Black Box 32144, Manual

Page: 26 / 195

177
APPENDIX C: Connectors, Adapters, and Jumpers
Figure C-1. Connector Pin Assignments.
All connectors are shown as viewed from the back of the modem.
Pins not included in the listings above are not used.
POWER
DIAG PHONE
LEASED
LINE
RX
DIAL
TX
DIAL
DTE
REAR PANEL
DB25
RJ-45
1 2 3 4 5 6 7 8
Dial Line Connector
Pin
3
4
5
6
7
8
Function
A/MI
Ring
Tip
A1/MIC
PC
PR
RJ-11
1 2 3 4 5 6
Phone Connector
Pin
2
3
4
5
Function
A
Ring
Tip
A1
RJ-11
1 2 3 4 5 6
Leased Line
Connector
Pin
2
3
4
5
Function
RXLL
TXLL
TXLL
RXLL
RJ-45
1 2 3 4 5 6 7 8
Pin
1
2
7
8
Function
TXLL
TXLL
RXLL
RXLL
Alternate Leased
Line Connector
(Ignore “RX DIAL” Label)
Diagnostic Connector
Pin Function
1 Constellation Y Output
2 Constellation X Output
4 Ground (for transmit and
receive data and constellation)
5 Receive Data (output from
modem)
6 Transmit Data (input to modem)
RJ-45
1 2 3 4 5 6 7 8
DIAG port always appears to a
system as a DCE port.