Juniper Networks M160 Fast Ethernet 48-port Cable Pinouts, DB-25 Pin Signal 35 Pin Description

M160 Internet Router Hardware Guide

DB-25 Pin	Signal	V.35 Pin	Description
12	TC	AA	Transmit Clock
17	RC	V	Receive Clock
9	RC	X	Receive Clock
1	FGND	A	Protective Ground
7	GND	B	Signal Ground
8	DCD	F	Data Carrier Detect

Table 35: DB-25 Connector to DB-15 (X.21) Connector Pinout

DB-25 Pin	Signal	DB-15 (X.21) Pin	Description
1	FGND	1	Protective Ground
7	GND	8	Signal Ground
2	T	2	Transmit Data
14	T	9	Transmit Data
3	R	4	Receive Data
16	R	11	Receive Data
4	C	3	Request To Send
19	C	10	Request To Send
8	I	5	Data Carrier Detect
10	I	12	Data Carrier Detect
17	S	6	Receive Clock
9	S	13	Receive Clock

Fast Ethernet 48-port Cable Pinouts

The Fast Ethernet 48-port PIC has four VHDCI connector ports on its faceplate (see Figure 121), each of which accepts one of the four RJ-21 cables supplied with the PIC (see Figure 122). Each VHDCI connector port supports 12 Ethernet ports.

274 Fast Ethernet 48-port Cable Pinouts