Normal Status Lights - Iwatsu DTI-P / T Card

Possible Failures

Light
Status
Action to take

REDALM

Red solid on

Red alarm. No signal from carrier. Likely a complete circuit failure or break. The most severe alarm. Report to your carrier.

YELALM

Yellow solid on

Carrier is not receiving signal but your equipment is getting this signal from the carrier. Report to your vendor and carrier.

ERRST

Red solid on

PRI is running CRC or framing errors errors likely due to improperly configured carrier equipment or poor line quality. Report to your carrier

 

Complete Description of Lights

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 Bipolar Violation 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 (This T1 circuit is the clock source for the ADIX system.)

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 connected

Missing

N/A

 

OPR1

Layer 2 Connection Status

Layer 2 connected

Missing

N/A

 

OPR2

Initialization Status

N/A

No Data Transmission

Initialization Data Transmission

MB

Make Busy LED

Busy

Idle

Make Busy

 

 

 

Normal lights pictured. The MB and CKLM may or may not be lit depending on traffic and quantity of PRI cards.

 

Infotel Systems - Richmond, Virginia - Business Telephone Systems, Voice & Data Networks, Cabling, Carrier Services  804-266-6600