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2017/07/08 23:00 (Saturday) - 2017/07/09 16:00 (Sunday) - Maintenance of Cisco IP phone system (with phone number 3917xxxx)

We will carry out a necessary upgrade of the Cisco IP phone system in the University (phone numbers start with 3917, around 5,000 in total) on July 8-9, 2017. The service of all IP phones will be interrupted during the upgrade in the following period-
Date: July 8 - 9, 2017 (Saturday - Sunday)
Time: 11:00 pm (July 8) to 4:00 pm (July 9)

The connectivity of all IP phones will be affected and colleagues may not be able to receive incoming calls or make outgoing calls during the upgrade. The service of all IP phones will be resumed by July 9, 2017 NOON and the voicemail will be resumed by 4:00 pm on the same date.

We apologize for any inconvenience that may cause. In case of questions, please feel free to contact our Service Desk at 3917 0123 or


Allen Chu
Unified Communications Team
Information Technology Services