NEC PASOLINK Training Course page 49

ROI-S04488
Table 3-2 Interface Terminals and Jacks of 1+1 System (5/9)
Terminal
Pins 23 (COM), 24 (NO)
and 25 (NC)
Pins 26 (COM), 27
(No. 2) and 28 (No. 1)
Pins 29 (COM), 30
(No. 2) and 31 (No. 1)
AUX ALM
(D-sub Connector, 25 Pins)
Pin 1
Pin 2 (G)
Pin 3
Pin 4 (G)
Pin 5
Pin 6 (G)
Pin 7
Pin 8 (G)
Pin 9
Pin 10 (G)
Pin 11
Maintenance alarm output*
Normal state :
Alarm state :
Switching answer signal output for transmitter
No. 1 CH selection :
No. 2 CH selection :
Switching answer signal output for receiver
No. 1 CH selection :
No. 2 CH selection :
3
Note:* The BER threshold values and alarm items are set in
factory (default). To change the setting of alarm items
by the PC, refer to Section 3.4.1 "Alarm Table" of this
Manual.
Transmission network surveillance auxiliary
Note: When an optional PM CARD module is mounted,
following input/output terminals (Pins 1 to 21) are
used as housekeeping alarm/control interface.
Input 11
Input 12
Input 21
Input 22
Input 31
Input 32
Input 41
Input 42
Input 51
Input 52
Input 61
Description
3
Between Between
Pins 23 and 24 Pins 23 and 25
Open Closed
Closed Open
Between Between
Pins 26 and 27 Pins 26 and 28
Open Closed
Closed Open
Between Between
Pins 29 and 30 Pins 29 and 31
Open Closed
Closed Open
OPERATION
3-15