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BRI Basics

BRI Basics. Subsection of ISDN 2 B channels, 1 D channel Line coding 2B1Q -> North America 4B3T -> rest of the world 48 bit frames 16 bits per B channel 4 bits per D channel 12 bits for sync Max Data Rate is 144 kbit/s 2 X B channel = 64 kbit/s 1 X D channel = 16 kbit/s. BRI Basics.

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BRI Basics

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  1. BRI Basics • Subsection of ISDN • 2 B channels, 1 D channel • Line coding • 2B1Q -> North America • 4B3T -> rest of the world • 48 bit frames • 16 bits per B channel • 4 bits per D channel • 12 bits for sync • Max Data Rate is 144 kbit/s • 2 X B channel = 64 kbit/s • 1 X D channel = 16 kbit/s

  2. BRI Basics • Point to Point and Point to Multi-Point • P2P • 2 sides, NT (network) and TE (terminal) • Telco is always NT

  3. BRI Basics • P2mP • NT talking to multiple TE • MSNs

  4. Sangoma A500 • A500 Demo • NetBricks BRI stack • Sangoma Media Gateway • Chan_woomera

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