--- title: "[Video]E21 Emergency Intercom Installation" slug: "how-to-install-akuvox-e21-emergency-intercom-video" updated: 2026-02-25T08:59:58Z published: 2026-02-25T08:59:58Z canonical: "knowledge.akuvox.com/how-to-install-akuvox-e21-emergency-intercom-video" --- > ## Documentation Index > Fetch the complete documentation index at: https://knowledge.akuvox.com/llms.txt > Use this file to discover all available pages before exploring further. # [Video]E21 Emergency Intercom Installation [Embedded content](https://www.youtube.com/embed/6BOS0u4WE30) **Related Documentation** 📘 [Akuvox E21 V2 Series Quick Guide](https://knowledge.akuvox.com/docs/akuvox-e21-v2-series-quick-guide)