Data Communication and Host Modes

•TCP auto answer is enabled (S1), a TCP connection request is received, and the modem is not in a data session.

•Data is received on the serial port and

·The Startup Mode Default (MD) is 4 (auto TCP)

·The remote TCP destination, as defined in S53, success‐ fully responds to the TCP connection request.

The value of S7 (TCP Connection Time‐out) specifies the number of seconds to wait, after initiating a TCP connection attempt, for a successful connection to be established. If the connection has not been successfully established before the time‐out occurs, ERROR/BUSY is returned.

TCP packet assembly is affected by the values of S50 (PAD Forwarding Time‐out) and S51 (PAD Forwarding Character). Data received in the serial buffer will be transmitted when the idle inter‐character time‐out specified in S50 (in tenths of seconds) occurs or when a character is received that matches S51 (if non‐zero).

The TCP session will be terminated if no data is transmitted or received for the time interval specified in TCPT and TCPS. TCPT is the number of minutes (TCPS=0) or seconds (TCPS=1) used for this idle time‐out.

Caution: TCPT should never be 0 when using the TCP mode. A broken TCP session can result in the modem being left with a TCP half-open connection that can only be terminated with a reset.

TCP Auto Answer

TCP auto answer (S0=12) also allows a TCP connection request to be “answered” when the modem is idle, not in a data session. The TCP connection requestʹs destination port has to match the modemʹs device port.

Note: UDP auto answer may also be set simultaneously with TCP auto answer. Then, when in the idle state, the modem will accept either a TCP connection request or UDP incoming packet, and enter a TCP or UDP session as appropriate.

Hybrid Modes

Hybrid modes are supported mainly for legacy implementa‐ tions. Some previous hybrid modes (MD=5, 6) are no longer implemented as special, unique modes. Now that UDP auto answer (UDP Half‐open, S82=2) can be enabled in conjunction

 

 

 

 

 

 

 

Rev 3.0B Feb.08

 

 

 

 

 

64

 

 

 

Page 68 Page 70
Page 69
Image 69
Sierra Wireless 20070914 manual Hybrid Modes, TCP Auto Answer
Page 68 Page 70

20070914 specifications

Sierra Wireless 20070914 is a cutting-edge wireless communication module designed for IoT applications, offering remarkable features and robust performance. This module represents a significant advancement in the realm of embedded wireless solutions, catering to a variety of industries including automotive, industrial automation, and smart cities.

One of the key features of the Sierra Wireless 20070914 is its support for multiple cellular standards, including LTE, which ensures high-speed data transfer and reliable connectivity. The module is designed to operate on various frequency bands, making it versatile and suitable for global deployment. This multi-band capability allows businesses to deploy their IoT solutions in different regions without modification, reducing time-to-market and deployment costs.

Another standout characteristic of the Sierra Wireless 20070914 is its comprehensive and seamless integration with cloud services. The module supports advanced cloud connectivity options, enabling real-time data processing and analysis, which is crucial for industries that rely on timely decision-making. This feature is particularly important in sectors like transportation and logistics, where real-time tracking and monitoring are essential.

The power efficiency of the Sierra Wireless 20070914 is noteworthy. It is engineered to operate optimally in low-power modes, making it ideal for battery-operated devices. This focus on energy efficiency ensures prolonged device lifecycles, supporting the growing demand for sustainable and eco-friendly technologies.

Moreover, the module includes encrypted communication features, enhancing security and protecting sensitive data transmissions. With the increasing prevalence of cyber threats, this security aspect is critical for businesses looking to safeguard their IoT applications from unauthorized access and data breaches.

In addition to these features, the Sierra Wireless 20070914 offers comprehensive development support, including software development kits (SDKs) and application programming interfaces (APIs). This makes it easier for developers to integrate the module into their existing systems, streamlining the development process and accelerating innovation.

Overall, the Sierra Wireless 20070914 stands out as a powerful solution for IoT connectivity, blending advanced technology, security, and efficiency. Its capabilities are designed to support the diverse needs of modern industries, paving the way for future innovations and advancements in wireless communication. As businesses increasingly turn to IoT for modernization, modules like the Sierra Wireless 20070914 will play a crucial role in enabling this transformation.
Top Page Image Contents