Paradyne 3480-10 Comsphere 3480-10 External Modem

Product Description

The Paradyne 3480-10 Comsphere is an external modem that facilitates data communication over traditional analog telephone lines. This device was a common solution for establishing remote access, connecting to bulletin board systems (BBS), or transferring data between geographically dispersed locations before the widespread adoption of broadband internet. It connects to a computer via an RS-232 serial port and to the telephone network via a standard RJ-11 phone jack. This modem supports the V.34bis standard, enabling data transfer speeds of up to 28.8 kilobits per second (Kbps), which was considered high-speed for its era. It also incorporates advanced features such as error correction protocols (like V.42 and MNP 2-4) to ensure data integrity over potentially noisy phone lines, and data compression (V.42bis and MNP 5) to maximize throughput. The modem can operate in both asynchronous and synchronous modes, offering flexibility for different communication requirements. Designed for ease of use, the Paradyne 3480-10 typically features a set of LED indicators on its front panel that provide visual feedback on the modem's status, including power, connection, and data transmission activity. Its external design allows for simple setup and placement, and it requires an external power adapter to operate. This model represents a reliable piece of legacy networking hardware for specific dial-up communication needs.