Presence Services communicates with the Avaya Push Notification provider cloud service using HTTPS. To use the Avaya Push Notification provider, your enterprise network firewall and the HTTP proxy server must allow outbound HTTPS connections to the Avaya Push Notification provider address, which is pnp.avaya.com:443.

For applications other than Avaya Workplace Client for iOS and Avaya Workplace Client for Android, you must use a third-party provider. The firewall and the HTTP proxy of your enterprise must allow outbound HTTPS connections to this push notification provider.

For iOS and Android devices running in your enterprise network, Apple and Android push notifications rely on connectivity between iOS devices and the Apple Push Notification service network and between Android devices and the Google Push Notification service network. For more information about port configuration required to receive Apple push notifications, see https://support.apple.com/en-us/ht203609.