# \#call-sdk

**URL:** https://community.sendbird.com/tag/call-sdk/44.md

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## [Enable audio doesn't work before enable video](https://community.sendbird.com/t/enable-audio-doesnt-work-before-enable-video/9003)

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**Author:** [@Hassaan\_Ahmad](https://community.sendbird.com/u/Hassaan_Ahmad)\
**Replies:** 0\
**Last updated:** [February 2, 2024, 11:50am UTC](https://community.sendbird.com/t/enable-audio-doesnt-work-before-enable-video/9003 "2024-02-02T11:50:07Z")

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\[Problem/Question\] // Detailed description of issue. If I enter in a video call room with audio and video off, I am unable to start audio before I start video once. After enabling the video, even if i disable the video…

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## [Access token is invalid for voice & video calls during sign in](https://community.sendbird.com/t/access-token-is-invalid-for-voice-video-calls-during-sign-in/2726)

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**Author:** [@Ronit\_Patel](https://community.sendbird.com/u/Ronit_Patel)\
**Replies:** 5\
**Last updated:** [July 24, 2021, 1:07pm UTC](https://community.sendbird.com/t/access-token-is-invalid-for-voice-video-calls-during-sign-in/2726 "2021-07-24T13:07:33Z")

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400302 (InvalidAccessToken) this error generates during the sign in with ID and and app ID where the signup does not generate the access token or how to generate access token?

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## [Media, Ringtone, Alarm Volumes reduced on phone after call end](https://community.sendbird.com/t/media-ringtone-alarm-volumes-reduced-on-phone-after-call-end/567)

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**Author:** [@AK\_Infopark\_Projects](https://community.sendbird.com/u/AK_Infopark_Projects)\
**Replies:** 5\
**Last updated:** [July 9, 2020, 5:28am UTC](https://community.sendbird.com/t/media-ringtone-alarm-volumes-reduced-on-phone-after-call-end/567 "2020-07-09T05:28:33Z")

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I noticed a problem where the phone’s other volumes are reduced. After a call is ended when I press the device volume key it still adjust the call volume instead of ringtone or media volume.

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## [Navigate from Voice/Video call to another activity](https://community.sendbird.com/t/navigate-from-voice-video-call-to-another-activity/561)

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**Author:** [@Nemi](https://community.sendbird.com/u/Nemi)\
**Replies:** 10\
**Last updated:** [July 8, 2020, 10:47pm UTC](https://community.sendbird.com/t/navigate-from-voice-video-call-to-another-activity/561 "2020-07-08T22:47:45Z")

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I have implemented sendbird calling sdk in my application using the code examples given in your sample app. I have 2 queries regarding the same: How to add ringtone when the receiver side gets the incoming call screen…