The 848 is not easy to program.
You do not need to change systems to get a great cordless.
The 7690 phones look good, but: they are too small, the speaker is small and tinny. Do not get them without your dad trying them out talking on a real phone line. They are "PHAT" but mostly younger people like them. A large home could require up to 4 cell base stations for proper coverage, depending on construction, roofing etc.
A dealer can do a range survey
Look at the 7896 2.4 gig phone. It does not use cell stations. It will cover a huge house. The speaker phone is loud and clear and also the earpiece or headset jack. It is very well made and looks to hold up better than the 7885 & 7895, has lots of ring tones and melodies and other cool stuff.
Best features: has auto answer just like a reg system phone and receives pages. So you can have the phone outside and hear when an 'all page' is made. Working in the garage? Just set the phone
on a table or work bench and if called you can talk back even if under the car, just look towards the phone and talk loud, just like a std system phone. Of course it will ring and vibrate or silent vibrate also. You get 12 line intercom keys and 12 feature keys to select through the display. The display is large, easy to read, you can actually see caller id info, and has a cool blue light. You will not be dissatisfied with this phone. And yes you can answer the gate with this unit, no problem.
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