Configuration; Refs. 769501-769502 Activation; Customization; Software Download From The Olt - Televes 769501 User Manual

5. Configuration

5.1 Refs. 769501-769502 activation

The Refs. 769501-769502 activation process has a distributed set of procedures that allow the connection of an inactive equipment to a PON net-
work. This configuration is done following the procedure described in the OMCI protocol.

5.2 Customization

For customization process, the requirements specified in the G.984.4, G.984.5 and 'Implementer's Guide' in the G.984.4 v1 are taken into account.

5.2.1 Software download from the OLT

The software download is made following the OMCI-based procedure included in the 'Implementer's Guide' of the G.984.4 Recommendation.
The Managed Entity (ME) in charge of managing the software download is named Software Image. Per each ME containing independently-man-
ageable software, the Refs. 769501-769502 creates two software images. Each image will have three attributes:
Valid - if it has been verified that it's content is an image with executable code;
Committed - if once the Refs. 769501-769502 is rebooted, it is loaded and executed;
Active - if it is loaded and it is being executed in the Refs. 769501-769502.
There can be only one active image and only one commited image at a given moment. The Refs. 769501-769502 goes through a series of states in
order to download and activate a software image. Each state is defined according to the states of the variables of both images. The OLT controls
the Refs. 769501-769502 state through a series of commands:
Start downloaad
It starts the software download sequence. This action is only valid for inactive and non-commited software images;
Download section
It downloads a section of a software image. This action is only valid for an image that is being downloaded;
End download
It indicates the end of a download sequence, providing the CRC and information about version for the final verification of the
downloaded software image. This action is only valid for a software image that is being downloaded;
Activate image
It loads/executes a valid software image. When this action is applied to an inactive software image, the execution of the current
code image is suspended, the associated software image is loaded from the non-volatile memory and the execution of the
new code image is started. When this action is applied over a software image that is active, a reboot is executed;
Commit image
It selects a valid SW image to be loaded and executed by default when the Refs. 769501-769502 is restarted;
Composition of the Software Image
A software image is divided into sections of 31 bytes, with one section per OMCC message and each section protected by the
CRC of the OMCC. A group of sections makes up a window, and a group of windows constituting the image.
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