# SIP trunk connection

A SIP trunk connection links your existing phone system to Nuteq directly, an advanced setup best done together with our support team.

*Channels · Last updated 2026-09-08*

In Nuteq, a SIP trunk connection is a direct link between your existing phone system and an agent, set up with the server address, username, and password your provider gives you, instead of using a Nuteq-provided number.

## Is this for you?

A SIP trunk is the technical name for the setup described in [Advanced phone connections](/docs/connections/advanced-phone-connections). It's meant for businesses that already run a PBX or a provider like RingCentral, Nextiva, or Zoom, and want that system to hand calls to an agent directly. If you don't already have one of these systems, getting a Nuteq number is the simpler path. See [Get or bring a phone number](/docs/connections/phone/get-or-bring-a-phone-number).

## Setting one up

You can enter your provider's connection details yourself from Settings, but because every provider is configured a little differently, we strongly recommend setting this up together with [support](/docs/help/contact-support) rather than on your own. We'll confirm calls are actually reaching your agent before you point real customers at the number.