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Chapter 2
Installation Safety and Site Preparation
Table 2-2
Rate (bps)
19200
38400
56000
1544000 (T1)
Asynchronous/Synchronous Serial Module Baud Rates
The following baud-rate limitations apply to the slow-speed serial interfaces found in the
asynchronous/synchronous serial modules:
•
•
Required Tools and Equipment for Installation and Maintenance
You need the following tools and equipment to install and upgrade the router and its components:
•
•
•
•
In addition, depending on the type of modules you plan to use, you might need the following equipment
to connect a port to an external network:
•
•
•
•
•
•
OL-26438-02
Serial Signal Transmission Speeds and Distances (continued)
Distance for
EIA/TIA-232
Feet
Meters
25
7.6
12
3.7
8.6
2.6
—
—
Asynchronous interface—Maximum baud rate is 115.2 kbps.
Synchronous interface—Maximum baud rate is 128 kbps full duplex.
ESD-preventive cord and wrist strap
Number 2 Phillips screwdriver
Phillips screwdrivers: small, 3/16-in. (4 to 5 mm) and medium, 1/4-in. (6 to 7 mm)
Screws that fit your rack
Cables for connection to the WAN and LAN ports (dependent on configuration).
Ethernet hub or PC with a network interface card for connection to an Ethernet (LAN) port.
Console terminal (an ASCII terminal or a PC running HyperTerminal or similar terminal emulation
software) configured for 9600 baud, 8 data bits, 1 stop bit, no flow control, and no parity.
Modem for connection to the auxiliary port for remote administrative access (optional).
Data service unit (DSU) or channel service unit/data service unit (CSU/DSU) as appropriate for
serial interfaces.
External CSU for any CT1/PRI modules without a built-in CSU.
Required Tools and Equipment for Installation and Maintenance
Distance for X.21 and
V.35
Distance for USB
Feet
Meters
Feet
513
156
16.4
256
78
16.4
102
31
16.4
50
15
16.4
Cisco 1120 Connected Grid Router Hardware Installation Guide
Meters
5
5
5
5
2-7
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