PBX (Private Branch Exchange) telephones experienced an issue.
All PBX telephones in Campus SaintJean were affected by this outage.
The affected users were not able to use their PBX telephones to perform their daily activities.
Start: 2015/05/09 11:00 IST received reports of PBX (Private Branch Exchange) telephones located at Campus SaintJean were unavailable.
2015/05/11 08:30 IST began investigating this issue..
2015/05/11 08:45 Further investigation determined this was a third party vendor issue and it was escalated.
2015/05/11 11:05 The cause was discovered to be faulty power supplies on a PBX switch. Replacement parts were obtained and being delivered to the site for installation.
End: 2015/05/11 13:00 The faulty parts were replaced and service was restored.
A PBX switch became unavailable due to both redundant power supplies failing at the same time.
The faulty power supplies were replaced.