Table 4-6 Pin assignment (MDI/MDO cable) (continued)
Point on Connector Signal Name Description
8 MDO 1 return Miscellaneous Discrete Output 1 return,
contact normally open
9 nc Not connected
10 MDI 4 return Miscellaneous Discrete Input 4 return
11 MDI 3 return Miscellaneous Discrete Input 3 return
12 MDI 2 return Miscellaneous Discrete Input 2 return
13 MDI 1 return Miscellaneous Discrete Input 1 return
14 MDO 4 common Miscellaneous Discrete Output 4,
common point of relay contact
15 nc Not connected
16 MDO 3 common Miscellaneous Discrete Output 3,
common point of relay contact
17 nc Not connected
18 MDO 2 common Miscellaneous Discrete Output 2,
common point of relay contact
19 nc Not connected
20 MDO 1 common Miscellaneous Discrete Output 1,
common point of relay contact
21 MDI 4 input Miscellaneous Discrete Input 4 input
22 MDI 3 input Miscellaneous Discrete Input 3 input
23 MDI 2 input Miscellaneous Discrete Input 2 input
24 MDI 1 input Miscellaneous Discrete Input 1 input
25 nc Not connected
Cable data
Preferably stranded 24 AWG (0.20 mm
2
) to 20 AWG (0.51 mm
2
) wires with proper
insulation should be used.
Cable connection
Please connect the MDI/MDO cable as shown in the figure below.
System cabling
MDI/MDO interface
....................................................................................................................................................................................................................................
4-20
Alcatel-Lucent - Proprietary
See notice on first page
365-312-802R7.2
Issue 4, June 2007
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