Satellite Communications/VPID, APID, PPID

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Question
Hi Sirs,
i wish to know the mains differences and specific rule of the following abreviations mostly found in satellite modem. how are the values been choseen ?

THANKS

Answer
Hi Rodolphe, these are basically Technical abreviations for identification of the Channel: video and audio and IP.As an end user it is of least importance for using a modem, you nay consider them as programming yourt remote control and the TV for sequencing your preferred channels to be. These are program ids packed into compressed programs for decoding purposes and they are all in a technically Layered format as far as Networking is concerned.If you have the skill of landing into formatting mode for selection or altering then you may view one video with multiple audio channels, for example which any way does not serve purpose unless they are related translation channels!
Cheers/GTRao

Satellite Communications

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TIRUMALA RAO G

Expertise

Satellite Communications Applications, Link Calculations, Teleports, Earth Stations,VSAT, Tracking, Mobile Communications, Next Generation Networks.

Experience

40 Years. Indian Space Research Organisation, PANAMSAT, Satellite Based VSAT Networks, IP Networks.

Organizations
ISRO, PANAMSAT, Engineering Institution for Higher Education (GVP College of Engineering), Consultancy.

Education/Credentials
Graduate in Electronics and Communication Engineering with Distinction. Guiding scholars for their Doctoral thesis in related areas in Academics.

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