> ## Documentation Index
> Fetch the complete documentation index at: https://docs.trychert.com/llms.txt
> Use this file to discover all available pages before exploring further.

# FAQ

> Common product and integration questions.

<Accordion title="Can our own agent use a Chert-operated FaceTime line?">
  Yes. Use [BYOR](/facetime/bring-your-own-room). Chert operates the line and bridge; your agent joins your own LiveKit room using a token from your backend. Chert joins with a separate token you provide. A Chert-operated line does not require a Chert-managed Assistant.
</Accordion>

<Accordion title="Does our agent receive the caller's camera?">
  Yes. On video calls, the bridge publishes `facetime-remote-video` alongside `facetime-remote-audio`. Subscribe to both and connect the video frames to your agent's vision pipeline. Audio-only calls do not include caller video.
</Accordion>

<Accordion title="How many teams can call at once?">
  One active call per provisioned line. N independently provisioned, ready lines support up to N simultaneous calls, subject to your agent and LiveKit capacity. Confirm your event's actual line allocation with Chert; teams can share fewer lines through sequential slots. See [Limits and readiness](/facetime/limits).
</Accordion>

<Accordion title="Are LiveKit Cloud keys all we need for a demo?">
  You also need a provisioned FaceTime line, an agent runtime, room and token creation, and an HTTPS decision webhook. Follow the [preparation checklist](/facetime/quickstart#what-to-have-ready), then rehearse a live video call before the demo.
</Accordion>

<a id="caller-installation" />

<Accordion title="Does the caller need to install anything?">
  No. Any iPhone, iPad, or Mac with FaceTime works. That is the point.
</Accordion>

<a id="multiple-lines" />

<Accordion title="Can one assistant serve multiple lines?">
  Yes. Each line resolves the assistant's active published version independently.
</Accordion>

<a id="switch-assistant" />

<Accordion title="Can I switch a line's assistant mid-day?">
  Yes. Assign another assistant or publish a new version; it takes effect on the next call. Active calls never change mid-call.
</Accordion>

<a id="endpoint-down" />

<Accordion title="What if my BYOR call.incoming endpoint is down?">
  The call is declined at the response deadline. The caller experiences a normal unanswered or busy call.
</Accordion>

<a id="audio-only" />

<Accordion title="Are audio-only agents supported?">
  Yes. FaceTime Audio uses the same assistant; the avatar is simply not rendered.
</Accordion>

<a id="custom-voice-llm" />

<Accordion title="Can I run my own voice or LLM but use Chert's avatar?">
  Not currently. BYOR gives you full control by bringing the entire agent; Managed Assistants uses Chert's managed stack end-to-end.
</Accordion>

<a id="design-partner-access" />

<Accordion title="How do I get design-partner access?">
  Contact the Chert team to provision a FaceTime line and enable your integration.
</Accordion>