Presenting a webinar: audio & dialling in

For the best audience experience and HD audio quality, we strongly recommend using computer audio (internal or external microphone) when presenting your live talk.

It is strongly recommended that all presenters test their system (audio, camera and/or slides) well in advance of their webinar.

Make sure to check out How to present a webinar and What do I need to present a webinar for more presenting tips and tricks!


However, there are dial-in options available as well, whenever needed. 

Navigate to Presenting options by clicking the cog.png cog icon on the presenter screen. Under the Audio section, switch your device type to Telephone to see a list of available telephone numbers and your unique Participant ID*.


* Each presenter has their own unique Participant ID that ties their audio feed to their webcam and presenter profile. Do not share this unique ID with any other presenter, observer or audience member!

Dial-in option is available for the following countries: 

USA_flag.png  United States
flag_-_uk.png  United Kingdom
flag_-_au.png  Australia
flag_-_ca.png  Canada

Please note that availability of phone numbers in other countries is dependent on the local governments’ regulations and compliance laws. We closely monitor regulatory changes and aim to add more dial-in options whenever legally and operationally possible.



Q: What country phone numbers are available for dial-in? 
United States, United Kingdom, Australia, Canada. 

Q: When can I dial in to my talk?
You can dial in to your talk at any time, just like with computer audio.  

Q: Can I switch between audio types while live? 
Yes. If you’re connected via computer audio, open Presenting options, choose Telephone audio type, and follow the dial-in instructions. Once you successfully enter your Participant ID, your audio input will be switched to your telephone automatically.

If you’re connected via telephone audio, you will first need to end the call on your physical device, and then switch to Computer audio type in Presenting options and confirm. 

Q: Can I use my phone alongside my webcam?
Yes, by entering your unique Participant ID, you are connecting your audio to your webcam feed. 

Q: Will I hear video play-ins over my phone?
You will not be able to hear video play-in audio on your phone call. Make sure your computer speakers are on to hear it on the presenter screen.

Q: Can other presenters see that I am using my phone?
Yes, your audio input icon will change to telephone if you’re using the dial-in option. 

Q: Can I mute myself on the presenter screen like I would my computer mic?
Yes, your phone audio can be muted via the presenter screen. Once muted, your audience and presenters using computer mics will not be able to hear you. However, when there are multiple presenters using telephone dial-in, we recommend muting your physical device as well to ensure dialed-in presenters cannot also hear you on their phones. 

Q: Is there a limit to dialed-in presenters?
Talks platform supports up to 9 presenters in total, whether connected via computer and telephone audio.

Q: Is there a dial-in option for the attendees? 
There is no audio only option for the attendees.

Q: What are best practices for optimal audio quality over dial-in? 
While we advise using computer audio whenever possible to achieve HD audio quality, you can follow these best practices to get the most out of your telephone connection:

- Use a hardline/landline phone to dial in as this is the least likely to experience any drops in connection.
- Use a microphone headset via landline to optimize the clarity and consistency of the audio feed. 
- If possible, avoid using cell phones as their connections are not as reliable as landlines and are subject to the available network coverage.
- Avoid using speakerphone on your landline handset to broadcast your audio. We recommend this strongly, as any movement by the presenter will vary the volume and clarity of the audio, making it more difficult for the audience to hear. 

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