COMSPHERE 3600 Series Data Service Units
4-48 March 1999 3610-A2-GB41-60
LADS Operation
The 3600 Series DSUs can be used as a local area data
set (LADS) to provide a point-to-point link between two
data devices having like protocols. The network facility is
a direct 4-wire connection without using a digital service.
Table 4-1 summarizes the distance limitations governing
the use of the 3600 Series DSUs for LADS operation.
The 3600 Series DSUs with TDM or MCMP can be
used as a LADS to provide either a multiplexed
point-to-point link between two locations or the DSD
capability at a remote location.
The 3600 Series DSUs with the digital bridge
capability (TDM or MCMP circuit card operating in
Bridge mode) can be used to support multipoint LADS
operation.
Table 4-1
LADS Connection Distances
Data Rate (kbps)
Wire Gauge (AWG)
Data Rate (kbps) 19 22 24 26
2.4 20.0 mi
(32.2 km) 16.6 mi
(26.7 km) 12.7 mi
(20.5 km) 9.4 mi
(15.1 km)
4.8 19.4 mi
(31.2 km) 12.7 mi
(20.5 km) 9.6 mi
(15.4 km) 7.1 mi
(11.5 km)
9.6 15.2 mi
(24.5 km) 9.7 mi
(15.6 km) 7.3 mi
(11.7 km) 5.6 mi
(9.0 km)
19.2111.8 mi
(19.0 km) 7.5 mi
(12.1 km) 5.7 mi
(9.2 km) 4.2 mi
(6.8 km)
38.4 11.2 mi
(18.0 km) 6.5 mi
(10.5 km) 4.6 mi
(7.4 km) 3.2 mi
(5.1 km)
56 9.2 mi
(14.8 km) 5.4 mi
(8.7 km) 3.8 mi
(6.2 km) 2.8 mi
(4.5 km)
64 9.2 mi
(14.8 km) 5.4 mi
(8.7 km) 3.8 mi
(6.2 km) 2.8 mi
(4.5 km)
1Power level is –10 dBm.