I linked to the post the Router configuration for one of the peer, is it almost exactly the same config for all other peers, and this was working fine on older router, why is the destination-pattern not working now that it is on the ISR 4331?

Anyone has any idea? 

It's a school network for training students, each dial-peers are interconnected via a switch, each dial-peer have their own router, switch & VoIP phone. Right-now I am trying to reestablish phone calls functionality between each peers. the calls were...

Anyone? 

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