Cisco CPA2501 User Manual page 25

Preparing to Connect to a Network
Figure 2-1 Serial Transition Cables
Router connections
EIA/TIA-232 EIA/TIA-449 V.35 X.21 EIA-530
Network connections at the modem or CSU/DSU
Although attempting to manufacture your own serial cables is not recommended (because
of the small size of the pins on the DB-60 serial connector), cable pinouts are provided in
the appendix "Cable Specifications." To order a cable, refer to the section "Obtaining
Service and Support" in the "Overview of the Router" chapter.
Preparing to Install the Router 2-11