Table 2-16 Maintenance Switch (Sw4) Settings Of Tbri/4 Card; Table 2-17 Circuit Select Switch (Sw1) Settings Of Tbri/4 Card; Table 2-18 Led Indication Of Tbri/4 Card - Panasonic DBS 576 Technical Manual

Section 300-Installation
Table 2-16. Maintenance switch (SW4) settings of TBRI/4 card
Setting Description
ON Card is in closed status, and can be mounted and removed when the power is ON.
(Sending/receiving of calls is disabled. If this is set during speech, sending/receiving
of calls is disabled after speech ends.)
OFF Normal operation (This switch is set to OFF for normal operation.)
Table 2-17. Circuit select switch (SW1) settings of TBRI/4 card
Switch Position Description
0 OFF (default setting when unit is shipped)
1 1st interface condition displayed by LAYER1 LED and LAYER2 LED
2 2nd interface condition displayed by LAYER1 LED and LAYER2 LED
3 3rd interface condition displayed by LAYER1 LED and LAYER2 LED
4 4th interface condition displayed by LAYER1 LED and LAYER2 LED
5 to 7 Not used
Table 2-18. LED indication of TBRI/4 card
LED indication Description
LED1 Turns ON when trunk is in use.
(LINE BUSY)
LED2 Turns ON when network synchronization clock is sent.
(SYNC)
LED3 Turns ON when synchronization is established.
(LAYER1)
LED4 Turns ON when data link (DL) is established.
(LAYER2)
576-13-300 DBS 576 (USA), issued 6/2/98
Chapter 2. System Overview
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