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Multidrop Modems

These products are discontinued. When a product is in this phase, it is no longer being produced or maintained. Limited stock may be available for some discontinued products.
Westermo has multidrop modems both for private and for leased lines. Both type of modems can be connected to serial devices with RS-232 or RS-422/485 interfaces.
The V.23 standard which is the only multidrop leased line standard allows speed up to 1200 bit/s on two or four wire. Multidrop applications on private lines can have speeds up to 19 200 bit/s but the distances depend on the line quality and the number of drop points on the line.
Important for this kind of communication devices is that the units have good protection as the line interface is connected to long distance lines, exposed for all kind of external disturbances.

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