Mitel’s voice service is back up and running after a DDoS attack on its SIP carrier caused an outage on Friday.
In a message sent to customers and posted on social media by Mitel, the firm said that some customers experienced interrupted voice services and call disruptions – before the issues were fixed on the same day.
“We know that our customers’ communications are mission-critical to your business and to your end customers,” Mitel said.
“We take this situation very seriously and will communicate any additional updates quickly.”
Update on today’s phone outage 👇🏻 pic.twitter.com/dXAEk8yf4z
— Mitel® Official (@Mitel) December 17, 2021
Mitel’s service status page shows that the issue lasted for around three hours on Friday. The outage was identified as being the result of a DDoS attack around two hours after the engineers began investigating, with DDoS mitigations then brought into effect.
No further issues have been reported since Friday.