand(1710‐1879MHz)
1900MhzBand(1850‐1990MHz)
2100MHzBand(1920–1980and
2110‐2170MHz)
Thesefrequ
frequenciessupportedbythemodem
youaresureyouarenotusingcertain
frequencies,thenyoumayomitthem
whenselectingyourantenna.
Gain≤2.5dBi
PolarizationVertical
Radiation
Pattern
Omni‐directional
Impedance50Ω 
VSWR≤2:1
Antenna≥
Efficiency
≥50%Canbe 40%forlessthan960MHZ,
≥50%forgreaterthan1710MHz

GPSAntenna
SpecificationRequirement
Frequenciessupported1574.42 MHz–1576.42 MHz
PolarizationRHCP(Right‐HandCircularPolarization)
RadiationPatternreDirectional,pointtotheupperhemisphe
Impedance50Ω
VSWR≤1.5:1
AntennaEfficiencyrboththeefficiencyandtheupperhemisphereefficiency≥50%fo
Table 1 – Antenna Specifications
Connecting the power cube to the modem
9

If your modem comes with a power cube, you can plug that between a wall outlet and the
power for the modem using the Modem’s header.
Power connector shown in Figure 1.
ou also have the option of supplyingY
If you prefer to use the modem’s header, DON”T USE THE POWER CUBE AT THE
SAME TIME. For more information about using the modem’s header to power the
modem, please see Chapter 7 - Using the Modem’s Header for more information.
10

3
Using the Modem with Different OS’s
Now that your modem is installed we will walk you through using both the serial port
and USB port in a Windows, Linux, or Android based systems.
If you want to learn how to use your modem in Windows, go to Using your Modem in
Windows based machines.
If you want to learn how to use your modem with Linux or Android, go to Using your
Modem in Linux or Android based devices.

Using the Modem in Windows based machines

Windows users can use either the serial port or USB port to talk to the modem. Continue
below to learn about using the serial port in Windows or go to Using the USB port with
Windows based machines to learn how to use the USB port with Windows.
Using the Serial port with Windows based computers
If you have not already plugged in a serial cable between your windows device and the
modem, please do that now. If you want to use the modem’s header to access the serial
port please see Chapter 7 Using the Modem’s Header .
To talk to the modem you typically set your com port speed to the modem’s default
speed of 115200 bps. If your application requires the modem to use a different serial
port speed, you will need to set the modem up to use this speed. Changing the serial
port speed is done using the AT+IPR command. The format of the AT+IPR command is:
AT+IPR=<speed>
Where <speed> is the desired serial port speed in bps. Available speeds are 300, 600,
11

1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, or 230400. More detailed
information on the AT+IPR command can be found in the Huawei AT Command manual.
This manual is available at www.zoomtel.com/4575support.
To send the command you may need to download a terminal program for Windows. If
you do not have a terminal program on your PC, there are several open source programs
such as Tera Term, Putty, or RealTerm that you can download and use if you obey their
terms of use. Remember that after you send the AT+IPR command to change the serial
port speed, you will need to change the serial port speed of your terminal program to
continue to talk to the modem.
Many applications will access the modem by directly talking to the com port where the
modem is installed. However, if you are using Windows dial-up networking and the
ZoomCell modem, you will need to download an INF file for dial-up networking to talk to
the modem. If you need an INF file to make dial-up networking work, you can download
one from www.zoomtel.com/4575support.
Using the USB port with Windows based machines
To use the modem’s USB port for Windows computers, you must first install the USB
driver
Installing the USB Driver
1Download the Windows USB driver for your modem from
www.zoomtel.com/4575support. Unzip the file and store it in a folder on your
desktop.
2Inside that folder, double click on DriverInstall.exe to install the USB driver. The
driver installs in the background in roughly 30 seconds. If the This program
might not have installed correctly dialog box appears, you can ignore this
message and click This program installed correctly.
3Plug one end of the USB cable into the USB port of your computer and plug the
other end of the cable into your modem’s USB port.
Using the USB Ports
When the modem installs the driver, you may notice that 6 virtual USB ports are now
installed on your computer. Selecting which port you should use depends on your
application. In Chapter 1, we gave the example of using Dial-up networking to connect
12

