VoIP SIP Trunks: Difference between revisions
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It is also possible to register your PBX against the 'Base' Number, then calls for numbers in the 'Group' will be sent to that registration.
Please note that the base number CLI logic can be broken by NAT. We initially look for a registration for the number we have on a call (e.g. DDI), and if found, we use it. If not, and if base number is set, we check if the base number has a registration. If so, we use the DDI followed by the contact from the registration. When NAT is used we can't trust the contact for the registration.
==Asterisk==
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