Installation guide

1-14 Cisco 4000 Series Installation Guide

• Dual-port high-speed synchronous serial and 16-port low-speed

synchronous/asynchronous serial. The high-speed ports supports EIA/TIA-232,

EIA/TIA-449, V.35, X.21, NRZ/NRZI, DTE/DCE, or EIA-530 DTE interfaces. The

low-speed ports support EIA/TIA-232, V.35, or X.21 interfaces in DTE or DCE mode.

Each low-speed port can be individually conﬁgured for synchronous or asynchronous.

• Single-port HSSI

• Single-port and dual-port Token Ring

• Dual attachment single-mode FDDI

• Single attachment or dual attachment multimode FDDI

• Four-port or eight-port ISDN BRI

• Four-port balanced or unbalanced G.703/G.704

• Single-port channelized T1/ISDN PRI

• Single-port balanced or unbalanced channelized E1/ISDN PRI

• Single-port ATM with single-mode OC-3 and long-reach capability, multimode OC-3,

DS-3, or E3 interfaces

Note For information about modules released after publication of this guide, see the

conﬁguration note packet shipped with your router.

Note EIA/TIA-232 and EIA-TIA-449 were known as recommended standards RS-232

and RS-449 before their acceptance as standards by the Electronics Industries Association

(EIA) and Telecommunications Industry Association (TIA)

Figure 1-1 shows the front panel of a Cisco 4000 series router.

Figure 1-1 Cisco 4000 Series Chassis—Front Panel