Other Commands, Type AT+CSO | Multi-Tech Systems MultiModem manual

Chapter 4 – Other Commands

Checking the Signal Quality of the Wireless Modem

•Type AT+CSO

Modem responds with the received signal strength (rssi).

Checking the Identity of the Wireless Modem

The command used in this example is ATI. AT is followed by the capital letter i.

•Type ATI0 (The command ends in zero).

Manufacturing data displays. Example: xxxxxxxx Modem 800 1900

•Type ATI3.

Software version displays. Example: S/W VER: xxxxx

•Type ATI6.

Capability data displays. Example: +CGSM, +CIS707, .....

Checking the Network Registration and Roaming Status of the Wireless Modem

•Type AT+CREG?

The modem will respond in one of the following ways:

+CREG: 0,0 This tells you the modem is not registered on any network.

+CREG: 0,1 This tells you the modem is registered on the home network.

+CREG: 0,5 This tells you the modem is registered on a network but it is roaming.

Disabling Flow Control of the Bluetooth Interface

•Using terminal screen with flow control enabled, issue commands to turn off flow control..

Send:	ATSW22,3,1,0 <cr_lf>	// Set PIO3 as output and do not store in flash
Reply:	OK<cr_lf>
Send:	ATSW23,3,1,0<cr_lf>	// Set PIO3 output high and do not store in flash
Reply:	OK<cr_lf>

•To store setting in flash:

Send:	ATSW22,3,1,1 <cr_lf>	// Set PIO3 as output and store in flash
Reply:	OK<cr_lf>
Send:	ATSW23,3,1,1<cr_lf>	// Set PIO3 output high and store in flash
Reply:	OK<cr_lf>

Now you can communicate with the Bluetooth device with flow control turned off.

Configuring DTR Reset Function on the Bluetooth Interface

IMPORTANT: These commands should be used only when the Bluetooth is running as a Master

•Using terminal screen, issue commands so that when the DTR goes off, the adapter is reset:

Send: ATSW22,6,1,0 <cr_lf> // Set PIO6 as output and do not store in flash

Reply: OK<cr_lf>

Send: ATSW23,6,0,0<cr_lf> // Set PIO6 output low and do not store in flash

Reply: OK<cr_lf>

•To store setting in flash:

Send: ATSW22,6,1,1 <cr_lf> // Set PIO6 as output and store in flash

Reply: OK<cr_lf>

Send: ATSW23,6,0,1<cr_lf> // Set PIO6 output low and store in flash

Reply: OK<cr_lf>

Now you can communicate with the Bluetooth master device; and when wireless connection is terminated (DTR goes off), the Bluetooth adapter will reset.

Disabling DTR Reset Function on the Bluetooth Interface

This command is issued if you change the Bluetooth from running as a Master to running as a Slave. The DTR reset function cannot be used in Slave mode.

•Disable Bluetooth device to reset when DTR goes off:

Send:	ATSW22,6,0,1 <cr_lf>	// Set PIO6 as input and store in flash
Reply:	OK<cr_lf>

Multi-Tech Systems, Inc. MultiModem Wireless EDGE, GPRS, & CDMA Modem with Bluetooth (S000390B)			15

MultiModem specifications

The Multi-Tech Systems MultiModem is a versatile solution recognized for its reliability and efficiency in data communication. Ideal for a variety of applications, the MultiModem encompasses several models, each tailored to accommodate different communication needs, including M2M (Machine-to-Machine) solutions and IoT (Internet of Things) applications.

One of the standout features of the MultiModem is its support for multiple connectivity options. It is equipped with various technologies, including GSM, CDMA, and LTE, allowing users to choose the optimal network for their specific requirements. This multi-network compatibility ensures a greater range of connectivity in diverse geographic areas, making it suitable for both urban and remote settings.

The MultiModem also features robust data transmission capabilities, offering different interfaces such as USB, RS232, and Ethernet. These options facilitate seamless integration with existing systems, whether they are legacy devices or modern applications. This flexibility makes the MultiModem an excellent choice for industries like transportation, healthcare, and industrial automation.

Another defining characteristic of the MultiModem is its advanced security features. Security in data transmission is paramount, especially in today’s digital landscape. The MultiModem comes equipped with encryption options and secure access protocols, ensuring that sensitive information is protected against unauthorized access and breaches.

Moreover, the device is designed for durability and reliability, capable of operating in harsh conditions. This ruggedness is crucial for deployments in remote locations, where environmental factors could pose challenges. The MultiModem is built to withstand extreme temperatures and electromagnetic interference, which are common in industrial settings.

In addition to its hardware capabilities, the MultiModem is also supported by robust software solutions that enable easy configuration and management. The accompanying software tools provide user-friendly interfaces, allowing businesses to monitor, manage, and optimize their communication networks effectively. Remote management capabilities further enhance operational efficiencies, enabling users to update settings and troubleshoot issues without being physically present.

Overall, the Multi-Tech Systems MultiModem stands out as a powerful and flexible tool for robust and secure data communication. Its broad range of applications, combined with advanced features, makes it a trusted choice for businesses looking to implement reliable connectivity in their operations. Whether enhancing M2M communications or integrating IoT devices, the MultiModem provides a reliable backbone for modern data transmission needs.