# Studio has regions · Ecosystem



## Sources and go deeper

- [Technical requirements PDF](https://documentation-be.five9.com/bundle/five9-technical-requirements/raw/resource/enus/five9-technical-requirements.pdf). vendor. last checked 2026-10. Fetched for this lab in October 2026. Re-read before you buy hardware or open a firewall.
- [IANA service names and port numbers](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml). ports. last checked 2026-10.
- [RFC 3261, SIP: Session Initiation Protocol](https://www.rfc-editor.org/rfc/rfc3261). rfc. last checked 2026-10.
- [RFC 1035, domain names](https://www.rfc-editor.org/rfc/rfc1035). rfc. last checked 2026-10.
- [RFC 2782, DNS SRV](https://www.rfc-editor.org/rfc/rfc2782). rfc. last checked 2026-10.
- [RFC 9293, Transmission Control Protocol](https://www.rfc-editor.org/rfc/rfc9293). rfc. last checked 2026-10.
- [RFC 768, User Datagram Protocol](https://www.rfc-editor.org/rfc/rfc768). rfc. last checked 2026-10.
- confirm. Studio signaling ports in the PDF are easy to misread as universal VCC trunk ports. Confirm which SBC your domain uses. last checked 2026-10.