Cisco CPA2501, Руководство пользователя

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2-8 Cisco 2500 Series Multiport Serial Router User Guide
Creating a Site Log
Creating a Site Log
The Site Log provides a record of all actions relevant to the system. Keep it near the chassis
where anyone who performs tasks has access to it. Use the Installation Checklist (see the
previous section “Installation Checklist”) to verify steps in the installation and maintenance
of your system. Site Log entries might include the following:
•
Installation progress—Make a copy of the Installation Checklist and insert it into the
Site Log. Make entries on the checklist as you complete each procedure.
•
Upgrades and maintenance procedures—Use the Site Log as a record of ongoing system
maintenance and expansion. Each time a procedure is performed on the system, update
the Site Log to reflect the following:
— Configuration changes
— Changes and updates to Cisco IOS software
— Maintenance schedules and requirements
— Corrective maintenance procedures performed
— Intermittent problems
— Related comments and notes
Cabling Considerations
When setting up your multiport serial router, consider distance limitations and potential
electromagnetic interference (EMI) as defined by the Electronic Industries Association
(EIA).
Warning The ports labeled “Ethernet,” “10BaseT,” “Token Ring,” “Console,” and “AUX”
are safety extra-low voltage (SELV) circuits. SELV circuits should only be connected to
other SELV circuits. Because the BRI circuits are treated like telephone-network voltage,
avoid connecting the SELV circuit to the telephone network voltage (TNV) circuits. (To see
translated versions of this warning, refer to the appendix “Translated Safety Warnings.”)