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More details available at  D D-Bus Remote Communication Capabilities  in CCSP Message Bus

Inter Subsystem Communication Architecture

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Some CCSP components such as the TR69 Protocol Agents require session integrity. In other words from the time a session is initiated until the session is terminated, the device must ensure the transactional integrity of all Parameters accessible via the protocol Agent. During the course of a session, all configurable Parameters of the device must appear to the Protocol Agent as a consistent set modified only by the corresponding ACS. Throughout the session the device must shield the ACS from seeing any updates to the Parameters performed by other entities/components. This includes the values of configurable parameters as well as presence or absence of configurable parameters and objects. Session integrity can be achieved by leveraging D-Message Bus signalingsignalling.

Access Control

As with session integrity, some components such as TR69 Protocol Agents require write access control on data model parameters. A TR69 ACS may choose to have exclusive write access on specified parameters and prohibit other components from modifying those parameters. It should be noted that all Protocol Agents have write access to all parameters at all times. This requirement is to allow for cases when a protocol agent may need to assert exclusive write access to the specified parameters.

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