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Dial Line Connector
1 2 3 4 5 6 7 8
RJ-45
DTE
Diagnostic Connector
1 2 3 4 5 6 7 8
RJ-45
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)
DIAG port always appears to a
system as a DCE port.
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.
APPENDIX C: Connectors, Adapters, and Jumpers
Pin
Function
3
A/MI
4
Ring
5
Tip
6
A1/MIC
7
PC
8
PR
REAR PANEL
DB25
Phone Connector
1 2 3 4 5 6
RJ-11
TX
RX
POWER
DIAG
DIAL
DIAL
Leased Line
Connector
1 2 3 4 5 6
RJ-11
Alternate Leased
Line Connector
(Ignore "RX DIAL" Label)
Pin
1
1 2 3 4 5 6 7 8
2
RJ-45
7
8
Pin
Function
2
A
3
Ring
4
Tip
5
A1
LEASED
LINE
PHONE
Pin
Function
2
RXLL
3
TXLL
4
TXLL
5
RXLL
Function
TXLL
TXLL
RXLL
RXLL
177
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