MT56DSU2 Owner’s Manual
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LOCAL AREA DATA SET APPLICATION
In this application, two pairs of wires provide the connection between two MultiDSU56K devices. The two
pairs can be up to the equivalent of 3 miles of 26 AWG wire at 56000 bps, or longer for subrate
applications (see distances chart in section 3.4.1 of this manual).
The figure below depicts a typical Local Area Data Set application.
DTE
Up to 3 miles
of 26 AWG wire
@ 56000 bps
DTE
MultiDSU56K
MultiDSU56K
(Requires two pairs
of interconnection wires)
Figure A-3. Local Area Data Set Application
EXTERNAL CLOCKING APPLICATION
This application is similar to the Local Area Data Set application except for the timing option setting.
In the example below, the DTE connector of the T1 mux is connected to the DTE connector of the
MultiDSU56K. Here, the MultiDSU56K must receive timing information from the T1 mux.
The MultiDSU56K is set for external timing in this type of application. At the DTE end, DDS timing is
selected, providing normal clocking to the DTE.
The figure below shows a typical External Clocking application.
DTE
4-Wire Line
MultiDSU56K
(with DDS timing)
MulitDSU56K
(with external timing)
T1
Multiplexer
Figure A-4. External Clocking Application
