Video Invitation Issues with Mitel MiVoice 3300 System and Grandstream GXV3XXX Android IP Video Phones

This article addresses the video call establishment issue encountered with Grandstream Android IP Video Phones GXV3XXX when used with the Mitel MiVoice 3300 system. Users may receive a “Video Invitation Failed” error during calls. This issue can be resolved by adjusting the SIP Options and Signaling Header Manipulation settings under the Mitel system’s SIP Device Capabilities.

Please refer to the settings below: