Chapter 6: Using the Software

IP Statistics

IP statistics screen

UDP versus TCP. (User Datagram Protocol versus Transmission Control Protocol). UDP provides unguaranteed, connectionless transmission of data across an IP network. By contrast, TCP provides reliable, connection- oriented transmission of data.

Both TCP and UDP split data into packets called “datagrams.” However, TCP includes extra headers in the datagram to enable retransmission of lost packets and reassembly of packets into their correct order if they arrive out of order. UDP does not provide this. Lost UDP packets are irretrievable; that is, out-of-order UDP packets cannot be reconstituted in their proper order.

Despite these obvious disadvantages, UDP packets can be transmitted much faster than TCP packets -- as much as three times faster. In certain applications, like audio and video data transmission, the need for high speed outweighs the need for verified data integrity. Sound or pictures often remain intelligible despite a certain amount of lost or disordered data packets (which comes through as static).

Multi-Tech Systems, Inc.

MVPGSM

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Multi-Tech Systems MVPGSM-2 manual IP Statistics, IP statistics screen
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MVPGSM-2 specifications

The Multi-Tech Systems MVPGSM-2 is a robust and versatile device designed for various telecommunication applications, particularly those involving GSM cellular technology. This multi-function modem is ideally suited for machine-to-machine (M2M) communication, enabling seamless data transfer for remote monitoring, control, and automation.

One of the MVPGSM-2's key features is its dual-band GSM support, which allows for enhanced connectivity and coverage. The device operates on both 850 MHz and 1900 MHz frequency bands, ensuring compatibility with a wide range of GSM networks across different geographical areas. This flexibility makes it an excellent choice for applications that require reliable wireless communication, such as in remote sensors, telemetry, and industrial automation.

The MVPGSM-2 incorporates advanced technologies like GPRS (General Packet Radio Service) and SMS (Short Message Service), enabling efficient and real-time communication capabilities. GPRS facilitates data transmission at speeds up to 114 kbps, making it suitable for sending and receiving large volumes of data quickly. The SMS functionality allows for reliable and immediate messaging, making it easier to receive alerts and notifications in real time.

One of the standout characteristics of the MVPGSM-2 is its rugged design. Built to withstand harsh environmental conditions, it features durable casing that protects it from dust and moisture. This ruggedness ensures that the device performs reliably in various industries, including agriculture, transportation, and energy, where exposure to challenging conditions is common.

Additionally, the MVPGSM-2 supports multiple I/O ports, including digital inputs and outputs, which provide flexibility in integration with various sensors and control systems. This versatility allows users to customize the device to meet specific application needs.

The device also comes with comprehensive software and development kits that streamline integration into existing systems and applications. Multi-Tech Systems offers extensive technical support and documentation, ensuring that users can easily navigate the setup process.

In summary, the Multi-Tech MVPGSM-2 is a powerful GSM modem designed for M2M communication, featuring dual-band support, GPRS and SMS capabilities, rugged design, and flexible I/O options. Its robust performance makes it a valuable tool for various industrial applications, ensuring reliable data communication and management in the field.
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