# Advanced phone connections

Advanced phone connections in Nuteq are for businesses that already run their own phone system and want to connect it directly to an agent.

*Channels · Last updated 2026-09-08*

In Nuteq, advanced phone connections are for businesses that already run their own phone system, a PBX or a provider like RingCentral, Nextiva, or Zoom, and want to connect it directly to an agent instead of using a Nuteq-provided number.

## Who this is for

Most businesses don't need this. If you just want a phone number that reaches your agent, getting a new Nuteq number or bringing an existing one over is simpler and works right away. See [Get or bring a phone number](/docs/connections/phone/get-or-bring-a-phone-number). Advanced phone connections exist for the smaller group of businesses whose calls already flow through their own phone infrastructure, and who want that infrastructure to hand calls to a Nuteq agent directly.

## What's involved

Connecting an existing phone system means telling Nuteq how to reach your provider using details like a server address, a username, and a password, terms your provider's support team can give you if you don't have them already. Because every provider's setup is a little different, this is not a setup you should do without checking that it works. We recommend reaching out to [support](/docs/help/contact-support) before or during setup, so we can confirm calls are actually reaching your agent before you rely on it for real customers.

## Related terms

You may see this referred to as a SIP trunk, the technical name for a direct connection between two phone systems, or as bringing your own carrier, meaning the carrier or provider you already pay for. Both point at the same kind of setup described here.