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Every carrier connects the same way: create a SIP trunk in Bolna, give your carrier Bolna’s values, then add your carrier’s IPs, gateways and numbers. Connect your carrier walks through that flow for any carrier. The guides below add what is specific to each one: where to find the values in the carrier’s console and what to ask its team to set. A preset fills in the carrier’s gateway, port and transport where they are the same for every account, and shows a checklist of what to set in that carrier’s console. Custom leaves every field for you to enter. For Indian numbers, also see Using SIP trunks in India for number format and DLT registration. Once the trunk is connected, receive inbound calls or make outbound calls on it.