# Cutover morning is a checklist, not a mood · Ecosystem



## Sources and go deeper

- [Planning your implementation](https://documentation.five9.com/bundle/basic-admin/page/basic-admin/intro/planning-your-implementation.htm). vendor. last checked 2026-10.
- [Inbound campaigns](https://documentation.five9.com/bundle/campaign-admin/page/campaign-admin/creating-campaigns/types-of-campaigns/inbound-campaigns.htm). vendor. last checked 2026-10.
- [E911 data sheet](https://www.five9.com/sites/default/files/2022-11/Data-sheet-Five9-emergency-services%20%28E911%29.PDF). vendor. last checked 2026-10.
- [Data retention](https://www.five9.com/legal/dataretention). vendor. last checked 2026-10.
- [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.
- [ITU-T E.164, international public telecommunication numbering](https://www.itu.int/rec/T-REC-E.164). standard. last checked 2026-10.
- [Enhanced 9-1-1](https://en.wikipedia.org/wiki/Enhanced_9-1-1). wikipedia. last checked 2026-10.
- confirm. This checklist is a teaching bridge for cutover discipline. It is not an official Five9 UCCE runbook. last checked 2026-10.