> On 5 Jun 2015, at 04:50, Szu-Yu Chen <[email protected]> wrote:
> 
> 
> > 1. what does the “alerting” call state relate to/mean?
> >
> > When a user makes an outgoing call, the call will be in 'dialing' state at 
> > the very beginning.
> > Then, the network will try to find the remote party. If the network 
> > successfully reach it, the user who makes the call will hear the 'alerting' 
> > tone from the phone.
> > That's 'alerting' state and it means the call is successful but the remote 
> > side has not yet responded by answering or rejecting.
> 
> Ok, I’ve filled in a description on 
> https://developer.mozilla.org/en-US/docs/Web/API/TelephonyCall/state
> 
> How does this differ from ‘connected’ - does ‘connected' occur after the 
> receiving phone has answered the call?
> 
> Yes.
> 
> I noticed that some of the states described in the document are actually 
> removed.
> In the latest code on master, we only have following states for TelephonyCall
> 
> - dialing
> - alerting
> - connected
> - held
> - disconnected
> - incoming
> 
> The things we removed are:
> - busy: it's not a state and we now include it in the disconnectedReason
> - connecting, disconnecting, holding, resuming: transient states are not used

ok cool. I’ve handled this by moving the removed states into a “Obsolete call 
state values” section, which states why there were removed.
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