Cisco 7821 Cant provision with vitalpbx

Here is my Configuration an im still not able to provision cisco 7821

any idea why cisco phone is still not able to register ?

Anyone here who can share his configuration or can tell what am i missing here? by Cisco phones are non 3PCC
phone model cp-7821-k9 = v08

Never mind, It’s working now . Inbound Outbound and rest of the features

Why? Please help others reading this.

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