THE ASTER 5 SERIES USES THE SUPERIOR OneAccessDSP TECHNOLOGY TO ACHIEVE DATATRANSFER RATES (UNCOMPRESSED) OF UP TO 33.6 KBPS ON LEASED LINES AND PSTN DIAL-UP CIRCUITS WITH AUTOMATIC OR USERCONTROLLED (E.G. BY THE NETWORK MANAGEMENT SYSTEM) FALLBACK BASED ON CUSTOM-DEFINED LINEQUALITY THRESHOLDS. THE MODEM IS DESIGNED FOR BOTH 2-WIRE AND 4-WIRE ANALOGUE LINES.

The Aster 5 can even further increase the user data rate by using powerful compression algorithms. Both the V.42bis and the MNP5 algorithm are supported. It provides not only regular asynchronous compression but also synchronous compression on HDLC frames (such as LAPB, LAPF, and SDLC) as a unique standard feature. This gives higher throughput and faster response times when interconnecting Frame Relay, X.25, or SNA equipment.

An optional hardware DES encryption model ensures data confidentiality, which makes the Aster 5 ideal for demanding security environments such as those of financial institutions, government agencies, and leading-edge research and development enterprises. Flexible backup scenarios of the analogue leased line through the PSTN network guarantee the reliability of the network. To prevent unauthorized access to the network, high-level security features are included to protect the PSTN port. Access security on this high-performance modem includes fully encrypted password exchange, call-back, and dial backup security.

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

The Aster 5 is designed for integration into demanding network environments and can be controlled by the complete set of network maintenance and management tools as described in the related products section.