User guide

Release Notes for Cisco IOS Release 12.4T

OL-8012-09 Rev. B0

Platform-Specific Information

• Synchronous serial interfaces on serial WICs

• Asynchronous serial interfaces on serial WICs

• ISDN WICs-ISDN dialup and ISDN leased line (IDSL) at 144 kbps. Encapsulation over ISDN

leased line: Frame Relay and PPP

• One auxiliary (AUX) port (up to 115.2 kbps asynchronous serial)

• One console port

• One internal expansion slot—Supports hardware-assisted services such as encryption (up to T1/E1)

and compression

• One security slot that supports Kensington or similar lockdown equipment

• DRAM memory—Cisco 1751: 64 MB default, expandable to 128 MB; Cisco 1751-V: 64 MB

default, expandable to 128 MB

• Flash memory—Cisco 1751: 32 MB default, nonexpandable; Cisco 1751-V: 32 MB default,

nonexpandable

• Desktop form factor

The Cisco 1751 router also supports any combination of one or two of the following WICs, which are

shared with the Cisco 1600 series, Cisco 1720, Cisco 2600 series, and Cisco 3600 series routers:

• WIC-1T: one-port high-speed serial (synchronous/asynchronous) (T1/E1)

• WIC-2T: two-port high-speed serial (synchronous/asynchronous) (T1/E1)

• WIC-2A/S: two-port low-speed serial (synchronous/asynchronous) (up to 128 kbps)

• WIC-1ADSL: one-port ADSL WIC

• WIC-1ADSL-I-DG: one-port ADSLoISDN WIC

• WIC-1ADSL-DG: one-port ADSLoPOTS WIC with dying gasp

• WIC-1B-S/T: one-port ISDN BRI S/T interface card

• WIC-1B-S/T-V3: one-port ISDN WIC (dial and leased line)

• WIC-1B-U: one-port ISDN BRI U with integrated NT-1 (WIC-1B-U-V2 replaces WIC-1B-U in

Cisco IOS Release 12.3)

• WIC-1B-U-V2: one-port ISDN BRI NT-1 WIC for the Cisco 1700, 2600, 3600, and 3700 series

• WIC-1DSU-56K4: one-port integrated 56/64-kbps 4-wire DSU/CSU

• WIC-1DSU-T1: one-port integrated T1/fractional T1 DSU/CSU

• WIC-1DSU-T1-V2: updated one-port T1/fractional T1 DSU/CSU WIC

• WIC-1ENET: one-port 10BASE-T Ethernet

• WIC-1SHDSL: one-port G.SHDSL WIC

• WIC-1SHDSL-V2

• WIC-1AM: one-port analog modem

• WIC-2AM: two-port analog modem

• WIC-4ESW: four-port Ethernet switch WIC