Talk:WebAPI/WebTelephony

Proposal for an improved and simplied Telephony API (José M. Cantera, Telefónica I+D)

Sensor API

navigator.telephony would return an object with the following interface

 interface Telephony : EventTarget {
   TelephonySession newSession(DOMString number); // Multiple number call??
   readonly attribute TelephonySession liveSession;
   attribute Function onincoming;
 }
 interface TelephonySession : EventTarget {
   readonly attribute DOMString originNumber;
   readonly attribute DOMString number;
   // Do the call
   void call();
  attribute boolean muted; 
  attribute boolean speakerOn;
  void startTone(DOMString tone);
  void stopTone();
  void sendTones(DOMString tones,
                 [optional] unsigned long toneDuration,
                 [optional] unsigned long intervalDuration);
   readonly attribute DOMString readyState; // "calling", "incomming", "connected", "closed", "busy"
   // Can we get info on when a call goes from "trying to place call" to "calling"?
   attribute Function onconnect;
   attribute Function ondisconnect;
   attribute Function onbusy;
   attribute Function onreadystatechange;
   void answer(); 
   void hangUp();
  }
 interface IncomingCallEvent : Event {
   readonly attribute TelephonySession session;
 }

philikon's thoughts

• IMHO navigator.telephony.dial("numbergoeshere"); is nicer than new TelephonyCall("numbergoeshere");
• We have a bunch of telephony-related functionality that's not reflected yet:
  • controlling and reading radio power
  • reading radio metadata (operator, signal strength, etc.)
  • ...
• I would also suggest another readyState, "dialing" that comes before "calling" for outgoing calls.
• Nits: we should probably define the possible values for readyState on the interface (nit: for XHR they're ints, not strings... I like being consistent, but I also prefers strings... hmmm...). Also, event listener objects should probably be declared as EventListener.

My proposal on this (as a delta to the main proposal):

 interface Telephony {
   void power(bool on);
   Some thoughts on this:
   TelephonyCall dial(String number);
   
   EventListener onpowerchange
   EventListener onsignalstrengthchange
   EventListener onoperatorchange
 }