Does the unit with battery still need a landline/cell station for the function light to go on?
174622
Needs a landline. Won't work with cell phone. Think function light only comes on during programming? It's a simple device but works great!
174623
You need a landline, so it can call you, not meant for a cell phone. As far as the function light going on, that should be from the battery, as far as I know.
1278827
gets power thru the phone line (it has to be connected to your land phone line)
2149803
you mean "From cell phone"? what ever it is, I believe this model need a land line to work.
953058
To my best knowledge, wall phones do not require batteries. They are considered a land line.
1149058
Yes of course it's works without land line, but you won't receive calls to your land line on this device in this case
295599
Yes. A land Line is not required for the device to work with your cordless handset.
1479111
No, you don't need to have a landline for the alarm to work but without one you won't be notified of an alarm condition if you're away from home.
1479110
Yes. It must be plugged into a land line wall port in order for the system to call your programmed numbers/phones in the event of an alarm.
1779493
It needs a land line phone, but it does not require land line phone service. It just needs the physical wiring.
995999
Following this question, does it run on a battery backup or on the power in line, as a regular phone line (no electricity involved)
1657985
No, because it is a fax machine. I mean, a regular fax that needs a land line for the fax to work.
1597981
You only need to use your telephone plug in. From the phone - to the caller ID - and then to the wall. Very easy. There is a battery back-up.
2233391
You don't need batteries for the phone itself, but if you have Fiber Optic Service, you will need call Verizon. Verizon needs to install some sort of converter box. This desk phone comes with a 12 ft. line cord with a universal phone plug. Is your residence wired for metallic, copper phone landlines? Have Verizon sort it out and tell you what it will cost. This IT&T phone is good quality!
157741
Yes you need a land line. You will not get a text message but rather a voice message from your sump pump stating what the problem is.
2259342
Batteries are needed for the caller ID to light up. No power cord is needed.
1023011
No..it needs batteries to power the display, the stored numbers and speakerphone. Hope this helps.
1869490
No. There's no way to toggle the light on or off manually, however you can leave the headpiece off the base and that will keep the light on but does not keep the phone line open so you can still receive incoming calls.