An answer could not be created
An offer could not be created
No media connection could be established to the other party
The invite timed out whilst waiting for an answer
An error code when the local client failed to create an offer.
A call from the same user was found with a new session id
An error code when there is no local mic/camera to use. This may be because the hardware isn't plugged in, or the user has explicitly denied access.
The call was replaced by another call
Error code used when we fail to send the answer for some reason other than there being unknown devices
Error code used when we fail to send the invite for some reason other than there being unknown devices
The session description from this side could not be set
The session description from the other side could not be set
Signalling for the call could not be sent (other than the initial invite)
We transferred the call off to somewhere else
Error code used when a call event failed to send because unknown devices were present in the room
The remote party is busy
The user chose to end the call
A different device answered the call