I'm sorry that I did not read the other reviews carefully enough.  In particular, pay attention to John P Benson's.  I could not believe what he said was true, but it is:  1) There is no light that comes on when another phone on the same line is in use.  John says it only works with another phone of the same model.  I can't confirm that.  2) There are only 3 buttons to program with phone numbers.  You see all those buttons on the side?  Those are for intercom extensions!  (There is a 50 number directory that you can get at by pushing more buttons)

Unmentioned on John's review, but a showstopper for me:  There is no detection of phone-company voicemail (stutter dial tone). I probably should have noticed that it was not called out explicitly, but who would guess that a reasonably expensive fancy phone would not have that?

Annoyances:  By default it will pick a free line when you call out.  But one of my lines is my office with unlimited calling features, while the other is my home where I pay for each call.  I don't want to be talking for 2 hours to someone on the other side of the world before realizing that I'm on the wrong line!  You can set it to go to a particular line, but I think if you do that, it does not switch to the ringing line when you answer.  (I was packing it back up before I had a chance to try, I admit).  It also insists on going to speakerphone when you push a line button to choose the line you wish to pick up.  Sigh.

And finally, a minor annoyance:  Caller ID does not set the time and date unless you have already set it.  (Huh? I don't get that one!)

The phone appears to be solidly built.  There is a significant instruction book with it.  I called their 800 number to confirm that I was really right about these features and they were very helpful (but said I was right).  But especially the missing voicemail light is going to make me return it.
I'm sorry that I did not read the other reviews carefully enough. In particular, pay attention to John P Benson's. I could not believe what he said was true, but it is:  1) There is no light that comes on when another phone on the same line is in use. John says it only works with another phone of the same model. I can't confirm that. 2) There are only 3 buttons to program with phone numbers. You see all those buttons on the side? Those are for intercom extensions! (There is a 50 number directory that you can get at by pushing more buttons)

Unmentioned on John's review, but a showstopper for me:  There is no detection of phone-company voicemail (stutter dial tone). I probably should have noticed that it was not called out explicitly, but who would guess that a reasonably expensive fancy phone would not have that? Annoyances:  By default it will pick a free line when you call out. But one of my lines is my office with unlimited calling features, while the other is my home where I pay for each call. I don't want to be talking for 2 hours to someone on the other side of the world before realizing that I'm on the wrong line! You can set it to go to a particular line, but I think if you do that, it does not switch to the ringing line when you answer. (I was packing it back up before I had a chance to try, I admit). It also insists on going to speakerphone when you push a line button to choose the line you wish to pick up. Sigh. And finally, a minor annoyance:  Caller ID does not set the time and date unless you have already set it. (Huh? I don't get that one! )

The phone appears to be solidly built. There is a significant instruction book with it. I called their 800 number to confirm that I was really right about these features and they were very helpful (but said I was right). But especially the missing voicemail light is going to make me return it.