Search for Bluetooth Devices - how many it will display?

Search for Devices looks for Bluetooth devices – but how many devices
can it found – for an example if there is about 50 devices (10 meters
from computer) will it display all 50 devices, and I can choose the
device I want to connect?

Maybe it depends from the device? But what it is the standard?

sp

It can probably "see" all of them, but only connect to 7 at a time.

Look at Trust - Bluetooth information:
http://www.trust.com/service/help/bluetooth/#4
Under 4.3
"A master Bluetooth device can connect to a maximum of 7 slave devices."

-Dan

"sp" <> wrote in message
news:%...
> Search for Devices looks for Bluetooth devices - but how many devices can
> it found - for an example if there is about 50 devices (10 meters from
> computer) will it display all 50 devices, and I can choose the device I
> want to connect?
>
> Maybe it depends from the device? But what it is the standard?

LittleMoo napisa³(a):
> It can probably "see" all of them, but only connect to 7 at a time.

I know that I can connect to 7 at a time - but I need to know that I
will see all of them - is there a maximum?

Your answer is 255 inactive + 7 active at a time.

Answer gotten from:
Bluetooth Communication & connection on Wikipedia:
http://en.wikipedia.org/wiki/Bluetoo....26_connection

-Dan

"sp" <> wrote in message
news:%...
> LittleMoo napisa³(a):
>> It can probably "see" all of them, but only connect to 7 at a time.
>
> I know that I can connect to 7 at a time - but I need to know that I will
> see all of them - is there a maximum?

> Your answer is 255 inactive + 7 active at a time.
>
> Answer gotten from:
> Bluetooth Communication & connection on Wikipedia:
> http://en.wikipedia.org/wiki/Bluetoo....26_connection


Thank you! And the final question could you recommend and BlueTooth
deviced that I can connect via USB compatybile with 255 inactive + 7
active at a time?

Any device that supports Bluetooth will support the 255 + 7 connections - if
you have a wireless card in your laptop then it might support bluetooth.
There isn't one device in particular that I could recommend, but a lot of
cell phones and PDA's use bluetooth.

-Dan

"sp" <> wrote in message
news:...
>> Your answer is 255 inactive + 7 active at a time.
>>
>> Answer gotten from:
>> Bluetooth Communication & connection on Wikipedia:
>> http://en.wikipedia.org/wiki/Bluetoo....26_connection
>
>
> Thank you! And the final question could you recommend and BlueTooth
> deviced that I can connect via USB compatybile with 255 inactive + 7
> active at a time?

### Wrong ####

Bluetooth needs the device to be in a discoverable mode to be found as part
of the security. As such if you are in a school with say 200 Bluetooth
devices and you try to discover them, you may discover none of them, or just
a few that happen to be in discoverable mode at the time.

David Hettel

Please post any reply as a follow-up message in the news group
for everyone to see. I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.

Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com

DISCLAIMER: This posting is provided "AS IS" with no warranties, and
confers no rights




"sp" <> wrote in message
news:...
>> Your answer is 255 inactive + 7 active at a time.
>>
>> Answer gotten from:
>> Bluetooth Communication & connection on Wikipedia:
>> http://en.wikipedia.org/wiki/Bluetoo....26_connection
>
>
> Thank you! And the final question could you recommend and BlueTooth
> deviced that I can connect via USB compatybile with 255 inactive + 7
> active at a time?

I was only going by the Bluetooth specs for this, not actual real-world
situations. In theory though if there were say 50 devices all in
discoverable mode and one laptop that has a Bluetooth USB adapter used as
the master device then the spec says that the laptop should be able to
(theoretically) "see" all of them. I don't know what the purpose of
something like this would be though.

"David Hettel" <> wrote in message
news:%...
> ### Wrong ####
>
> Bluetooth needs the device to be in a discoverable mode to be found as
> part of the security. As such if you are in a school with say 200
> Bluetooth devices and you try to discover them, you may discover none of
> them, or just a few that happen to be in discoverable mode at the time.
>
> David Hettel
>
> Please post any reply as a follow-up message in the news group
> for everyone to see. I'm sorry, but I don't answer questions
> addressed directly to me in E-mail or news groups.
>
> Microsoft Most Valuable Professional Program
> http://mvp.support.microsoft.com
>
> DISCLAIMER: This posting is provided "AS IS" with no warranties, and
> confers no rights
>
>
>
>
> "sp" <> wrote in message
> news:...
>>> Your answer is 255 inactive + 7 active at a time.
>>>
>>> Answer gotten from:
>>> Bluetooth Communication & connection on Wikipedia:
>>> http://en.wikipedia.org/wiki/Bluetoo....26_connection
>>
>>
>> Thank you! And the final question could you recommend and BlueTooth
>> deviced that I can connect via USB compatybile with 255 inactive + 7
>> active at a time?
>
>

LittleMoo napisa³(a):
> I was only going by the Bluetooth specs for this, not actual real-world
> situations. In theory though if there were say 50 devices all in
> discoverable mode and one laptop that has a Bluetooth USB adapter used as
> the master device then the spec says that the laptop should be able to
> (theoretically) "see" all of them. I don't know what the purpose of
> something like this would be though.

I need to identify people that have GSM/bloetooth with discoverable
mode, I don't want to connect them only identify. So are you sure that I
see all of them?

Most devices implement "discoverable" mode for only a few seconds at a time.
As such if you had a room full of 200 people, and you told them to put their
device into discoverable mode now, in theory you'd get a list of all of
them. Having actually used Bluetooth, I'd say it's very unlikely you'd get a
list of all of them in the above example If on the other hand you did not
tell them to put their device into discoverable mode, you simply had a room
full of 200 people with cell phones I would expect to see 0 found.

Does that help any?

--
David Hettel

Please post any reply as a follow-up message in the news group
for everyone to see. I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.

Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com

DISCLAIMER: This posting is provided "AS IS" with no warranties, and
confers no rights


"sp" <> wrote in message
news:...
> LittleMoo napisa³(a):
>> I was only going by the Bluetooth specs for this, not actual real-world
>> situations. In theory though if there were say 50 devices all in
>> discoverable mode and one laptop that has a Bluetooth USB adapter used as
>> the master device then the spec says that the laptop should be able to
>> (theoretically) "see" all of them. I don't know what the purpose of
>> something like this would be though.
>
> I need to identify people that have GSM/bloetooth with discoverable mode,
> I don't want to connect them only identify. So are you sure that I see all
> of them?