Generation Modems provide superior reach and noise immunity using
G.shdsl (TC-PAM16) line coding compared to other DSL technologies.
However some applications need even more distance. Typical examples of
such applications are:
• DSL links alongside Railways, Pipelines, Power lines, Waterways
• DSL transport to remote concentrators in rural areas
• GSM base station connections along motorways, railroads, canals
• Military applications
You now have a cost-effective option for such applications, by using an
AccessDSL G.SHDSL Add-Drop repeater. Each repeater fully regenerates
the signal and thus doubles the transmission distance. Even with many
(above 10) repeaters in a link the head-end interfaces fully correspond
to the standards (G.703 or N*64(V.36, V.36, X.21) without having the
usual back-to-back repeater “jitter and wander’ problems. Each repeater
board supports one pair. Repeaters can be locally or remotely powered.
Remote power can be supplied by LTU AccessDSL cards or by a separate
optional Power Supply unit (RPSU-300).
Being more then just a repeater, the AccessDSL unit has add-drop
capabilities. In each repeater location you can add and drop Time Slots
(using standard Fractional E1 interface) into the DSL data stream. This
eliminates a need for additional multiplexers and DSL modems for
“linear network topologies” saving significant costs. You also have an
option to choose asynchronous and N*64 interfaces (i.e. RS-232 or
RS-485), which convert the repeater into a data acquisition device
often needed for industrial automation purposes and communications
along pipelines, railways, motorways, waterways etc. With an optional
external alarm management function, you can collect alarm information
from external sensors such as lock control, floatation, fire etc.
A DSL link containing one or several AccessDSL repeaters is fully
manageable either from LTU and/or NTU side. AccessDSL repeaters are
delivered in protected IP-67 housings to meet harsh environmental
conditions or in a standard in-door plastic housing option.
For OEM projects, the repeater can be adapted to your specific housing, line coding (SHDSL based) and management system.