Abstract: Systems and methods for managing voice data in network-based instant connect communications. In an instant connect call, instead of immediately playing voice data when it is received, the voice data is buffered on the recipient's device and the recipient is notified of the incoming voice data. The recipient may then play the voice data at a later time before the instant connect call session times out. The recipient may also take the floor and delete the buffered voice data, reject the voice data, or ignore the voice data until the session times out and the buffered voice data is deleted. The recipient can also prevent voice data from being delivered by selecting an answer mode of operation of the recipient's device that enables the recipient to approve senders before voice data is transmitted.

Abstract: Messages are received at a server and processed to generate data that may include a call back number, envelope information or contact information. Generated data is transmitted to a device that displays a visual notification that includes some of the generated data. The notification may be displayed on the device even if the device is unable to retrieve the message over a data channel. The notification alerts the user that a message is waiting for the user. If the device is subsequently within a data network, the device automatically retrieves the message over a data channel. The device can also establish a voice call with a message server to retrieve the message and can record the message. The device can establish the voice call with the server at a call back number and/or issue a DTMF message request to directly access the message without requiring menu navigation.