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Telnyx

Answer calls to your Telnyx numbers with your receptionist over a SIP trunk.

Telnyx sends calls to Reception.ai over a SIP trunk. Your numbers stay on Telnyx, and Telnyx bills you for the minutes.

Before you start

  • A Telnyx account with at least one phone number.
  • Telnyx’s SIP signaling IP addresses, listed in Telnyx’s documentation. Reception.ai only accepts calls from addresses you allow.

Setup

1

Add the SIP trunk in Reception.ai

Go to Integrations, select Add integration, and choose SIP Trunk. Under Inbound allowed addresses, add Telnyx’s signaling IP addresses. Leave the inbound username and password empty unless your Telnyx connection authenticates with credentials.

To let your receptionist transfer calls back out through Telnyx, set Outbound SIP address to sip.telnyx.com and enter the outbound credentials from your Telnyx connection.

2

Add the number

Go to Receptionists, select the Phone tile, enter your Telnyx number, and select Add SIP Trunk number. Reception.ai shows the SIP servers to send calls to.

3

Create a connection in Telnyx

In the Telnyx Mission Control Portal, go to Voice → SIP Trunking and create a connection with FQDN authentication. Add one of the Reception.ai SIP servers as the FQDN, with transport TCP or TLS.

4

Send numbers in E.164 format

In the connection’s inbound settings, set the destination number format to +E.164. Reception.ai rejects calls whose request URI doesn’t start with the number in E.164 format, for example +14155550123.

5

Assign your number

In Numbers → My Numbers, set the number’s connection to the one you just created.

6

Test it

Call the number from another phone and check that your receptionist answers.

Troubleshooting

ProblemWhat to check
Calls fail before ringingCheck that the FQDN matches a Reception.ai SIP server exactly and that the transport is TCP or TLS, not UDP.
Calls are rejectedAdd every Telnyx signaling IP to Inbound allowed addresses and send the number as +E.164.
The receptionist doesn’t answerMake sure the number is added on the receptionist’s Phone tile, not only on the SIP trunk.
One-way or no audioCheck that Media encryption in the trunk’s advanced settings matches the Telnyx connection.