the modem to the Internet. Dial-up Networking uses the 3G Modem port described
below to make this connection. The ports and their common uses are explained below.
The Modem port is labelled Huawei Mobile Connect – 3G Modem. It is used for
general purpose control and monitoring of the modem. You can send AT commands,
receive unsolicited messages, and establish a connection on this port. To find the actual
port number go to the Control Panel and click on Phone and Modem and select the
Modem tab. The modem will be installed as a Huawei Mobile Connect Modem and the
com port number will be listed next to the modem.
The port labelled Huawei Mobile Connect – 3G Network Card port is an ECM
(Ethernet Control Model) port and is used when you want to send Ethernet over USB.
For more information about creating ECM connections, please see the Huawei MU609
Application Guide. This guide is available from www.zoomtel.com/4575support. To find
the USB port number for this port, go to Device Manager and look at Network
Adapters.
The port labelled Huawei Mobile Connect – 3G PCUI port is used to send AT
commands to the modem. This port can be used to control the modem using AT
commands and to monitor the status of the modem when using the ECM port. To find the
USB port number for this port, go to Device Manager and look at Ports.
The port labelled Huawei Mobile Connect – Control Interface is used for GPS AT
command interaction as well as receiving positioning data back from the modem. If you
want to receive NMEA positioning data, use the Huawei Mobile Connect – 3G GPS
Interface port. The 3G GPS Interface port only reports data, and no AT commands are
accepted. For more information about using the modem’s built-in GPS features, please
see Chapter 5 - Using GPS. The USB port numbers for these two ports are listed in
Device Manager under Ports.
The port labelled Huawei Mobile Connect – 3G Application port is reserved.
You may connect to multiple ports at once depending on your application. For example if
you are using the GPS functionality of the modem, you may be receiving this data on the
Control Interface and 3G GPS Interface ports. You may then be reporting this data
back to a server over either the 3G Modem or 3G Network Card ports.
•To learn how to establish a data connection using either your application’s
protocol stack or the modem’s built-in IP stack, refer to Chapter 4 – Establishing a
Data Connection.
•To learn how to use your modem with SMS messaging, refer to Chapter 5 –
13

Using SMS Messaging .
•To learn how to use your modem for GPS, refer to Chapter 6 – Using GPS.
•To learn about your modem’s header, refer to Chapter 7 – Using the Modem’s
Header.
Using the Modem in Linux or Android based Devices
Linux and Android users can use either the serial port or USB port to talk to the modem.
Continue below to learn about using the serial port, or go to Using the USB port with
Linux or Android to learn how to install and use the USB port in Linux or Android based
systems..
Using the Serial port with Linux or Android
If you have not already plugged in a serial cable between your windows device and the
modem go ahead and do that now. If you want to use the modem’s header to access the
serial port, please see Chapter 7 Using the Modem’s Header.
To talk to the modem you typically set your com port speed to the modem’s default
speed of 115200 bps. If your application requires the modem to use a different serial
port speed, you will need to set the modem up to use this speed. Changing the serial
port speed is done using the AT+IPR command. The format of the AT+IPR command is:
AT+IPR=<speed>
Where <speed> is the desired serial port speed in bps. Available speeds are 300, 600,
1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, or 230400. More detailed
information on the AT+IPR command can be found in the Huawei AT Command manual.
This manual is available at www.zoomtel.com/4575support.
To send the command, you can use the Linux console or download an open source
terminal program. Remember that after you send that AT+IPR command to change the
serial port speed, you will need to change the serial port speed of your terminal program
to continue to talk to the modem.
14

