Paradyne 3440-A2-102 Comsphere 3440-02 External Modem

Product Description

The Paradyne 3440-A2-102 Comsphere is an external modem designed to deliver high-speed data communication over analog telephone lines, supporting the V.34 standard for data transfer rates up to 33.6 kilobits per second (Kbps). This modem was a critical component for businesses and remote users requiring efficient data exchange, remote access, and internet connectivity in the pre-broadband era. It connects to a computer via an RS-232 serial port and to the telephone network through a standard RJ-11 phone line. This model incorporates advanced features crucial for maintaining data integrity and maximizing performance. It includes robust error correction protocols like V.42 and MNP (Microcom Networking Protocol) to ensure reliable data transmission even over noisy or degraded phone lines. Furthermore, it supports data compression techniques such as V.42bis and MNP 5, which can effectively increase the perceived data throughput by reducing the size of the data being transmitted. The 3440-A2-102 is capable of operating in both asynchronous and synchronous modes, offering flexibility for integration with various systems. As an external unit, the Paradyne 3440-A2-102 Comsphere is designed for straightforward installation and use. It typically features a panel of LED indicators that provide visual feedback on the modem's status, including power, data transmission, and connection activity. It requires an external power adapter to function. This modem represents a high-performance solution for its time, offering a balance of speed, reliability, and compatibility for dial-up data communications.