---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/45305#article
headline: "45305:  No answer from Participant"
url: https://www.twilio.com/docs/api/errors/45305
inLanguage: en
dateModified: 2026-06-09T11:00:42.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 45305:  No answer from Participant

Log Type: APPLICATION

Log Level: WARNING

## Description

This warning appears when Flex tries to connect another participant in a voice interaction and does not receive a media response from that participant. You can see this during actions such as a consult call or warm transfer when the target participant does not answer or is not ready to take the call.

### Possible causes

* The participant was inactive and did not answer the call request.
* The participant was marked as available in Flex but was actually absent, so Flex routed the call and it went unanswered. ([help.twilio.com](https://help.twilio.com/articles/48864939563547))
* The participant could not complete the call because their browser did not have access to a working microphone or audio device. Flex rejects incoming and outgoing calls until the device issue is fixed.

### Possible solutions

* Retry the operation after confirming that the target participant is active and able to answer the call.
* If this happened during a warm transfer, cancel the consult call and start it again after confirming the receiving agent or queue is ready.
* Make sure agents who are away from their desks are set to `Offline` or another non-available activity so Flex does not route calls to them. ([help.twilio.com](https://help.twilio.com/articles/48864939563547))
* Verify microphone permissions, headset connection, and the selected audio device in Flex before retrying the call.

#### Additional resources

* [Warm transfer](/docs/flex/end-user-guide/warm-transfer)
* [Initial Audio Device Check](/docs/flex/end-user-guide/initial-audio-device-check)
* [Understanding Missed Calls Logged for Absent Agents in Twilio Flex](https://help.twilio.com/articles/48864939563547)