Re: Weird Happenings


Isaiah Beard wrote:
> RVer Don wrote:
> > Sometimes when my cell phone is called the caller will immediately get the
> > voice mail message. The phone will ring once but there will be no one there
> > when answered. I was told this might be because the phone was in a weak
> > signal area. So I tried calling it at home from my landline. The signal
> > there is four or five bars.
> >
> > Sometimes it will ring more than once and can be answered before going to
> > voice mail. Other times, with the cell phone in the same exact place, it
> > will immediately go to voice mail. It will ring but one time only and there
> > is no chance to answer the call before it goes to voice mail. Anybody got
> > any idea what's going on here?
>
> From what you describe, one of two things might be happening:
>
> 1. There's enough signal attenuation inside your house that although
> you're getting a good signal strength FROM the tower, the signal
> strength TO the tower isn't so great. Wireless phones must work both
> ways, and sometimes it's possible for your phone to "hear" the cell
> tower just fine, but the cell site can't receive your phone's much
> weaker signal quite as well. You might have to reposition the phone,
> say, nearer to a window.
>

Good point.
So could the first ring be the tower sending the info, but then when
the phone tries to reply it doesn't have the power to "answer " with
sufficient power to carry a voice call back to the tower, so it stops
and goes to VM? Reduced range or cell breathing, could definitely be
caused by high traffic at peak calling times.
I know there is two way communication established before the first
ring, but that may take less power than what is required to open up a
voice slot. The phone has to be "found" in the first place.
Anyway, that's how I think it works basically. Could you clarify the
call set up connection sequence any better?

Turning on the debug screen and checking the other reading, TX for
phone's output power, during good and missed calls might provide some
clues. See if the phone is putting out max TX power and not able to
connect back, once it rings.

Thanks, Dave

.

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