User guide

Preparing to Install the Cisco 2500 Series Access Server 2-9
Console and Auxiliary Port Considerations
The use of balanced drivers allows EIA/TIA-449 signals to travel greater distances than the
EIA/TIA-232 standard. Table 2-2 lists the standard relationship between baud rate and
maximum distance for EIA/TIA-449 signals. These limits are also valid for V.35 and X.21.
Table 2-2 EIA/TIA-449 Speed and Distance Limitations
Caution
The EIA/TIA-449 and V.35 interfaces support data rates up to 2.048 Mbps.
Exceeding this maximum could result in loss of data and is not recommended.
Console and Auxiliary Port Considerations
This section discusses important cabling information that must be considered before you
connect the terminals or modems to console and auxiliary ports. The console port and the
auxiliary port are used to provide access to the system either locally or remotely.
38,400 50 15
57,600 25 7.6
115,200 12 3.7
Data Rate
(Baud)
Distance
(Feet)
Distance
(Meters)
2400 4,100 1,250
4800 2,050 625
9600 1,025 312
19200 513 156
38400 256 78
56000 102 31
T1 50 15
Data Rate
(Baud)
Distance
(Feet)
Distance
(Meters)