Multiple Device Messaging Overview
With Multiple Device Messaging (MDM), you can have one-to-one instant message (IM) conversations tracked across all devices on which you are currently signed in. If you are using a desktop client and a mobile device, both of which are MDM-enabled, messages are sent, or carbon copied, to both devices. Read notifications are also synchronized on both devices as you participate in a conversation.
MDM lets you maintain an IM conversation while moving between any of your devices. For example, if you start an IM conversation on your desktop computer, but you have to leave your desk for a meeting, you can you can continue the IM conversation on your mobile device. Clients must be signed-in to be MDM-enabled. Signed-out clients do not display sent or received IMs or notifications.
MDM supports quiet mode, which helps to conserve battery power on your mobile devices. The Jabber client turns quiet mode on automatically when the mobile client is not being used. Quiet mode is turned off when the client becomes active again.