Specifications

2-8 Cisco Multiport Router Hardware Installation and Configuration Guide
Preparing to Connect to a Network
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 2-2 lists the maximum speeds and distances for EIA/TIA-232 signals. This signaling
standard supports unbalanced circuits at signal speeds up to 64 kbps.
1. If pins protrude from the base of the connector, the
connector is male.
2. If the connector has holes to accept pins, the connector is
female.
3. CSU/DSU = Channel service unit/data service unit.
Table 2-1 Typical DTE and DCE Devices
Device Type Gender
Typical
Devices
DTE Male
1
Terminal
PC
Router
DCE Female
2
Modem
CSU/DSU
3
Multiplexer
Table 2-2 EIA/TIA-232 Speed and Distance Limitations
Data Rate
(Baud)
Distance
(Feet)
Distance
(Meters)
2400 200 60
4800 100 30
9600 50 15
19200 50 15
38400 50 15
64000 25 7.6