DTE-to-DCE Wiring
Jul 22,2008 00:00 by admin

DTE-to-DCE Wiring

A DTE-to-DCE connection should not have rolls. The same effect can be achieved with having two rolls and the connector. Cisco routers come with a kit for console and auxiliary port cabling. The kit includes the following:

  • RJ-45-to-RJ-45 rollover cable

  • RJ-45-to-DB-9 female DTE adapter (labeled "TERMINAL")

  • RJ-45-to-DB-25 female DTE adapter (labeled "TERMINAL")

  • RJ-45-to-DB-25 male DCE adapter (labeled "MODEM")

The RJ-45-to-DB-9 female DTE adapter is typically used to connect a PC being used as a console terminal. The RJ-45-to-DB-25 female DTE adapter is used to connect a terminal to the console or auxiliary port. The RJ-45-to-DB-25 male DCE adapter is used to connect the auxiliary port to a modem. Table 3-2 describes the port types for console and auxiliary ports on Cisco routers.

Table 3-2. Port Types for Console and Auxiliary Ports on Cisco Routers
 

Routers

DB-25

RJ-45

Console port

DCE

DTE

Auxiliary port

DTE

DTE