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DB-9 Connector Pinouts for the M7i Routing Engine AUX/MODEM and CONSOLE Ports

 

The ports on the CIP labeled AUX/MODEM and CONSOLE are DB-9 receptacles that accept RS-232 (EIA-232) cable. The AUX/MODEM port connects the Routing Engine to a laptop, modem, or other auxiliary unit, and the CONSOLE port connects it to a management console. The ports are configured as data terminal equipment (DTE). Table 1 describes the DB-9 connector pinouts.

Table 1: DB-9 Connector Pinout

Pin

Signal

Direction

Description

1

DCD

<–

Carrier Detect

2

RxD

<–

Receive Data

3

TxD

–>

Transmit Data

4

DTR

–>

Data Terminal Ready

5

Ground

Signal Ground

6

DSR

<–

Data Set Ready

7

RTS

–>

Request To Send

8

CTS

<–

Clear To Send

9

RING

<–

Ring Indicator