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scott schrieb:
> Or an engine generating 0.1 MW :-) Interesting point though, I don't
> know on mine whether it's the car or the phone that is actually doing
> the radio comms, I never thought that it might be the car... I wonder
> how I can tell?
If it uses the SIM Access Profile (SAP), you're the owner of a
four-wheeled, combustion engine powered (and therefore in every sense
mobile) full-fledged phone. The only thing it lacks is a slot into which
to stick the SIM card (but chances are the circuit board has solder pads
to connect one :-)).
In that case, usually your hand-held phone will not allow any
interaction (at least not mobile phone stuff) while connected to the
car. Also, neither rolling phone nor hand-held will provide any way of
transferring a call to the respective other.
If you can switch between hand-held and carkit speakers, it's not SAP
but classic Handsfree Profile (HFP), in which case your phone is still
doing the hard work and burning battery power.
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> In that case, usually your hand-held phone will not allow any interaction
> (at least not mobile phone stuff) while connected to the car.
OK, well I can definitely dial numbers using the phone handset itself, send
receive texts etc, but the any call details appear on the car display and
the sound comes through the car speakers automatically even if I dial from
the phone handset.
> If you can switch between hand-held and carkit speakers, it's not SAP but
> classic Handsfree Profile (HFP), in which case your phone is still doing
> the hard work and burning battery power.
Maybe there is a way to switch between the two, I haven't found it yet
though apart from turning off bluetooth on my phone.
Also what's cool is that if you shoot a video from the phone it mutes the
music in the car :-)
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scott schrieb:
>> If you can switch between hand-held and carkit speakers, it's not SAP
>> but classic Handsfree Profile (HFP), in which case your phone is still
>> doing the hard work and burning battery power.
>
> Maybe there is a way to switch between the two, I haven't found it yet
> though apart from turning off bluetooth on my phone.
That's unlikely; usually, carkits feature /either/ Handsfree Profile
/or/ Sim Access Profile. So far I haven't seen any carkit that did both.
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scott wrote:
> Oh ok, mine must work differently then, there is no way to manually add
> or remove contacts from the car, it just displays what is in the phone.
> Not sure at what point it grabs the data, I haven't played about with
> adding contacts while it's connected to the car.
There's a blue tooth protocol for dialing the phone et al, a blue tooth
protocol for transferring address books (not unlike what the old Palm did
over IR), and a blue tooth protocol for accessing the SIM.
It's possible your car grabs or grabbed the address book via the "transfer
address book entries" when you first associated the phone to the car. My
phone isn't sophisticated enough that I didn't have to do that manually.
Or... it could be using the SIM bit, if you have a SIM-based phone. (I
don't.) If there's no way to enter contacts, I wouldn't be surprised if
that's what's happening.
> My SIM card apparently can only hold 100 entries, and the entries are
> only just 1 name and 1 number.
Odd. That wasn't how I understood SIM cards to work in general.
> Or an engine generating 0.1 MW :-) Interesting point though, I don't
> know on mine whether it's the car or the phone that is actually doing
> the radio comms, I never thought that it might be the car... I wonder
> how I can tell?
That I couldn't guess. Maybe lock your phone, then try to call from the car?
(Oddly enough, that seems to crash my car phone interface until I
power-cycle the car. Either that, or it's an absurdly long timeout.)
--
Darren New, San Diego CA, USA (PST)
Understanding the structure of the universe
via religion is like understanding the
structure of computers via Tron.
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clipka wrote:
> scott schrieb:
>>> If you can switch between hand-held and carkit speakers, it's not SAP
>>> but classic Handsfree Profile (HFP), in which case your phone is
>>> still doing the hard work and burning battery power.
>>
>> Maybe there is a way to switch between the two, I haven't found it yet
>> though apart from turning off bluetooth on my phone.
>
> That's unlikely; usually, carkits feature /either/ Handsfree Profile
> /or/ Sim Access Profile. So far I haven't seen any carkit that did both.
He meant like what I have in my car. If I'm talking on the car's hands-free,
and I stop the car, I get a button on the car's interface that lets me
switch over to talking on the phone without dropping the call. I.e., it
turns from "headset" to "handset".
If the car is the actual phone, it's less likely that there's a way to
transfer the call to a whole different phone.
--
Darren New, San Diego CA, USA (PST)
Understanding the structure of the universe
via religion is like understanding the
structure of computers via Tron.
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Darren New schrieb:
>> My SIM card apparently can only hold 100 entries, and the entries are
>> only just 1 name and 1 number.
