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Appendix B, Pinouts
Pin
Name
1
TD+
2
TD–
3
RD+
4, 5
N/A
6
RD–
7, 8
N/A
Pin
1, 2, 3
4
5
6, 7, 8
Information regarding the built-in modem applies to the following
ADTRAN products:
4204659L1
4204659L2
4204659L3
4204659L4
4204659L10 STS-1 AC/DC Redundant with Modem
4204659L11 AC Non-Redundant with Modem with Fans
4204659L12 AC Redundant with Modem with Fans
4204659L13 DC Non-Redundant with Modem with Fans
4204659L14 DC Redundant with Modem with Fans
B-2
Table B-2. LAN Port Pin Assignments
Description
The positive signal for the TD differential pair. This signal contains the serial out-
put data stream transmitted onto the network.
The negative signal for the TD differential pair (pins 1 and 2).
The positive signal for the RD differential pair. This signal contains the serial input
data stream received from the network.
Not used
The negative signal for the RD differential pair (pins 3 and 6).
Not used
Table B-3. Modem Port Pin Assignments
NOTE
AC Non-Redundant Version with Modem
AC Redundant Version with Modem
DC Non-Redundant Version with Modem
DC Redundant Version with Modem
MX2800 STS-1 User Manual
Description
Not used
Tip
Ring
Not used
61204659L1-1A
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