Xyplex Inc, Littleton, Massachusetts, announced the addition of switched ISDN support for its Network 9000 Routing Hub, originally announced in 1992. Xyplex announced its intention to develop add ISDN communications in January, but was saying it would not be available until the second quarter. The upgrade takes the form of a series of modules, which the firm says provide on-board direct connections for T1/E1, Fractional T1/E1, Switched 56, and ISDN Primary and Basic Rate services. It is further said to incorporate an on-board Data Service Unit, and optional Channel Service Unit which it says eliminates the need for external multiplexers and DSU/CSUs. Xyplex says the new modules – which are hot-swappable – enable network managers to implement bandwidth-on-demand applications including activity based bridge-routing (based on a pre-defined activity such as receipt of packets); bandwidth aggregation; time-of-day routing; and leased line back-up. The six different modules – which come with different port, speed and interface options – cost from $9,000 to $11,500; all are available now.
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