Alcatel-Lucent 1643 AMS Installation Manual page 143

System cabling
X.21 interfaces (X4X.21 card)
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Purpose
X.21 tributaries can be connected to these interfaces. This option card can be regarded
as X.21 Data Circuit Equipment (DCE).
Connector data
The X.21 connectors which are located on the X4X.21 option card are 15-pin SUB-D
female connectors.
Figure 4-46 X.21 connector
Table 4-16
Point on Connector
Cable connection
Please connect the X.21 cables as shown in the figure below.
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365-312-802R7.2
Issue 4, June 2007
Pin assignment (X.21 cables)
Signal Name
1 GND
2 TX N
3 CD N
4 RX N
5 ID N
6 TD N
7 nc
8 GND
9 TX P
10 CD P
11 RX P
12 ID P
13 TD P
14 nc
15 nc
Alcatel-Lucent - Proprietary
See notice on first page
Description
Shielded ground
Transmit-Data Negative
Control-Data Negative
Receive-Data Negative
Indication-Data Negative
Timing-Data Negative
Not connected
Signal ground
Transmit-Data Positive
Control-Data Positive
Receive-Data Positive
Indication-Data Positive
Timing-Data Positive
Not connected
Not connected
4-45