Do these support zero hand-off?
1940160
Pretty sure they do. I can walk all over my office where we have 6 of them and never lose my connection to my xmpp client and ssh server.
746241
Sure, they'll work, if all you want to do is listen through them. They don't have an inline microphone or controls, so if you want to use them on a call, you'll still have to raise the phone to your mouth in order for the other person to hear you.
199213
Yes. There is a Multi-function button on top of the left ear bud that you can press to answer calls without touching your phone. It is also the power button for the device (which you hold down for 5 seconds to turn on or off).
448801
Yes. There is a button on the headset that answers and disconnects the call.
229277
No. They work over WiFi, using the Wink protocol, which I believe is proprietary.
135464
I do not believe so but, this system enabled me to go from nothing to full bars @ 3G (in the middle of NE), so now I don't have to climb our tree stand to make calls anymore! :-)
38356
To add to an intercom system, no; but put calls on speaker and dial calls on speaker leaves you hands free while multi-tasking.
827483
No. When I try to switch handsets when one is dying, they both squack until one is shut off.
1033492
Yes. Needed those numbers to activate the phones. I bought two and am very happy with them.
1526781
Not that I am aware of. Jitterbug uses their own service and I think they are supported by Verizon.
1443563
Yes, there is a function on the phones for intercom between hand sets, they both have to be in the intercom position and the base would have to be on but doesn't have to have the phone line connected.
1374535
Not sure of the questions as these are not remote handsets. They stay stationary on the desks so range is not a concern. Please clarify.
50134
I'm not sure if this is what you mean, but you can set a soft-switch in the menu so that if you're on a call to an outside line other handsets can't pick up on that call. I hope this helps! Bob
1500799
Yes, You do. You only have to enter on one handset and it goes to all of them. My old one you had to enter to each set.
243606
Yes but I don't use them. Too easy for me to lose a phone if it comes off. I put mine in my back pocket.
228368
Yes they do, you use the iPhone answer button to pick up the call and the button on the headphone cord will hang up the call!
1977110
Not sure...I'm at work so cannot check them to see if they would work as hands free, but if memory serves me, I think they do.