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Halaman Cetak
2-Wire Switched 56-kbps DSU/CSU WAN Module
The 2-wire switched 56-kbps DSU/CSU WAN module includes an RJ-11 port for
connection to a WAN. Cables are not included with the modules; however, port pinouts are
listed in the section "Fractional T1/T1 DSU/CSU Module Port Pinouts" in the appendix
"Cabling Specifications for the Cisco 2524 and Cisco 2525 Routers."
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
field by the user in the manufacturer's defined operator access area. Check the equipment
manufacturer to verify/confirm that your equipment is suitable for user-installed
application cards. (To see translated versions of this warning, refer to the appendix
"Translated Safety Warnings.")
Table 2-2 lists network specifications to consider before connecting the module to a
network.
Table 2-1
Description
Loop rates
Data rates
Line requirements
Receiver sensitivity
1. kHz = kilohertz.
Network hazardous voltages are present in the BRI, fractional T1/T1, and
This card is intended to be installed in UL- and CSA-certified equipment in the
2-Wire Switched 56-kbps DSU/CSU WAN Module Network
Specifications
Specification
56 kbps
56 kbps
Northern Telecom Datapath
Technology, Bellcore TR-EOP-000277
–42 dB at 80 kHz
Preparing to Install the Cisco 2524 and Cisco 2525 Routers 2-9
Preparing to Connect to a Network
1