I've never came across a SBC and I'm hoping to get some advice on understanding them and where to put them in the network.
We are currently using Asterisk as our PBX system and hoping to use a SIP trunk service by our MPLS provider. This SIP gateway will be within our MPLS VPN so it will contain a private IP address we can route to. We've been informed we must use a SBC to connect to the SIP gateway.
This is the first I've heard of a SBC. Can't Asterisk do the same functions as a SBC with registering and managing the calls? And where would you implement this sort of equipment in a collapsed core network that has two HA firewalls facing the outside of our network towards the PE router?
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