Ionic ios app not sending or receiving video

Dear All,
We have deployed the latest openvidu server 2.15.0 in the AWS EC2 instance. And i am using the ionic app as front end app. I have deployed the ionic app in both ios and android devices.
When tested on the mobile data or with public wifi the ios app works great, but when i test it on my office wifi it is not sending or receiving video and it is throwing iceconnectionstate failed.
When it is tested on the iphone safari browser it works fine.

Please suggest me where it might gone worng and how to rectify it.

Thanks
Raj