Use ARS Target field
Since Brekeke PBX v3.2.4.3 and later, at ARS pattern-OUT rule > [target] field, set
@<registered_phone_ID>
Generally, <registered_phone_ID> are the SIP ID with which gateway has registered at Brekeke PBX bundled SIP Server.
With above setting, calls can be sent to gateway without setting up gateway IP in [Deploy Patterns] > [To] field in case the gateway IP may change from time to time.