Iñaki Baz Castillo wrote:
> El Jueves, 11 de Junio de 2009, Paul Kyzivat escribió:
>> Specifically, from a caller perspective, how is a call handled via "call
>> waiting" at the callee any different from the call ringing on a phone
>> with two lines where the other line is in use? Why should the caller get
>> a special signal in one case and not in the other case?
>
> Paul, i don't understand the "two" cases you mention, I just see one (as you
> say):
>
> "the call ringing on a phone with two (or more) lines where the other
> line is in use"
>
> Which is the second mean?
In one case I have a single phone with one phone number. Typically if a
2nd call comes in while phone is in use it is signaled to the callee in
the media stream rather than through "ring". To switch between calls you
typically use "flash". This is case where typically the caller might get
a "call waiting" signal. (Because this case is considered a "call
waiting" feature.)
A 2nd case is where I have a "desk phone" with multiple "line" buttons
on it. Those "lines" may be associated with distinct phone numbers. By
pushing the line buttons you can connect the microphone and speaker to
one or the other of the "lines". While a call is in place on one line, a
call may come in on the other "line". Typically the signaling in this
case would still be a ring, or maybe a flashing of the light on the line
button, or both. To switch and answer the 2nd call you might have to
first push HOLD and then press the button for the other line. In this
case, AFAIK, the caller is *not* likely to get a "call waiting" signal.
The above are "traditional" renderings of a couple of different
services. But fundamentally they are almost the same. In particular, the
increased effort and delay to answer the 2nd call is pretty much the
same in both cases. So if it makes sense to alert the caller to this in
one case, it ought to make sense to do so in the other case too.
OTOH, I am not convinced that it makes sense in either case. Being "on
the phone" at least means you are *near* the phone. So the time to
answer may actually be less, on average, than when you are not on the
phone. So what is the point in signaling anything special?
If anything, it would be better if the callee could cause a signal to be
returned to the caller that affirmatively indicated "I acknowledge your
call, but will need extra time before I can answer it".
Thanks,
Paul
>> AFAICT, from the caller perspective this is just a "this callee may take
>> an unusually long time to answer the call" indicator, and callees ought
>> to be able to make their own decision about when to specify it.
>
> Yes, I agree :)
>
>
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