Architecture overview
=====================

The VVM daemon implements the Visual Voicemail Service with integration
into the Modem Manager telephony stack.


                    +-----------------------+
                    |  Message application  |
                    +-----------------------+
                                ^
                                | Session D-Bus
                                |
        +------------------------------------------------+
        |                                                |
        |                   VVM daemon                   |
        |                                                |
        +------------------------------------------------+
        |                                                |
        |         Modem Manager / oFono plugin           |
        |                                                |
        +------------------------------------------------+
                                ^
                                | System D-Bus
                                |
        +------------------------------------------------+
        |                                                |
        |          Modem Manager telephony stack         |
        |                                                |
        +------------------------------------------------+
