it is an absolute miracle that mobile phones work
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VoLTE billing architecture, explained!
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I love how the actual billing bits seem to be missing.

8:50 PM · Aug 30, 2020

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Replying to @ch2500 @The6P4C
to be fair the corresponding article does go through that i just couldn’t resist the screen grab lteconference.wordpress.com/…
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He's right, the billing is missing because it's most of time an application running over Oracle. The SCP is only protocol gateway between all the mess, to talk and configure other network components. On that picture, it's also missing the BSS part of billing, customer support
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