Notification Title:  Horizon Product notice for Voice Migration

As a part of the ongoing commitment to the Cloud telephony product ,  Horizon, the network  will be undertaking a migration activity of all voice and signalling traffic. Although the anticipated impact has been kept to a minimum, the process of migrating this traffic carries some risk and your service will be impacted which is scheduled between the 24th October and the 7th of Nov, consisting of 5 individual change control windows.

During the maintenance windows there are two key time slots where service will be impacted:

00:00 – 00:15 the update being deployed on the network will cause devices to become unregistered. Horizon Companies will be unable to receive and place calls during this time and any programmed diverts or schedules will also be inoperative.

00:15 – 01:15 devices will automatically reregister based on an internal timer that refreshes its registration once an hour. Hence, in the worst case, a devices unregistered status may last up to an hour. Any divert or schedule setting will now operate as programmed.

The vast majority of Companies and users should see no real impact as all handsets will automatically reregister with an hour of the initial 15 minute period from midnight completing.