We currently have a Nortel BCM 400 as our phone system. To say the least, I am not very familiar with the system. Lately, we have been having all active calls drop simultaneously at what seems like random times throughout the day.
After checking the alarms, I see the following alarms around the time of the dropped calls:
1. Alarm ID 44: Core Telephony - "Remote Alarm Indication" long term alarm threshold has been exceeded on the DTM.
Proposed resolution is to check cabling from DTM modules to the external network and run loopback tests on the circuit.
2. Alarm ID 367: Core Telephony - Digital Trunk Media bay module reset.
This one follows the first one every time. The system is not rebooting and it seems to only happen on one of the two PRI lines we have. I am guessing that this second alarm is due to the PRI going out temporarily during the event that causes the first alarm.
I think the place to start would be running the loopback test on the problem PRI. Can this be done with active calls or should this be done after hours when the system is not in use?
After checking the alarms, I see the following alarms around the time of the dropped calls:
1. Alarm ID 44: Core Telephony - "Remote Alarm Indication" long term alarm threshold has been exceeded on the DTM.
Proposed resolution is to check cabling from DTM modules to the external network and run loopback tests on the circuit.
2. Alarm ID 367: Core Telephony - Digital Trunk Media bay module reset.
This one follows the first one every time. The system is not rebooting and it seems to only happen on one of the two PRI lines we have. I am guessing that this second alarm is due to the PRI going out temporarily during the event that causes the first alarm.
I think the place to start would be running the loopback test on the problem PRI. Can this be done with active calls or should this be done after hours when the system is not in use?
