Cisco 2525 Підготовка до встановлення - Сторінка 11

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Table 2-2

Description

Loop rates

Data rates

Line requirements

Receiver sensitivity

1. DDS = digital data system (leased or dedicated lines).

Fractional T1/T1 DSU/CSU WAN Module

The fractional T1/T1 DSU/CSU WAN module includes an RJ-48C port. Cables are not

included with the module; 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.")

Table 2-3 lists network specifications to consider before connecting the fractional T1/T1

DSU/CSU WAN module to a network.

4-Wire 56/64-kbps DSU/CSU Module Network Specifications

Specification

DDS

: 2.4, 4.8, 9.6, 19.2, 38.4, 56, and 64 kbps

Switched 56: 56 kbps

2.4, 4.8, 9.6, 19.2, 56, and 64 kbps

DDS: AT&T Publication 62310

Switched 56: AT&T Publication 41458, Sprint TS-0046

–45 dB at all loop rates

Network hazardous voltages are present in the BRI, fractional T1/T1, and

Preparing to Install the Cisco 2524 and Cisco 2525 Routers 2-11

Preparing to Connect to a Network