Connect tools & data

Connect a VoIP provider

Bring numbers you already own: guided Telnyx setup, direct Twilio/Telnyx credentials, or any SIP trunk via manual configuration.

Production traffic should run on numbers you own through your own VoIP provider. The dashboard's Connections → VoIP page (/dashboard/voip-connections) connects your provider account; once connected, you import numbers that support inbound and outbound calling.

Click New connection and pick one of three routes:

Telnyx — guided setup (recommended)#

Never used a VoIP provider before? The guided flow walks you through the whole thing:

1. Create the account

   Click Open Telnyx Signup, create your account, and check "I've created my account."

2. Get an API key

   Click Open API Keys Page, generate a key, and paste it into API Key (v2). Optionally name the connection.

3. Connect & Test

   Click Connect & Test — ThunderPhone verifies the credentials and provisions what it needs on the Telnyx side before saving.

Connect an existing account#

Already use a provider? Pick it and paste your credentials:

Manual SIP configuration#

Any SIP trunk works — including SignalWire, Vonage, or a PBX you run yourself. Enter the connection name, SIP domain / URI, optional username and password, port, and transport; Advanced Settings adds an allowed-source-IPs list (recommended). Two buttons do the heavy lifting:

• Generate AI Setup Guide — writes provider-specific instructions for the trunk-side configuration you need.
• Test & Save Connection — verifies the trunk end-to-end before the connection is saved.

After connecting#

Import numbers from Phone Numbers → Add number → Connect VoIP provider (or straight from the connection). Imported numbers are verified with a round-trip check, then support inbound and outbound — which unlocks outbound campaigns and programmatic outbound calls.

Next steps#