>
> Odd. That wasn't how I understood SIM cards to work in general.
That's just the way it is - that's how they were standardized, back in
the old days, when nobody ever thought about storing more information
than just a person's phone number.
Later, phone manufacturers found that the SIM card standard not only
sucked at flexibility to store other things than phone numbers, or
storage capacity, but also at retrieval speed.
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On Wed, 26 Aug 2009 23:40:55 +0200, clipka <ano### [at] anonymous org> wrote:
>Darren New schrieb:
>>> My SIM card apparently can only hold 100 entries, and the entries are
>>> only just 1 name and 1 number.
>>
>> Odd. That wasn't how I understood SIM cards to work in general.
>
>That's just the way it is - that's how they were standardized, back in
>the old days, when nobody ever thought about storing more information
>than just a person's phone number.
>
>Later, phone manufacturers found that the SIM card standard not only
>sucked at flexibility to store other things than phone numbers, or
>storage capacity, but also at retrieval speed.
Just over a year ago I got a new mobile (cell) phone. I had to get an upgraded
SIM as my original SIM was over 10 years old and several functions on the phone
would not work with it.
--
Regards
Stephen
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clipka wrote:
> That's just the way it is - that's how they were standardized, back in
> the old days, when nobody ever thought about storing more information
> than just a person's phone number.
The wonders of premature standardization. Not that it seems better than the
alternative, mind.
> but also at retrieval speed.
Sure. I was under the impression that when you put the SIM card in, the
phone would read and cache the values for you in faster flash ram. I thought
there was more in there than just a simple one-number address book, but I
can see how that might happen, yes, with nobody agreeing on what else to put
in there, and nobody wanting (or being allowed to) specify
manufacturer-specific fields.
--
Darren New, San Diego CA, USA (PST)
Understanding the structure of the universe
via religion is like understanding the
structure of computers via Tron.
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> It's possible your car grabs or grabbed the address book via the "transfer
> address book entries" when you first associated the phone to the car.
I think it grabs them each time the car/phone see each other (ie when I get
in the car and turn on the ignition). It definitely shows entries that I've
added since pairing, but when I tried to add a contact while the car was on
it didn't show up in the car.
> Or... it could be using the SIM bit, if you have a SIM-based phone. (I
> don't.)
Everyone here has a SIM based phone, even my first Motorola brick had a SIM
card. I have never seen a phone without a SIM card.
>> My SIM card apparently can only hold 100 entries, and the entries are
>> only just 1 name and 1 number.
>
> Odd. That wasn't how I understood SIM cards to work in general.
I can configure the address book on my phone to show or hide contact on the
phone and contacts on the SIM card. Both sets show up in the car regardless
of the settings on the phone (I know this because they put a few
pre-programmed numbers on the SIM card when I got it which never show up in
my address book on the phone). The contacts on the SIM card are useless
because you can't add any extra info to them, I don't know of any modern
phones that use the SIM for storing contacts by default.
> That I couldn't guess. Maybe lock your phone, then try to call from the
> car?
If you mean lock the keypad, then my phone almost always has the keypad
locked (in my pocket) when I'm in the car. There is no problem making or
receiving calls. I just checked on my phone and the pairing for the car is
called an "Audio Device", so I guess it just uses the protocols for
initiating and picking up calls, transferring the audio, and for
transferring the address book. Works ok for me, I don't use the phone for
long enough to usually have to worry about the battery running out (I think
it has about 6 hours talk time and will last for about a week if I don't use
it much).
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scott wrote:
> Everyone here has a SIM based phone, even my first Motorola brick had a
> SIM card. I have never seen a phone without a SIM card.
Verizon, on adopting CDMA, decided they didn't want to pay the extra
$3/phone or whatever for a SIM slot. :-/
> If you mean lock the keypad, then my phone almost always has the keypad
> locked (in my pocket) when I'm in the car. There is no problem making
> or receiving calls. I just checked on my phone and the pairing for the
> car is called an "Audio Device", so I guess it just uses the protocols
> for initiating and picking up calls, transferring the audio, and for
> transferring the address book.
Yeah, that's how my phone works, except it won't make a call if the phone is
locked. (Different from keyboard being locked - I can't even answer a call
if the phone is locked. It's a security thing, not an avoid-pocket-dialing
thing.)
--
Darren New, San Diego CA, USA (PST)
Understanding the structure of the universe
via religion is like understanding the
structure of computers via Tron.
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