The following is not supported on the Avaya H175 Video Collaboration Station in Rainy day mode:
Message Waiting Indication (MWI).
one-X Portal and Voicemail Pro.
Ad-hoc conferencing because local three-way conferencing is not supported.
Deploying an Avaya H175 Video Collaboration Station as a Centralized user and another Avaya H175 Video Collaboration Station as an IP Office user in the same branch.
The following behaviors apply when the Avaya H175 Video Collaboration Station is deployed as a Centralized user:
Rainy day mode with IP Office is treated in the same way as it is with a third party SIP survivability server.
The Avaya H175 Video Collaboration Station is not considered an IP Office user when it fails over to IP Office in Rainy day mode.
IP Office treats an Avaya H175 Video Collaboration Station Centralized user and 9608, 9611, 9621, and 9641 SIP Centralized users in the same way.