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Telnyx

Telnyx is the carrier-grade voice option in Insighto. If you're running a contact center, taking thousands of calls a day, or just want first-party carrier control over your traffic, Telnyx is the pick. Setup is one paste — Insighto creates the TeXML Application, links the Outbound Voice Profile, and sets the webhook for you.

Telnyx lives under Settings → Tools → Telnyx, same as Plivo. The credentials drive both inbound and outbound voice.

When to pick Telnyx​

  • High call volumes — Telnyx scales cleanly past Twilio for sustained voice traffic.
  • Carrier-grade quality matters (clear audio, low jitter, good for sales-floor use).
  • You want a single primary carrier without the Twilio markup on international.

How it works​

Add your credentials​

  1. In Telnyx Portal, generate an API Key under Account → API Keys.
  2. In Insighto, open Settings → Tools → Telnyx.
  3. Paste the key and click Save.

Insighto creates:

  • A TeXML Application that handles inbound webhook routing for your numbers.
  • An Outbound Voice Profile linked to the application so outbound calls also work.

How calls actually flow​

When a call hits a Telnyx number attached to a phone widget, Telnyx fetches TeXML from Insighto. The TeXML opens a bidirectional RTP stream:

<Response>
  <Connect>
    <Stream bidirectionalMode="rtp" url="..."/>
  </Connect>
</Response>

Audio flows in both directions. You don't write this — Insighto generates it per call.

Where to next​

  • Phone widget — build the inbound voice line on Telnyx.
  • Twilio — if you need SMS too.
  • SIP — if you already have your own enterprise trunk.