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Table 5: RS-232 Connector Interface Signals
DB-25 Pin
To/From CTP
1
—
2
To
3
From
4
To
5
From
6
From
7
—
8
From
15
From
17
From
20
To
22
From
24
To
Voice Interface Signal Pinouts
Table 6: Voice Interface Signals
DB-25 Pin
To/From CTP
1
—
2
To
3
From
4
To
5
From
6
From
9
From
Copyright © 2015, Juniper Networks, Inc.
Description
Shield
Transmitted data—A
Received data—A
Request to send—A
Clear to send—A
Data set ready—A
Signal ground
Data carrier detect—A
Transmit signal element timing—A (DCE)
Receive signal element timing—A
Data terminal ready—A
Data set ready—B
Transmit signal element timing—A (DTE)
Table 6 on page 27
lists the voice interface signal pinouts for the 25-pin connector.
Description
Shield
Channel 0 voice RX—A
Channel 0 voice TX—A
Channel 1 voice signaling input A
Channel 1 voice signaling output A
Channel 0 voice signaling output A
Channel 1 voice TX—A
Chapter 5: Cable and Pinout Specifications
Circuit
—
BA
BB
CA
CB
CC
Ground
CF
DB
DD
CD
CC
DA
Circuit
—
Channel 0
Channel 0
Channel 1
Channel 1
Channel 0
Channel 1
27
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