Cisco 2611 - Router - EN User Manual page 32

Preparing to Connect to a Network
The EIA/TIA-449 standard was intended to replace the EIA/TIA-232 standard, but it was
not widely adopted primarily because of the large installed base of DB-25 hardware and
because of the larger size 37-pin EIA/TIA-449 connectors, which limited the number of
connections possible (fewer than with the smaller, 25-pin EIA/TIA-232 connector).
The network end of the EIA/TIA-449 adapter cable provides a standard 37-pin D-shell
connector. (See Figure 2-9.) EIA/TIA-449 cables are available as either DTE (DB-37 plug)
or DCE (DB-37 receptacle).
Figure 2-9
V.35 Connections
The V.35 interface is recommended for speeds up to 48 kbps, although it is often used
successfully at 4 Mbps.
The network end of the V.35 adapter cable provides a standard 34-pin Winchester-type
connector. (See Figure 2-10.) V.35 cables are available with a standard V.35 plug or
receptacle in either DTE or DCE mode.
Figure 2-10
2-18 Cisco 2600 Series Hardware Installation Guide
EIA/TIA-449 Adapter Cable Connectors, Network End
V.35 Adapter Cable Connectors, Network End
DTE
DCE
DTE
DCE