Set up your own SIP trunk

Connect your carrier

• Give the connection a name and choose your carrier's country. The country is used for numbers your carrier writes without the country code.
• Choose what the trunk carries: calls out, incoming calls, or both.
• For calls out, enter the carrier's SIP server, port and transport, and how Skysay signs in. A password is stored encrypted and never shown again.
• For incoming calls, enter your carrier's IP addresses, one per line: a single address, or a range such as a.b.c.d/29. Only calls from these addresses reach the connection.
• Number formats and audio (advanced) sets the number format for calls out, the caller ID format, the formats your carrier sends on incoming calls, the audio codecs (PCMA and PCMU) and an optional channel limit. Not sure? Keep the defaults, or ask your carrier which formats it uses.

Select Save and check connection.

Check the connection

Each check stands on its own; a passed check doesn't promise that a call works.

• Settings shows whether Skysay saved and set up the connection.
• Skysay is open to your carrier opens automatically for your carrier's addresses once you add a number for incoming calls. Until one of the connection's numbers is confirmed, it stays open for 24 hours after you last save the connection, add a number or check again.
• Calls out shows where Skysay sends your calls.
• Skysay can reach your carrier: select Check reachability. Within a few minutes the row shows the status your carrier's SIP server answered, in its own words, and says so if your carrier seems to want Skysay to register. What each answer means is in Reachability.

Add your numbers

Add each number you hold at your carrier, choose the Skysay-hosted AI agent that answers its incoming calls, and choose whether it calls out. Agents hosted outside Skysay (external agents) can't be used on your own trunk's numbers yet.

When you add a number, Skysay calls it once through the phone network to confirm it's yours. Nobody needs to answer: the call comes back to Skysay through your carrier, and the check usually takes under a minute. The Ownership column then shows one of:

• Confirmed: the number can call out. Calls out always show that number as caller ID.
• Checking…: the check call is on its way. The page updates by itself.
• Not confirmed: the check didn't succeed. The row says why; fix it at your carrier, then select Check again.
• Needs support: the number takes no incoming calls on this connection, so Skysay can't call it to confirm it. Contact support to confirm it.

Incoming calls work as soon as the number is added. Calls out with a number start once it's confirmed.

Test calls

Optional, but this is how a number gets its Verified badge. Test calls are ordinary calls, billed like any other.

• Call out through your carrier: choose the number to call from, the Skysay-hosted AI agent on the call, and a phone of your own, then select Place test call. The page shows Calling…, then Answered or Not answered with the status your carrier returned. After a call that wasn't answered, select Try with the next number format; after one that was, select Save this number format to use it for every call.
• Call in to your number: choose the number, select I'm calling now, and call it from any phone within 3 minutes. The page shows the call once it arrives, with only the last four digits of the caller's number.

Each number then reads Verified or Ready, not tested. The rules, limits and refusals for test calls are in Readiness checks.

Done

The summary lists each number, the AI agent that answers it, whether it calls out, and whether it's Verified. Your numbers also appear on the Numbers page with a Your SIP trunk badge. To change the connection later, open the number and select Manage SIP trunk.