Cisco CISCO2515-RF - 2515 Router User Manual page 23

User guide
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Speed and Distance Limitations
Serial signals can travel a limited distance at any given bit rate; generally, the slower the
data rate, the greater the distance. All serial signals are subject to distance limits, beyond
which a signal degrades significantly or is completely lost.
Table 2-3 lists the maximum speeds and distances for EIA/TIA-232 signals. This signaling
standard supports unbalanced circuits at signal speeds up to 64 kbps.
Table 2-3
Data Rate
(Baud)
2400
4800
9600
19200
38400
64000
Balanced drivers allow EIA/TIA-449 signals to travel greater distances than
the EIA/TIA-232 signals. Table 2-4 lists the maximum speeds and distances for
EIA/TIA-449, V.35, X.21, and EIA-530 signals.
Table 2-4
Data Rate
(Baud)
2400
4800
9600
19200
EIA/TIA-232 Speed and Distance Limitations
Distance
Distance
(Feet)
(Meters)
200
60
100
30
50
15
50
15
50
15
25
7.6
EIA/TIA-449, V.35, X.21, and EIA-530 Speed and Distance
Limitations
Distance
Distance
(Feet)
(Meters)
4,100
1,250
2,050
625
1,025
312
513
156
Preparing to Connect to a Network
Preparing to Install the Router 2-9

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