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Principles of Operation
2-33510-A2-GN32-50 January 1998
DSU Compatibility
For primary channel communication, the standalone
Model 3510 and the carrier-mounted Model 3511 DSUs
are fully compatible with all Paradyne digital products
that operate at the same speed and power level.
Point-to-point and multipoint configurations are not
limited to connections between 3500 Series DSUs; many
other combinations of equipment are possible.
Table 2-1 lists the diagnostic compatibilities supported
by a 3500 Series DSU communicating with another
device and potential operating speed mismatches.
Table 2-1
DSU Compatibilities
Paradyne Devices
Communicating with
3510/3511 DSUs
Diagnostics Supported
Speeds Not Supported by the
Combination of DSUs (in Kbps)
3500 Series DSU 2500 diagnostics No restrictions
2500 Series DSU
(DATAPHONE II)
2500 loopbacks on a point-to-point
network; no diagnostics on a
multipoint network
(primary channel compatibility only)
19.2 DDS, 38.4, 64 LADS, 64 CC
2600 Series DSU
(DATAPHONE II)
2600 diagnostics
(3510 tributary only)
19.2 DDS, 38.4, 64 LADS, 64 CC
3456 DSU No diagnostics
(primary channel compatibility only)
64 CC
3056 DSU No diagnostics
(primary channel compatibility only)
14.0, 19.2 DDS, 28.0, 38.4,
64 LADS, 64 CC