SIP Trunk Maintenance Work

Wednesday morning, March 4th 2015 between 5:00AM and 7:00AM ITS/TNS will perform code updates on several session border controllers
that provide SIP Trunk service to the following list of customers. During this time, users could experience a momentary delay with voice services.

Lion Line
Mitel/ I2
Services and Solutions(SAS)-Call Center ITS Service Desk

More information: SIP Trunk Maintenance Work

Story added 2. March 2015, content source with full text you can find at link above.