IWATSU DTI-PT Card
Normal Status Lights

Light	STATUS	Description & Suggested Action
REDALM	Red (Solid)	Red alarm. No signal from Carrier. Likely a complete circuit failure or break. The most severe alarm. // Call your Carrier.
YELALM	Yellow (Solid)	Carrier is not receiving signal but your equipment is getting this signal from the Carrier. // Call your Vendor & Carrier.
ERRST	Red (Solid)	PRI is running CRC or framing errors errors likely due to improperly configured Carrier equipment or poor line quality. // Report to your Carrier.

LED	Description	Status
		On	Off	Flash
REDALM	Red Alarm LED	Red Alarm	No Red or Blue Alarm	AIS (Blue) Alarm
YELALM	Yellow Alarm LED	Yellow Alarm	No Yellow Alarm	N/A
ERRST	Error Status LED	CRC/Framing Error or BipolarViolation Detected	No Errors	N/A
M/S	Master/Slave Mode Setting Indication LED	Master Mode Setting	Slave Mode Setting	N/A
CLKM	Clock Master Indication	Clock Source	Not Synchronized	Synchronized with master (500ms on 500 ms off). This is the slave card in a 2 or more T1/PRI system.
OPR0	Layer 1 Connection Status	Layer 1 issue	normal	N/A
OPR1	Layer 2 Connection Status	Layer 2 issue	normal	N/A
OPR2	Initialization Status	N/A	No Data Transmission	Initialization Data Transmission
MB	Make Busy LED	Busy with calls	Idle, no calls	In Make Busy and no active calls, new calls are prevented.

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