User guide

Preparing to Install the Cisco 2524 and Cisco 2525 Routers 2-11
Preparing to Connect to a Network
Table 2-2 4-Wire 56/64-kbps DSU/CSU Module Network Specifications
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 Network hazardous voltages are present in the BRI, fractional T1/T1, and
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.
1. DDS = digital data system (leased or dedicated lines).
Description Specification
Loop rates DDS
1
: 2.4, 4.8, 9.6, 19.2, 38.4, 56, and 64 kbps
Switched 56: 56 kbps
Data rates 2.4, 4.8, 9.6, 19.2, 56, and 64 kbps
Line requirements DDS: AT&T Publication 62310
Switched 56: AT&T Publication 41458, Sprint TS-0046
Receiver sensitivity –45 dB at all loop rates