TECHSHIP IS A GLOBAL SUPPLIER OF WIRELESS COMPONENTS
The Sierra Wireless EM7305 Embedded Module is an M.2 modem that provides LTE, DC-HSPA+, HSPA+, HSDPA, HSUPA, WCDMA, GSM, GPRS, EDGE, and GNSS connectivity for notebook, ultrabook, and tablet computers over several radio frequency bands. The device also supports 2G / 3G roaming.
This datasheet shows an comparison overview of the EM-series cellular modules from Sierra Wireless.
This document contains the Linux SDK application guide.
This guide describes the process of acquiring regulatory and operator required certificates in North America
Mobile devices using 3G and LTE are equipped with a second receive antenna for improved performance.
This second antenna is required for receive diversity and MIMO.
These concepts, with their associated benefits, requirements and test possibilities, are described in this Application Note in a Q&A format.
This manual describes the Sierra Wireless Image Switching M2M Developers Guide.
This manual describes the Standard AT commands for User Equipment according to the 3GPP TS 27.007 standard
(version 15.4.0 Release 15)
For manual on proprietary model specific extended AT commands please refer to download section of product page.
This document provides full description of AT commands for Sierra Wireless AirPrime wireless modules and AirLink Programmable Gateways.
Please refer to the specific Sierra Wireless module AT Command Reference document for list of supported AT commands.
This document describes supported standard and proprietary AT
commands available for Sierra Wireless AirPrime ® Mini Card (MC)
and Embedded Module (EM) products, and provides details where
commands vary from the standards.
This archive contains the Sierra Wireless EM/MC73 series certificates archive
MC7354 IC, NCC, FCC
EM7305 FCC, CE
EM7355 IC, NCC
Microsoft Windows desktop driver installer application for Sierra Wireless AirPrime EM/MC series.
This zip archive contains the Sierra Wireless Linux QMI SDK files:
Linux QMI SDK Full Version
Linux QMI SDK Lite Version
Linux QMI SDK Customer Release Note
Sierra Linux QMI drivers
Linux QMI SDK Application Developers Guide
Linux QMI Drivers - Customer Release Notes
This ZIP archive contains the Sierra Wireless Linux QMI drivers with manual and release notes.
In the Application Developers Guide you find instructions on how to install the drivers.
Linux QMI GobiNet and GobiSerial Drivers - Customer Release Notes
Linux QMI SDK Application Developers Guide.pdf
Sierra Linux QMI drivers
This archive contains the Sierra Wireless Android RIL library with related manuals and release notes.
Connection manager to connect AirPrime EM/MC Series modules to your PC running Windows. Please install USB drivers as mentioned in the related items.
This executable file install the Windows drivers for Sierra Wireless EM/MC Series cellular modules
This executable file install the Windows drivers for Sierra Wireless EM/MC Series Modules
This is a watcher for Sierra WIreless.
It is generic and works for both dip and qmi.
This archive contains the Sierra Wireless EM/MC73 Series GPS 2019 Week Roll-over NV Memory Firmware Update Patch as well as notice document.
These documents describe the Sierra Wireless MC73xx-SWI9X15C 05 series firmwares change notes
One click executable application file for updating the Sierra Wireless modules firmware in Windows.
The Linux firmware update files (.cwe, .nvu, or .spk)can be acquired by extracting/unzip this Windows executable file with e.g. 7-Zip or similar software.
How to step by step set up a data connection over QMI interface using qmicli and in-kernel driver qmi_wwan in Linux?
Several cellular modules based on Qualcomm chipsets implements the Qualcomm Qualcomm MSM (QMI) Interface.
There is a open source Linux in-kernel driver supporting this interface and it is called qmi_wwan. This driver can be used together with ModemManager and NetworkManager to automate connection establishment and as a connection manager.
The library libqmi which ModemManager uses can also be used to communicate in a more direct way with the cellular devices over the QMI interface and to step by step do necessary configurations and trigger the data connection over the cellular network.
