EXFO EXpert IPTV Test Tools (FTB-1 / 2 Pro) - Manual (Page 69)

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• PAT lists all programs available in the transport stream with their program ID (PID).
• Each program has a PMT that lists the elementary streams for that program.
• Errors in PMT, PAT, PID/PSI(Packet Identifier/ Program Specific Information) Errors
will cause the set top box lose contact with the stream. These errors may originate at
any of the MPEG transport multiplexers when new streams are inserted.