Cisco NPE-175 Installation And Configuration Manual page 60

Connection Equipment and Specifications
Note
Refer to
to connect terminals and modems to the Cisco 7200 series routers. The cable you use may be a roll-over
cable or a straight cable.
Table 5-9
Adapter
1
2
3
4
5
6
7
8
1. The female data terminal equipment (FDTE) adapter that is available from Cisco is labeled "Terminal".
2. The MMOD adapter that is available from Cisco is labeled "Modem".
A roll-over cable can be detected by comparing the two modular ends of the cable. Holding the cables
in your hand, side-by-side, with the tab at the back, the wire connected to the pin on the outside of the
left plug should be the same color as the pin on the outside of the right plug. If your cable was purchased
from Cisco, pin 1 will be white on one connector, and pin 8 will be white on the other (a roll-over cable
reverses pins 1 and 8, 2 and 7, 3 and 6, and 4 and 5). (See
Figure 5-12
Network Processing Engine and Network Services Engine Installation and Configuration
5-18
When connecting to an auxiliary port on a Cisco 7200 VXR router, the port will not function at baud
rates higher than 19.2k. If the baud rate on the connecting device is set higher than 19.2k, either
garbled text or nothing will be displayed on the screen.
Table 5-9 for a list of the pins used on the RJ-45-to-DB-25 adapters, used with an RJ-45 cable,
Pinouts for the RJ-45-to-DB-25 Adapters
DTE M/F Pins
4
20
2
7
7
3
6
5
Identifying a Roll-Over Cable
Pin 1
1
DCE M/F Pins
5
6
3
7
7
2
20
4
Figure
Pin 1 and pin 8
should be the
same color
Chapter 5 NPE-G1 Overview
MMOD Pins
5
8
3
7
7
2
20
4
5-12.)
Pin 8
2
OL-4448-12