Ozeki 4G LTE SMS Modem - Dual SIM

Introducing the Ozeki 4G LTE SMS Modem - Dual SIM edition. This high tech sms communication device enables you to take advantage of two SIM cards providing two mobile phone numbers. This modem is best if you are transitioning from your old number to a new one or if you simply want to use two phone numbers as two communication channels.

Brand Name

Ozeki 4G LTE SMS Modem - Dual SIM

Model

Dual Sim, Small FF, Dual Antenna, Rev 2.02

Modem description

This modem is built by Ozeki. It is based on the Qualcomm Snapdragon chipset. The modem connects to the USB port of your computer. This is a single modem with dual sim support. It connects to the mobile number with one IMEI number.

This modem model is very reliable and operates on 4G LTE mobile networks, so it is future proof. The modem offers native SMS communication in PDU mode. It can be used to send SMS and receive SMS messages and to handle USSD messages properly. The modem support SMS delivery reports.

Connections

The modem communicates with the PC over a USB3.0 connection. It is compatible with Ozeki SMS Gateway. It will be recognized as a single modem and dual SIM support needs to be enabled on the configuration form. Please check out the How to setup the Ozeki Dual SIM SMS modem guide for instructions on how to enable Dual SIM support.

This modem requires an independent power source. It can be powered using a USB charger or from a standard USB port using a standard USB C connector. It can also be powered with an external power supply (Note: no external power supply is included in the package)

Physical appearance

The modem comes in a black alimuminium case with mounting holes. It provides 4 SMA antenna connectors (4 GSM antennas are included in the package).

Package contents

The package inclukdes the modem itself, 4 antennas, a USB C cable for powering the device from a USB port or USB power adapter and a USB 3.0 cable for connecting the device to the PC.

SIM card slot

The modem supports both 6 pin and 8 pin SIM cards. The supported sim card is the standard 25mm x 15mm size SIM. This is also often called as 2FF sim card form. The modem support 5V, 3V and 1.8V SIM cards. Note, that the SIM card is not part of the package. If you send SMS messages with this modem, you need to purchase a SIM card from your local mobile network operator. You cannot use the modem without a SIM card. The modem does not contain any operator locks.

When you purchase a SIM card from a mobile network, you need to "prepare" it for use. We recommend you to put it in a standard mobile phone first, and get it to activate on the network. Following this disable any PIN codes that is enabled on the SIM, and if you primarily want to send SMS messages, we recommend you to divert voice calls to another number.

Supported operating systems

These GSM modems work reliably on the following operating systems:

• Windows 11
• Windows 10
• Windows Server 2022
• Windows Server 2019
• Ubuntu 22.04
• Ubuntu 23.04

When you connect this modem to a Linux computer, you don't need to install any additional dirver software. The modem will show up as an USB serial port. You will find it under /dev/ttyUSB. Note, that on Ubuntu Linux and most other modern Linux distributions, the ModemManager of Linux will automatically recognize and take over the control of this modem. If you wish to use this modem with Ozeki SMS Gateway for Linux, you need to disable the modem manager using the following commands:

systemctl stop ModemManager
systemctl disable ModemManager

Dual SIM operation

Please note, that this is a single Dual SIM modem. It is not two modems in one case. The modem will show up as a single device in Windows device manager. It will offer one COM port. On Linux it will offer one /dev/ttyUSB port. Just like any other dual SIM mobile phone, there is only a single radio circuit. The two SIM cards are served in a so called "switching mode", which means that at any given point only one SIM card can accesses the mobile network. When Ozeki SMS gateway sends out an SMS on this device it determines which SIM to use based on the sender ID, and switches to that SIM card and sends out the SMS.

COM port for AT commands

The Ozeki SMS Gateway communicates with this modem using standard modem AT commands used for SMS messaging. These AT commands are sent through a COM port. When the device is plugged into a PC, it will show up as a COM port in the Windows Device manager or a (/dev/ttyUSB port in Linux). To be able to send and receive SMS text messages, you need to select this port in Ozeki SMS Gateway.

AT command set

The modem is based on Sierra Wireless Airprime technology, and supports the corresponding AT command set. The full AT command interface guide can be downloade from the following URL:

Sierra_AT_Command_Interface_Guide_7.47.pdf

Specifications

Manufacturer	Ozeki Ltd.
Brand Name	Ozeki 4G LTE SMS Modem
Model	Single Sim, Small FF, Dual Antenna, Rev 2.02
Board	Sierra Wireless Airprime
Chipset	Qualcomm MDM9230 4G
Form Factor	M.2 (NGFF)
Dimensions	162*147*35 mm
Weight	612g
Colour	Black
SIM cards	SIM 6pin/8pin card interface
Technologies	GSM, GPRS, UMTS, EDGE, HSDPA, HSPA+, LTE, DC-HSPA
Operating System	Windows 11, Windows 10, Windows Server 2022, Windows Server 2019, Windows Server 2016
Guaranteed software updates until	one year
Maximum Upload Speed	50 Mbps
Maximum Download Speed	100 Mbps
GSM Bands	850, 900, 1800, 1900 MHz
WCDMA Bands	B1 (2100), B2 (1900 PCS), B3 (1800 DCS), B4 (AWS-1700), B5 (850), B8 (900 GSM)
LTE Bands	B1 (2100), B2 (1900 PCS), B3 (1800+), B4 (AWS-1), B5 (850), B7 (2600), B12 (700 a), B13 (700 c), B20 (800 DD), B25 (1900+), B26 (850+), B29 (700 d), B30 (2300 WCS), B41 (TD 2600+)
Interfaces	ADC, I2C, SIM, SPI, UART, USB
GPS Support	Yes
GNSS Support	Yes
Voice Support	No
Automotive Support	No
Temperature	-40 C to 85 C
Are Batteries Included	No
Ozeki 4G/5G ModemDriver Installer	Available after product registration on https://myozeki.com
Carriers	AT&T, Rogers, Sprint, Telus, Verizon Wireless, Vodafone, Others (the modem is not locked to any carrier)
Certifications	CE, CE RED, FCC, GCF, IC, PTCRB

Connectors

The modem has various connectors and indicator leds. The front side contains the USB ports and 4 leds to indicate power supply status and GSM network registration. The back side contains the antennas and the SIM card slots.

What's inside

This GSM modem consists of a large single PCB board, that hosts the SIM cards, the actual GSM module and the USB connectors and indication leds.

More information

• Ozeki 4G LTE SMS Modem
• Ozeki Dual Sim 4G GSM SMS Modem
• Ozeki Hardware SMS Gateway
• Ozeki SMS Gateway PLC
• Price list
• Other