Apple has announced an interface change for APNS push notifications, which will become effective in the near future. APNS is primarily used in OSBiz to signal incoming VoIP calls to myPortal to go iOS clients.
Apple's new APNS interface is supported up from OpenScape Business V3 FR1. We recommend to update all customer systems where myPortal to go (iOS) is used as soon as possible. The myPortal to go (iOS) app in App Store is already prepared for this. In case that a customer restricts outgoing internet traffic via firewall settings, a small configuration change may be needed: While Apple's old push notification protocol uses the port TCP/2195, the new protocol uses TCP/443.
Android installations are not affected.