•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 1-1shows the front panel of a Cisco 4000 series router.
Figure 1-1 Cisco 4000 Series Chassis—Front Panel
