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Functional Description
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The CROCUS SDSL is a state-of-the-art baseband modem offering full duplex transmission up to 1.152 Mbit/s over a single two-wire unconditioned unshielded twisted-pair cable. The line speed of the modem can be adapted in order to optimise the throughput as a function of the characteristics of the local loop. A complete range of plug-in interface boards makes the Crocus SDSL ideal for interfacing with almost any application. Not only traditional serial interfaces such as V.35, V.36, RS-530 and X.21, but also G.703 and direct Ethernet 10BaseT connections with integrated bridge or router functionalities are available. All these interface boards can be exchanged in only a few seconds.Each type of interface card is available as either transparent or Nx64K version, maximising the functionality and flexibility of the modem. Transparent interface cards offer the same transmission rate to the application as that of the line access. Nx64K cards can be configured to deliver user data rates of any multiple of 64 Kbit/s, up to the speed configured on the line access. They allow to adapt dynamically adaption (e.g., from a central maintenance centre) of the available throughput rate on each individual link. Typical applications for the Crocus SDSL are in carrier environments (high speed local loop access), railways, campus networks, hospitals, highway infrastructures and large industrial plants. The Crocus SDSL is ideal for high-speed backbone access (e.g., Internet, X.25, Frame Relay, etc.) and other high bandwidthing applications. The 10BaseT Ethernet cards (available as a bridge or as an IP router) provide a direct Ethernet connection to the application and are more oriented towards LAN-to-LAN connections and fast Internet access.
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Packet Switched
Backbone Access  |
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Direct Ethernet Interconnectivity  |
The Crocus SDSL can be configured in several ways. DIP switches allow the modem to be hardware strapped for the most common configurations. With a free Windows application, the operator can configure both the local and the remote modems. In addition, the software permits performance monitoring and retrieval of statistics from the equipment. For larger networks,
the CROCUS SDSL can be managed with a management application running
on the HP OpenView management platform. An embedded management channel
on the communication link permits the transport of management information
towards remote equipment without interfering with the user data. Line interface
Versions
Digital interfaces
Nx64 serial interfaces:
Management Interface:
Supplementary features
Mechanical data
Environmental Requirements
Power Requirements
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