Hotfix to increase stability and bugs related to OAuth, callback to custom devices, protocol headers

- improved behaviour on network change while in a call - interprete all number types for local contacts - fix a problem with number management for parallel ringing - fix deletion of numbers assigned to features

- in some scenarios incoming calls could not be answered when phone is locked - fixes a potential crash on feature activation for DND - enhances the status display of call queue feature after changing agent state

- read only group features - prevent deflect call for call queue calls - chat group optimizations - VoIP registration issues fixed - multiple bug fixes

New features: - connected line presentation for VoIP calls - admin can end a meeting for all participants - sent meeting invitation via WhatsApp - recents list: directly call back contact number that called Optimised call history Reworked contact detail view

- customisable function buttons - inform CallKit about hold/resume state of active calls - adjustments to iOS 18 - in call history provide information for call queue calls that requested a callback - usability enhancements and bugfixes

- configurable dialing of outside line - fixed codec priorization - stability improvements

- fixes a potential crash when browsing the call history list

- manage guest users for meetings - improved call log sync with server - proper setting of night mode for the system - landscape mode for peer to peer video calls - usability improvements

- improved handling of meeting scenarios - fixes potential crashes when bringing app to foreground or click on push notification - better contact handling: integrate local contacts in dialer search, set locals as favorites

- fix: proper handling of call center call queues when user is a supervisor

- improved IPv6 handling for NAT64 scenarios - stability improvements on startup, reduced UI lagging - multiple UI improvements for chat - fix: handover button in call selection menu - fix: call queue agent state for supervisors

- VoIP registration optimization, register faster in network change scenarios - add button in contact details view to remove contacts from favourites - CallKit wording adjusted for call queues - fix for potential crash introduced with iOS 17.2+

Meeting chats: - Embed chat view into conference view - Start chat from ad-hoc meetings - Chat with meeting guest users - Access meetings from chat list and vice versa Full iOS 17 support Bug fixes and stability improvements

- fixes a problem with VoIP not being registered when app coming to foreground

- fixes a problem with VoIP registration after receiving a push notification

- fixes a problem with interrupted DNS queries - making calls on iPad could not work in certain scenarios - adjusted CallKit handling for incoming calls

- OAuth2 authentication mode with and without two-factor-auth - QR code login - improved incoming call handling

Usability improvements and bug fixes: - start video from CallKit call view - switching audio device when bluetooth is active - proper fallback scenarios when VoIP calls are not possible - fixes a display problem when sending an image in chat

- support custom WebMeet links in meetings - mark all as read function for call history - coloured indication of missed calls - rich presence enhancements - multiple fixes and stability improvements

- fixes a problem with call hangup for second call - support of direct call for joining meeting with audio only - improved call mode display for certain configuration scenarios

- fixes a problem with unattended transfer

- unified WebMeet links on service provider or enterprise level

* Mobile transfer for mobile centrex systems " - Unattended and attended transfer (requires VAS 7.5) - New transfer target selection dialogs - Real-time transfer result * Full HD video resolution fallback to 720p * requirement iOS 14 or newer

Collaboration and meetings: - ad-hoc conferences - handle calls while in a conference: answer, hold, resume, switch between conference and call - set/unset admin role for any conference participant - call and invite people to a conference - access conferences from call history - compatibility with VAS release 7.4 Improved VoIP call handling - faster registration - proper fallback to call through - handle CallKit events to reset audio Extended parallel ringing handling Usability and stability improvements