Cisco 2525 Preparazione all'installazione - Pagina 12

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Cisco 2525 Preparazione all'installazione
Preparing to Connect to a Network
Table 2-3
Description
Line rate
Data rates
Standards
1. Mbps = megabits per second.
2. The T1 interface is not channelized.

ISDN Connections

Use an appropriate cable (not included) to connect the router directly to an ISDN. (See
Table 2-4.) Refer to the section "ISDN BRI Port and Cable Pinouts" in the appendix
"Cabling Specifications for the Cisco 2524 and Cisco 2525 Routers" for port and cable
pinouts.
Note the following warnings:
Warning
switched 56 cables. If you detach the cable, detach the end away from the router first to
avoid possible electric shock. Network hazardous voltages are also present in the area of
the BRI (RJ-45), fractional T1/T1 (RJ-48C), and switched 56 (RJ-11 or RJ-48S) ports,
regardless of whether power is OFF or ON. (To see translated versions of this warning, refer
to the appendix "Translated Safety Warnings.")
Warning
inaccessible to user contact. Do not attempt to tamper with or open any public telephone
operator (PTO)-provided equipment or connection hardware. Any hardwired connection
(other than by nonremovable, connect-one-time-only lug) must be made only by PTO staff
or suitably trained engineers. (To see translated versions of this warning, refer to the
appendix "Translated Safety Warnings.")
Table 2-4 lists the specifications for ISDN BRI cables.
2-12 Cisco 2524 and Cisco 2525 Router User Guide
Fractional T1/T1 DSU/CSU WAN Module Network Specifications
Specification
1
1.544 Mbps
n
n
x 56 or
x 64 kbps, where
AT&T Publication 62411, 54016, and 43801
Network hazardous voltages are present in the BRI, fractional T1/T1, and
The ISDN connection is regarded as a source of voltage that should be
2
n
= 1 to 24