A selection of cellular modules can be supported:
Using RAW IP kernel configuration:
Sierra Wireless MC74 series, EM74 series, EM75** series
Telit LM940, LM960
Telit LN94x series (requires USB mode switch)
Simcom SIM7500 series, SIM7600 series, SIM7600 -H series
(can be supported in qmi_wwan driver from kernel 4.18 or by applying the following one line qmi_wwan source code patch on previous kernel builds: qmi_wwan: apply SET_DTR quirk to the SIMCOM shared device ID)
Using 802.3 IP framing kernel configuration:
Simcom SIM7100 series
Sierra Wireless MC73**/EM73** series
ModemManager combined with NetworkManager will detect the cellular modules automatically in most cases, please refer to their respective documentations on how to establish a data connection using them.
Example on how to set up the data connection step by step manually with libqmi:
First install the libqmi Linux library e.g. by using your system package manager like apt or preferably latest version from source on the Freedesktop pages for libqmi project: https://www.freedesktop.org/wiki/Software/libqmi/
Verify that you have the Linux in-kernel qmi_wwan driver installed and attached for the cellular modules QMI interface over USB:
Can look e.g. like this:
|__ Port 1: Dev 3, If 2, Class=Vendor Specific Class, Driver=qmi_wwan, 480M
If the driver is not correctly loaded, please verify that the module is set to expose the correct USB endpoints configuration toward the host system and that you have followed the provided guides from the cellular module vendors, regarding how to implement the module in Linux.
Libqmi expose a command line interface that can be used to communication with the module over QMI interface.
The qmicli help will output information about all commands available:
The cellular modules QMI control interface are usually named cdc-wdm* e.g.:
In order to allow parallel commands to be execute on the module over QMI interface, it is recommended to use the libqmi proxy function. This can be done by including the attribute -p or --device-open-proxy in every qmicli command.
If a SIM pin is required for the SIM card, use command bellow:
qmicli --device=/dev/cdc-wdm0 -p --dms-uim-verify-pin=PIN,1234
The name of the related network interface to QMI control channel can be acquired with the command:
qmicli --device=/dev/cdc-wdm0 --device-open-proxy --get-wwan-iface
The most recent Qualcomm based cellular modules only expose QMI interfaces that can support Raw-IP mode. Sierra Wireless EM/MC74 and EM75 series modules, Telit LM940 and LN940 series for example require this.
Check what IP-mode the host system is configured for:
qmicli --device=/dev/cdc-wdm0 --get-expected-data-format
Check what IP-mode the cellular module require:
qmicli --device=/dev/cdc-wdm0 --device-open-proxy --wda-get-data-format
to change qmi_wwan driver to use Raw-IP.
Disable the network interfaces exposed by the cellular module:
ip link set dev wwan0 down
Trigger the Raw-IP support:
echo Y > /sys/class/net/wwan0/qmi/raw_ip
Enable the network interfaces again:
ip link set dev wwan0 up
Now the data connection in the cellular module can be activated e.g. with a IPv4 type configuration on the specified APN:
qmicli --device=/dev/cdc-wdm0 --device-open-proxy --wds-start-network="ip-type=4,apn=data.tre.se" --client-no-release-cid
Once "Network started" is displayed, you can send a DHCP request on the network interface.
Please note that not all DHCP clients in Linux can support Raw-IP format, udhcpc however support this for IPv4 over Raw-IP.
udhcpc -q -f -n -i wwan0
Disconnect the data bearer and data connection over QMI by command bellow and providing the network handle and CID returned at connection activation:
qmicli --device=/dev/cdc-wdm0 --device-open-proxy --wds-stop-network=NETWORK_HANDLE --client-cid=CID
Additional useful commands:
Request module manufacturer:
qmicli --device=/dev/cdc-wdm0 --device-open-proxy --dms-get-manufacturer
Get module model:
qmicli --device=/dev/cdc-wdm0 --device-open-proxy --dms-get-model
Get firmware version:
qmicli --device=/dev/cdc-wdm0 --device-open-proxy --dms-get-revision
Get module IDs (IMEI etc.):
qmicli --device=/dev/cdc-wdm0 --device-open-proxy --dms-get-ids
Get SIM card status:
qmicli --device=/dev/cdc-wdm0 --device-open-proxy --uim-get-card-status
Recent cellular modules like Sierra Wireless EM7565 require at least libqmi V1.20. Check version with command:
If the connection was successfully set up established, you now have data connectivity. A ping to a remote server using the cellular network interface can for example prove this:
ping -I wwan0 188.8.131.52
The ifconfig Linux tool can show the current details for the network interface:
libqmi is well integrated and supported in ModemManager tool for Linux. ModemManager again is well integrated and supported when using NetworkManager tool in Linux. Please note however that these two tools expect the cellular module interfaces to only be used by them so if you manually want to use the libqmi library or AT commands interfaces, please turn off/disable ModemManager and NetworkManager first.
