skyscraper8/Documentation/sophia-net-signalling.md

Sophia.net Signalling

When either a Private Data Descriptor or a Registration Descriptor with the value "0x534f5048" is found in any table the following Signalling applies:

Stream Types in PMT:

|Stream Type|Interpretation | |0x80 |TBS 6903-X GSE Packets | |0x81 |AC-3 Audio | |0x82 |PID only used for PCR |

Descriptors:

Sophia.net employs the following descriptors:

|Descriptor |Interpretation | |0x80 |Encapsulated Transport Stream over MPE |

0x80: Encapsulated Transport Stream over MPE

When the following conditions all apply: - This Descriptor is encountered in the inner loop of a PMT - The Stream Type is 0x0D (data broadcast) - A data_broadcast_id_descriptor is present - data_broadcast_id is 5 THEN: This PID will contain an Encapsulated Transport Stream carried within MPE Packets.

Data within this descriptor should be a human readable description of what the Encapsulated Transport Stream is, but can be left empty.

Other Rules:

Aside from that, the following rules shall apply:

• The IRD MUST process any TDT/TOT tables, regardless of whether the Transport Stream ID and Network ID is known or not.