Acknowledgment of receipt of multimedia messages

The sender of a multimedia message is usually about the whereabouts of the message in the dark, if still it has already been downloaded initially stored in a mailbox of the recipient and the recipient was notified neither the message in the mailbox. Therefore, generates a notification (M-dinD1) in the connection unit (M-SRB), which is associated with the receiver (M-UA_B), which then to a transmitter connection unit (M-SRA) and further (to the transmitter M-UA_A ) is sent. The type of the transmitter (M-UA_A) desired notification (M-dinD1) or other may be in the header of the transmission request (M-Sreq), in which the transmitter sends the multimedia message encoded. So that the recipient receives an individual feedback about the whereabouts of the multimedia message.