Multiple device messaging is when a message can be delivered to all clients that are logged in. This feature is available now for Jabber 11.5 and higher but for Webex Messenger/Jabber deployments only.
Release Notes for Cisco Jabber for Windows 11.5.x - Cisco
Multiple Device Messaging (Cloud)—Users who are signed into multiple devices can now see all sent and received IMs on each device regardless of which device is active. Notifications are synchronized; if an IM is read on one device, it shows as read on other signed-in devices. This feature is enabled by default, but can be disabled with the Disable_MultiDevice_Message parameter. The following limitations apply:
- Clients must be signed-in. Signed-out clients do not display sent or received IMs or notifications.
- File transfer between multiple devices is not supported—Files are available only on the active devices that sent or received the file.
- Group chat is not supported.
- Multiple device messaging cannot be enabled if AES encryption is required.
- Applies to cloud deployments only.
