Status LED's For Iwatsu DTI-P / T Card
Possible Failures
Light |
Status |
Action to take |
| 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 on | Carrier is not receiving signal but your equipment is
getting this signal from the carrier. Call 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 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 (ThisT1 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 with calls | Idle, no calls | In make busy and no active calls. New calls prevented. |
The story Behind "Status Lights"