Very sure.  :)

You will be able to accept incoming calls from any device, it wil be
best to start any outgoing calls on the phone you wish to use.

pzboyz.

pzboyz wrote:

You've missed some very important details about this:
There are two "profiles" (Bluetooth terminology for protocols) in
common use for connecting headsets to phones:

The older one is called the "headset profile" and was used on the first
Bluetooth devices. It is still supported by many devices. With the
headset profile, your BT headset sits in a low power mode until a
device connects to it. When an incoming phone call happens, your phone,
laptop, etc. will establish a link to the headset and start playing the
phone call's audio to it.

This means that if you can pair 50 phones with it, you can leave it
within range of those 50 phones, and the first one to get an incoming
call will connect to your headset and everything will work. Of course,
the _second_ phone will fail to connect because the headset is already
in use.

The newer profile is the "handsfree profile." This one is designed to
allow more advanced features such as menu options on the headset, phone
dialling, caller ID display, etc. It is also designed to make it easier
for all system audio - not just phone calls - to go over the link to
the headset.

Specifically, when you use a handsfree profile headset with a phone,
there is a link established between them as soon as they're turned on.
Control signals can be sent over this link, but there's no audio
initially. The phone can send audio whenever it wants - which should be
a lot faster than with the older profile, since there's already a link
active.

The downside of this is that you can only actively use this headset
with one phone at a time. If the headset and phone are both on, they
expect to be communicating. That means you can't let another device
just use them.

Most modern headsets support both profiles; most modern phones do as
well. It may be possible to  coerce a headset into pairing using the
older profile, so that you can take advantage of the benefits of it.

Personally, I have an old Ericsson HBH-15 I picked up reconditioned for
$25 that I use on my computer for VoIP, and an HBH-65 I used for my
phones. Despite the multiple pairing support that is theoretically
there, in practice it gets irritating quickly.

gopi.