The libqmi is a generic open source library for Linux systems and QMI protocol from Qualcomm, therefor there are commands only working on selected devices and not necessarily supported on the device you use, resulting in an error message.
How to change USB composition mode to Mobile Broadband Interface (MBIM) that is used by Windows 8 and 10 systems for data connectivity and enabling support for the built-in connection manager in Windows?
This is done by sending AT commands to the Modem or AT serial interfaces that are accepting AT commands. The module will then change the USB endpoint composition it exposes. You can find the correct Serial COM port number by checking in the Windows device manager under the Modems drop down -> (right click and see properties for selected COM port info) or under the Ports (COM & LPT) drop down.
Commands to use:
Sierra Wireless EM75xx series module:
Sierra Wireless EM74xx, MC74xx series module:
Sierra Wireless EM73xx, MC73xx series module:
Simcom SIM7xxx series modules:
ZTE Welink ME3630 series:
Telit LE910x V2:
On Huawei modules the USB mode changing is done automatically by the Windows drivers and otherwise defaults to the modules standard endpoint interfaces.
How to collect initial diagnostics data for Sierra Wireless EM/MC73 series cellular modules when requesting technical support?
In order to troubleshoot and solve a technical problem, we ask you to please provide information about your system and logs from the related module when creating a technical support ticket.
Please provide a problem description of what exact problem is and in what precise situations it is present.
Describe the host system:
-Hardware (system board, peripherals...)
-Operating system and detailed versions (E.g. Windows, Linux dist, release, kernel...)
-Drivers and driver versions
Identify the precise details of cellular module found on label:
-SKU/BOM or P/N code
(For RMA returns the IMEI number is required also)
If you are running on a Linux based system, please capture the terminal logs bellow:
ls -l /dev/serial/by-id
ls -l /sys/bus/usb-serial/devices
The logs from module firmware can be acquired by accessing one of the USB enumerated serial (COM) interfaces accepting AT commands. (In Windows this is generally modem devices or AT commands serial interfaces). Send the following AT commands to module and capture the text output and include them when creating the the technical support ticket.
Sierra Wireless :
The support ticket can be created after login at: https://techship.com/technical_support/
How can we establish data connection for cellular modules in Windows 8 and Windows 10 systems?
Microsoft Windows desktop versions starting from Windows 8 and newer have built in data connection manager for WWAN, Wifi etc. that can be used to configure, control and establish the data connection of cellular module that support MBIM interface, which most cellular modules do.
The connection managers settings and controls can be found and accessed on Windows desktop start menu through the network icon (see picture).
The Cellular tab can be found in Windows system settings and if needed the connection APN details can be manually entered through "Advanced options".
How can we capture DM serial port logs for Sierra Wireless EM/MC series cellular modules in Linux?
In the Sierra Wireless QMI SDK downloadable archive there is a a DM log tool in the tools folder.
Run the dmcapture.sh script with desired filter, and the ttyUSB0 (DM port) device selected.
E.g. like this:
sudo ./dmcapture.sh -l -d /dev/ttyUSB0 -o testlog -f ./filters/v11026_Generic_GSM_WCDMA_LTE_IP.sqf
This will create a log file that can be sent for analyze and debug to Sierra Wireless.
The Sierra Wireless EM73, EM74 and EM75 series M.2 modules are not detected in the host system when used with the M.2 to USB adapter board? (USBM2, USB3M2)
Sierra Wireless EM73, EM74 and EM75 series M.2 modules DPR pin 25 compatibility with Bplus M.2 key B to USB adapters.
When using the Bplus USB3M2 and USBM2 adapter boards you will need to change the state of the jumper JP1 on the USB adapter board. This controls the Dynamic Power Control (DPR) pin in the M.2 socket to the cellular module.
Please remove the pin jumper piece and leave all 3 pins not connected / floating. This will allow the module to operate normally.
After changing this jumper state and powering on the module and adapter board, you should see the module appear and boot up normally in the host system device.
For further details, please relate to the Sierra Wireless related product technical specification as well as the assembly guide for the adapter boards.