Part 4 – AT Commands for the SocketModem iCell, SocketModem IP, and MultiModem iCell

Chapter 14

Incoming Call Management Commands

#ACCEPT – Answer Incoming Call

Description:

This command directs the TCP/IP stack to answer an incoming call. When the TCP/IP stack

 

receives an incoming call, it sends over the serial port the “RING” messages. Depending on the

 

value of the ANSWERMODE parameter, the TCP/IP stack may answer automatically or not.

 

If ANSWERMODE is set to 0, it is the host that is responsible for answering the incoming call.

 

Once the physical layer is up, the TCP/IP stack runs.

 

The AT#CONNECTIONSTOP command ends the connection by going on hook.

Values:

Read parameters:

 

ANSWERMODE

 

IPSPW

 

 

 

ISPUN

 

 

 

PPPMYIP

 

 

Syntax:

AT#ACCEPT

 

 

 

 

 

 

 

Command

 

 

Possible Responses

 

AT#ACCEPT

 

 

OK

 

 

 

 

Note: Beginning of the call setting process

 

Note: Manual acceptance

 

CONNECT <speed>

 

of an incoming call

 

Note: Modem speed negotiated between both sides

 

 

 

 

xxx.xxx.xxx.xxx

 

 

 

 

Note: IP address indication attributed to the TCP/IP stack

 

 

 

 

PPP OK

 

 

 

 

Note: The software is ready to run IP applications to send/receive data

 

AT#ACCEPT

 

 

NO CARRIER

 

Note: Manual acceptance

 

Note: The modem handshaking process with the remote host is

 

 

interrupted or unsuccessful

 

of an incoming call

 

 

 

AT#ACCEPT

 

 

PPP ERROR

 

Note: Manual acceptance

 

Note: The PPP negotiation has failed (check ISPUN, ISPPW,

 

 

PPPMODE, and the configuration of the PPP peer)

 

of an incoming call

 

 

 

#CONNECTIONSTOP – Stop Communication

Description: This command directs the TCP/IP stack to end a communication previously established with a CONNECTIONSTART command or AT#ACCEPT.

Values: No TCP/IP parameter is used for the execution of this command.

Syntax: AT#CONNECTIONSTOP

Command

Possible Responses

AT#CONNECTIONSTOP

OK

Note: Disconnect

 

Universal IP AT Commands Reference Guide (Document S000457K)

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Multi-Tech Systems iCell GPRS (MTSMC-G2-IP Incoming Call Management Commands, #ACCEPT Answer Incoming Call, At#Accept
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iCell GPRS (MTSMC-G2-IP specifications

Multi-Tech Systems iCell GPRS (MTSMC-G2-IP) is a versatile and powerful device designed for seamless connectivity in various applications, particularly in industrial and commercial environments. Known for its robust performance, the iCell GPRS module incorporates advanced technologies that enable effective communication over GPRS networks, making it an ideal solution for IoT applications, remote monitoring, and data collection processes.

One of the main features of the iCell GPRS is its dual SIM capability, which enhances network reliability and ensures continuous connectivity even in the event of network outages. By allowing the use of two SIM cards from different carriers, the device can switch between networks automatically, thereby minimizing downtime and maintaining critical communication channels.

The iCell GPRS supports various protocols including TCP/IP, UDP, and MQTT, which facilitates seamless integration with a range of applications. This flexibility in communication protocols allows developers to create customized solutions tailored to their specific needs, ensuring that the device can fit seamlessly into their existing infrastructure.

Another key characteristic of the MTSMC-G2-IP is its compact design and durability, making it suitable for deployment in a variety of environments. It features a wide operating temperature range that allows it to function efficiently in both extreme heat and cold, thereby catering to diverse applications across different industries. Additionally, the device is designed for easy installation and integration, which helps reduce deployment time and costs.

The iCell GPRS also includes built-in security features such as firewalls and secure data transmission protocols, protecting sensitive information from unauthorized access. This is particularly important for applications in sectors such as healthcare, finance, and transportation, where data integrity and security are paramount.

Furthermore, the device is equipped with various I/O ports that facilitate connectivity with external sensors, actuators, and other hardware. This feature makes it highly adaptable for monitoring and control systems, enabling users to gather real-time data and respond promptly to changing conditions.

In sum, the Multi-Tech Systems iCell GPRS (MTSMC-G2-IP) is a reliable and feature-rich solution designed for modern communication needs. Its dual SIM support, protocol versatility, robust design, and integrated security features make it an ideal choice for IoT and remote monitoring applications across numerous industries. Whether used in industrial automation, environmental monitoring, or smart cities, the iCell GPRS stands out as a dependable device that enhances connectivity and operational efficiency.
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