Accessories

Panasonic flop
This is the first Panasonic product I ever considered a bad design. Forget the display. Without Hubble eyes, perfect lighting and angle you wont see squat.
Line2/data only sends data from Line2 of L1/L2 jack. An answering machine connected to that port (as shown in the manual) will only take calls on line 2. Almost useless.
Panasonic help will give you the wrong part number for a workaround line splitter adapter from Radio Shack but, will not send one to you.
Talk on line 2, get a call waiting, switch hook (like every other phone in the universe) to take caller #2. Phone switches to line 1, disconnects both callers on line 2.
Phone w/caller ID does not flash indicating that a call came thru.
Like the other reviews I've read, the number of speed dial buttons is only 3. Not very useful.
The few nice features it has are overshadowed by the shortcomings and not worth the money.

the best 2 line on the market
It's really the best 2 line phone with intercom and caller ID. I bought them 15 years ago for the first time, and they still work as new! it took me a while to find them again! ( I needed more extensions!).

compatible with our old intercom system
I plugged it in to the phone lines & it found our old panasonic phones. I was able to add it to the intercom system as the next number.

Great Speaker Phone
Panasonic is one of the few companies today making a 2-line corded phone with a decent speaker phone. When my 17-year old Panasonic KX-T3155 2-line phone developed excessive static, I decide to try out other brands to see how they stacked up. I bought GE, RCA, and AT&T models, but wound up returning them all to my local Staples, OfficeMax, and Circuit City stores. The speaker phone feature was implemented terribly on all the models (muddy sound, low volume, cutting out when no one was talking on the receiving end, non-functional mute buttons, etc.). If you use the speaker phone feature as much as I do (waiting on hold for customer service, conference calls, etc.), then this is the phone to get. I knocked off one star in the ratings because there is no light for the mute button (like on my old model). Instead, it just displays "Mute" on the LCD. FYI - For some reason, this model is not carried by virtually any retailer (and very few online websites), so that's why I used Amazon.com.

Not practical
I am usually a big fan of Panasonic products but this telephone is disappointing. I have had it for a number of years now and here are my main complaints:

- The display is hard to read because it is not backlit and the contrast cannot be fine-tuned very well. It is either too much or too little. The display part also does not tilt, so depending on the light in the room the user will have to make an effort to see the display at a suitable angle.

- There are only three buttons to store frequently dialed numbers. Way too few!

- Scrolling through the display to find a number is tedious and not user-friendly.

-There is also no way to delete all received calls from the list at once (at least I haven't found it). I have sat at this phone forever to delete these one after another after another...

I do not like this phone and wish I had paid better attention when buying. I can only recommend to anyone looking for a new phone to make a list of all the features they want and then check thoroughly whether the model in question has all of them. I didn't and ended up with this phone which annoys me daily...