Knight Walker moko at
Fri Apr 6 21:26:40 CEST 2007

On Fri, Apr 06, 2007 at 10:31:47AM -0700, Tim Newsom wrote:
> That seems weird... Even in email you can turn off read receipts... It 
> seems like an invasion of sort (though a minor one) to not allow 
> disabling of delivery reports for the receiving party.

There are two kinds of delivery reports, because I've specifically got
them turned off in my phone, but my sister still gets them when she sends
to me, so I think they're network-generated, and that means they will
only work as far as the network can tell, so if transferring to a
different network (She's on a different one than I am), she'll only know
when they're sent to my network, not to me.  And I know my phone doesn't
send them back, because she has received some when I was out of coverage.

> Does the sms message system work while the phone is in call mode? Does 
> that require multiplex code also like the gprs while on a call does?
> If it doesn't work while calling, you can always find out when someone 
> is done talking on the phone / is available to talk (assuming they are 
> at the phone) by sending an sms with delivery report first... Right?

It may depend on the phone, but on my current phone yes, SMS can be sent
and received while I'm on a call. I've had that happen MANY times, and
my phone isn't one of the ones that can GSM and GPRS at the same time.

> Seems like there should be some kind of control message that could be 
> sent over the serial port via 'AT' commands which would enable and 
> disable this.

Assuming that the receipts are sent from the phone, yes, there should be.
However, if (as I suspect) they are generated by the network, there's
nothing you can do about them, but they're not terribly accurate to begin


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