Using the USB port with Linux or Android
To use the modem’s USB port, you must first decide which driver you will need to modify.
This decision depends on both your application and the kernel version that your
application is built on. There are three different drivers that the modem uses: the USB
Serial driver, the CDC-ECM driver and the CDC-MBIM driver.
If you are using kernel 2.6.12 – 2.6.21 then only the USB Serial driver is supported. The
USB Serial driver provides the following ports:
Modem Port:General purpose port used for interaction between the system and the
module. PPP dial-up connections are created over this port.
PCUI Port: Used to send AT commands to the modem.
DIAG Port: This port is reserved.
GPS Control Port: Used to send GPS commands to the modem.
GPS Interface Port: Used to send out detailed GPS NMEA information.
If you are using Kernel version 2.6.22 – 3.8 you can use the CDC ECM driver or the
USB Serial driver. The CDC ECM driver allows you to send Ethernet over USB.
If you are using Kernel 3.9 or later you can use the CDC-MBIM driver, the CDC-ECM
driver, or the USB serial driver. The CDC-MBIM (Mobile Broadband Interface Module) is
an interface that was specifically designed for mobile broadband devices.
To find more information about modifying the built-in Linux drivers to make them work in
your system, please download the Huawei application note Guide to Kernel Driver
Integration in Linux for Huawei Modules. You can find this documentation by going to
www.zoomtel.com/4575support.
Integrating the Radio Interface Layer with Android based Systems
Android based OS’s communicate with the modem through the Huawei Radio Interface
Layer (RIL). The RIL converts generic requests from Android’s RIL Daemon (RILD) into
specific AT commands used by the modem. To learn how to integrate the RIL into your
Android system, see the Huawei application note Huawei Module Android RIL
Integration Guide. This guide along with the Huawei RIL, are available from
www.zoomtel.com/4575support.
15

•To learn how to establish a data connection using either your application’s
protocol stack or the modem’s built-in IP stack, refer to Chapter 4 – Establishing a
Data Connection.
•To learn how to use your modem with SMS messaging, refer to Chapter 5 –
Using SMS Messaging .
•To learn how to use your modem for GPS, refer to Chapter 6 – Using GPS.
•To learn about your modem’s header, refer to Chapter 7 – Using the Modem’s
Header.
16

4
Establishing a Data Connection
This chapter explains how to establish a data connection using either an external
protocol stack, the modem’s internal protocol stack, or an ECM connection with your
modem.
Much of the information contained in this chapter is detailed in the Huawei MU609
HSPA LGA Module Application Guide. This guide can be found by going to
www.zoomtel.com/4575suppport. We strongly recommend that you review this guide as
it walks you through setting up your modem in several common applications.
Choosing How to Establish your Data Connection

Deciding how to establish your data connection depends on how you physically connect
your modem to your system as well as the capabilities of your system. The modem
supports three methods of establishing a data connection: using an external protocol
stack that is running on your application, using the modem’s internal protocol stack, or
using ECM dialing.
If you are connected to the modem with a serial port either through the modem’s DE-9
connector or through the modem’s header, you can establish a data connection by using
either an external protocol stack or the modem’s internal protocol stack. You may want
to use the external protocol stack if your application already supports TCP/IP/UDP or if
this support can be easily added. Use the modem’s internal protocol stack if your
application does not support TCP/IP/UDP and this support is difficult to add. To learn
how to connect using an external protocol stack, go to Using an External Protocol Stack
to Establish a Data Connection below. To learn how to connect using the modem’s
internal protocol stack, go to Using the Modem’s Internal Protocol Stack to Establish a
Data Connection.
If you are using the USB port, either though the modem’s micro USB connector or
through the modem’s header, you can connect using an external protocol stack through
the USB Modem port, or by using ECM dialing on the ECM port. The ECM port is
17

