Voiceband Modem Aster 5

The Aster 5 series uses the superior DSP technology to achieve data transfer rates (uncompressed) of up to 33.6 kbps on leased lines and PSTN dial-up circuits with automatic or user controlled (ie. By the network management system) fallback based on custom defined line quality thresholds. The modem is designed for both 2 and 4 wire analogue lines.

The Aster 5 can even further increase the user data rate by using powerful compression algorithms. Both the V.24bis and the MNP5 algorithm are supported. It provides not only regular asynchronous compression but also synchronous compression on HDLC frames as a unique standard feature. This gives higher throughput and faster response times when interconnecting Frame Relay, X.25, or SNA equipment.

For larger concentration sites, rack-mounted versions are available mounted in a standard 19” card nest and can offer densities of 30 modems per rack.

Features

• V.21 - V.34+ 33,600 bps on standard switched telephone lines (PSTN) and 2/4 wire leased lines
• Superior DSP technology for optimum line performance
• Flash memory for a future-proof solution
• Full duplex asynchronous and synchronous data compression
• Advanced PSTN backup scenarios upon leased line failure
• Hacker-proof PSTN security access control
• Optional DES encryption
• Multiple management facilities including line quality monitoring
• Backwards compatible with the Aster 4 series
• Desktop and dual card version – Mains or 48V versions