Re: Telephony API Review

Hi. Mandyam.
Thanks a lot for valuable feedback.

Editors for Telephoy spec, what do you think?

Kr Wonsuk.


2014-01-31 Mandyam, Giridhar <mandyam@quicinc.com>:

> As I agreed to do at the last F2F (during the November 2013 TPAC), I
> conducted a review of the Telephony API with the internal Firefox OS team
> within Qualcomm.  Hope this is of use to the group.
>
> -Giri Mandyam, Qualcomm Innovation Center
> -------------------------------------------------------
>
> The version of the API we reviewed is at
> http://www.w3.org/2012/sysapps/telephony/.
>
> General comments:
>
> 1.      Concurrency (data/voice) is not a given - there are several
> situations where an incoming voice call will interrupt a data session.
>  There should be a system event for an incoming voice call that any
> application could leverage.
>
> 2.      The current API does not handle CDMA (IS-41) conference calling
> adequately.  {This is recognized by the spec editors and was discussed
> during the Toronto Working Group F2F last year).
>
> Specific comments:
>
> 1.      Hide caller ID (
> http://www.w3.org/2012/sysapps/telephony/#widl-DialOptions-hideCallerId)
> would be better handled via an MMI code rather than an API call.
>
> 2.      Change default service (
> http://www.w3.org/2012/sysapps/telephony/#widl-TelephonyManager-changeDefaultService-Promise-DOMString-serviceId).
>  Why is this in the TAPI?  It would be better handled in a settings
> API/settings app.  This is not something that is typically controlled
> through the RIL.
>
> 3.      Service change events (
> http://www.w3.org/2012/sysapps/telephony/#widl-TelephonyManager-onserviceadded).
>  Why is this in the TAPI?  This is also not something that is typically
> propagated through the RIL.
>
> 4.      Call states (http://www.w3.org/2012/sysapps/telephony/#call-states):
>  dialing, active, incoming, waiting, held and disconnected can be
> supported.  The other states cannot.
>
> 5.      Call redirect (
> http://www.w3.org/2012/sysapps/telephony/#the-redirect-method) and
> transfer (http://www.w3.org/2012/sysapps/telephony/#the-transfer-method)
> would be better handled via MMI codes.
>
> 6.      Current TelephonyCall (
> http://www.w3.org/2012/sysapps/telephony/#telephonycall-interface) does
> not have hold and disconnect (end) methods.  Is this intentional?
>
> 7.      createConference (
> http://www.w3.org/2012/sysapps/telephony/#widl-TelephonyCall-createConference-ConferenceCall)
> method is fine for CDMA, but the returned ConferenceCall object will not
> have information on the dialed parties (at least this information won't be
> coming from the RIL).  The browser implementation would have to retain this
> info.  The current ConferenceCall object enumerates the dialed parties
> through a TelephonyCall array.
>
> 8.      conferenceID (
> http://www.w3.org/2012/sysapps/telephony/#widl-ConferenceCall-conferenceId)
> is not obtainable through the RIL.  Is this going to be assigned by the
> User Agent?
>
> 9.      Conference call states (
> http://www.w3.org/2012/sysapps/telephony/#widl-ConferenceCall-onparticipantadded)
> - held, active, disconnected can be supported.  The other states cannot.
>
>


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