described in chapter 3. To learn how to connect using an external protocol stack, go to
Using an External Protocol Stack to Establish a Data Connection. To learn how to
connect with ECM dialing, go to Connecting with ECM Dialing.
Using an External Protocol Stack to Establish a Data Connection
To establish a connection using the protocol stack that resides on your system is a
2-step process. The first step is to register the modem with your cellular network. To
register your modem, enter the command AT+CGDCONT=1,”IP”,”APN”. Where APN
is the APN associated with your SIM card. For example to register on an AT&T network
using the AT&T APN Broadband you enter the following command.
AT+CGDCONT=1,”IP”,”Broadband”
The modem should respond OK.
Next, verify that the modem is registered and attached by entering the command
AT+CGATT?
The modem should respond:
+CGATT: 1
OK
If the modem responds with +CGATT: 0, then it is not attached to the network and you
must manually attach it by entering the command AT+CGATT=1
Once your modem is registered it will stay registered so you do not need to repeat this
step each time you establish a data connection. To unregister your modem enter:
AT+CGDCONT=1
Now that your modem is registered you can go ahead and establish your data
connection. To establish your data connection enter:
ATD*99#
The modem responds with a connect message. Most cell providers use *99# as their
dial number, however your provider may require you to use a different number.
18

Using the Modem’s Internal Protocol Stack to Establish a Data Connection
To send data using the modem’s internal protocol stack, you must be connected to the
modem’s serial port, either through the DE-9 connector or the modem’s header. The
internal protocol stack does not work over the USB connection.
To establish the connection, you must first register the modem on the network for an IP
connection. When using the internal stack you must register the modem every time the
modem powers off or resets itself. To register enter the command:
AT^IPINIT=”<apn>”
Where apn, is the apn of your service provider. For example if you were using the
default AT&T apn of broadband, the command would be
AT^IPINIT=”broadband”
If the modem is already registered, the modem will respond as follows:
+CME ERROR: The network has been opened already
To check that the modem is registered, and to find out the modem’s IP address, enter
the following command:
AT^IPINIT?
The modem responds with:
^IPINIT: 1, “10.56.134.128”, “broadband”, “172.26.38.1”, “172.26.38.2”
Where 10.56.134.128 is the IP address of the modem, broadband is the APN, and the
last 2 IP addresses are the primary and secondary DNS addresses.
What you do next depends on whether you want to send data or receive it. You can set
the modem to listen for data at the same time you are sending data. To learn how to
receive data on your modem, go to Receiving Data on your Modem. To learn how to
send data, go to Sending Data with your Modem.
Receiving Data on your Modem
Receiving data on your modem is done by setting up a listening server. A listening
server can look for either TCP or UDP data on your modem. The listening server can
19

only look for one type of data at a time. To set up a listening server using UDP, enter the
following command:
AT^IPLISTEN=”UDP”, 5008
In this example the modem will monitor UDP port 5008 for data. If it receives data, it
responds with the ^IPDATA command. When data appears, the modem will signal the
host as follows:
^IPDATA: 3, 8, testdata
In this example 3 represents the link ID, which can be from 1-5; 8 is the number of
characters in the data, and testdata is the actual data that was sent. The number of
characters sent can range from 1 to 1500.
If the listening server is already running, the modem will respond as follows:
+CME ERROR: The server has been established already
To set up a listening server for TCP data, enter the following command:
AT^IPLISTEN=”TCP”, 6010
In this example, the modem is monitoring port 6010 for TCP data. For more information
about the AT^IPLISTEN command, please refer to the Huawei AT Command manual
available at www.zoomtel.com/4575support.
Sending Data with your Modem
Before you send data, you need to open up the connection using the ^IPOPEN
command. You can open up to 5 different connections at a time. For example, you open
a TCP and UDP connection to your server by entering the following commands:
AT^IPOPEN=1,”UDP”,”WWW.MYSERVER.COM/DATA”, 5005, 5010
AT^IPOPEN=2,”TCP”,”WWW.MYSERVER.COM/DATA”, 5005, 5010
In this command 1is the link id for the UDP connection and 2is the link id for the TCP
connection. WWW.MYSERVER.COM/DATA is the address of your server where you
20