qu'est ce que tu veux dire par "système de SMS"? Tu parles des classes 0 flash, 1 terminal, 2 simcard, 3 PDA?
0 ça veut dire que le message est affiché à l'écran, quand il est lu il est supprimé,
1 ça veut dire que le message est destiné au terminal, c'est le hardware qui le prend en charge (ça peut servir pour les update du fireware et des trucs comme ça)
2 ça veut dire que c'est la carte SIM qui reçoit le message et le traite (l'affiche, le stock...)
3 ça veut dire que le téléphone sert de modem et fait suivre le message à un PDA qui lui est connecté (en port IrDA, en connection par cable, en Wifi, Bluetooth ou 802.11 plus tard...)
Pour le MMS
QUOTE |
Multimedia Messaging Service (MMS) is a store and forward messaging service that allows mobile subscribers to exchange multimedia messages with other mobile subscribers. As such it can be seen as an evolution of SMS, with MMS supporting the transmission of additional media types:
text
picture
audio
video
combinations of the above
Multimedia Messaging Service (MMS) is an important emerging service, which allows the sending of multiple media in a single message, and the ability to send a message to multiple recipients.
The originator can easily create a Multimedia Message, either using a built-in or accessory camera, or can use images and sounds stored previously in the phone (and probably downloaded from a web site).
Even if the recipient phone is not switched on, the Multimedia Message will be stored and sent to the recipient as soon as they switch on their phone. In a non-roaming case, it is expected that the subscriber will allow a Multimedia Message to be downloaded automatically to their phone and then they would be notified and could see the Multimedia Message immediately.
A number of Multimedia Messages can be stored in the users handset and reviewed or forwarded at a later date.
Each Multimedia Message contains a number of pages (think of a PowerPoint slide show as an analogy). On each page, there can be one image and one set of text. An audio file can also be attached. The time that each “page” is displayed can be specified, so the user experience is somewhat like a slide show.
For a clearer example of this, visit Ericsson's MMS demonstration website or view the Nokia video demonstration
So how does MMS work?
Depending upon the operator, a typical example of how an MMS message can be sent and received between two compatible MMS phones is detailed below:
STEP 1: Using an MMS compatible phone, take a photo.
STEP 2: Use your phone to personalise the message by adding text, sound clip or your own voice.
STEP 3: Send the MMS message
On an compatible phone, the MMS message will appear with a new message alert. The user will see the subject, the senders number and the size of the picture message. The picture message will open on the screen, the text will appear below the image and the sound will begin to play automatically.
If the message is sent to a non-compatible MMS phone the user will receive a message along the lines of:
"You have been sent a picture message!"
They will then be given a website address, and possibly and username and password on which they can view the message.
Again, this is a simple example and may differ from operator to operator. |