Review on 📞 Panasonic KX-TS4200B: 4-Line Integrated Phone System, Expandable up to 16 Stations with Speakerphone - Black by Amber Bennett

Another update 4/23/11 Adding to the comments below. In our own AT&T 1070 vs. Panasonic KX-TS4200B comparison, we finally settled on the AT&T 1070. Due to speaker/intercom line quality issues, both phones have this issue which, since the intercom works on radio frequencies, is usually caused by outside interference. So, in addition to my earlier comments below, 2 recommendations for determining the cause: 1. Make sure your mobile phone is not normally placed next to the phone on the table2. Follow this link to troubleshoot interference issues, especially make sure the power supply is plugged into an outlet and not the power board: [.] Last checked March 2011 - Updated. We recently bought these phones after blowing them up 4 years ago (see below). Panasonic has fixed most of their famous lag issues. There is no longer a delay in receiving a dial tone, but as others on this site have pointed out, there is a slight delay after pressing any number key in receiving a tone response. Some on this board did not survive. Others, like us this time, chose to live with it. If you call on purpose, no problem. But now we have or had another problem and a possible solution. We had to give up our old and newly purchased AT&T 4-line phones because, like others, we heard garbled words when speaking on the intercom - but only on the speakerphone. The handset and headset work normally on the intercom. We then bought these Panasonic phones again and experienced the same problem to a lesser extent. No point calling AT&T or Panasonic about this. They will just tell you to try hard resetting the phones, which doesn't help and if it does, it's probably only temporary. Here's a solution that we think may have solved the problem. We think the solution, whichever phone you buy, is to try and set up non-adjacent extensions that are said to operate on different frequencies and might interfere with each other by being farther apart. For example, instead of setting Ext 11, 12, 13, and 14, try 12, 16, 20, and 24. I can't guarantee this will help, but give it a try. Of course, AT&T or Panasonic are great phones if you're not an intercom user, or even if you don't mind intercoming with a handset or headset. But I believe AT&T has a higher risk of the intercom speaker failing at some point - just based on our own experience with the 974/1070 and reviews of this board. AT&T needs more reliable electronics. Previous Review - 2007 Panasonic has a design flaw in this device which is unfortunate as it is the best looking 4 line corded phone on the market and otherwise a great phone. The problem is that after going off-hook (or switching from one line to another) after immediately receiving a dial tone, it takes about another 1.5 seconds before the beep is heard from any of the number keys you pressed. During this delay time, during which you don't hear anything, just press 4 to 6 keys. It then catches up and begins dialing, albeit still more slowly than you originally pressed the keys. We have our four lines, on the first three we kept our original tried and tested FIOS lines, and on the 4th line we put the VOIP line. Same problem on all lines. We had another jack that we plugged into a new two-line Panasonic phone (KG-TX6700) and the phone worked fine until the buttons were pressed. We plugged the 4200B into the same outlet but experienced the same lag as before. Second 4200B bought - same problem. We think the 4100 and 4300 phones probably have the same problem. We went out and then bought our less popular AT&T 4 line phone (model 974) and it worked like clockwork. The Panasonic problem exists in at least two types of phone networks: Verizon's FIOS (fiber optic) phone lines and Verizon's VOIP service, which is trademarked Verizon Voicewing. I'm not sure if the problem exists on older copper networks, but if you try this phone be sure to test it. Another thing to check is how you use this phone. If you normally pick up the phone and only dial when the phone is to your ear (i.e. as opposed to instantaneous speakerphone dialing), you may not see this as a problem as it takes around 1.5 seconds to dial. Pick up the handset and hold it to your ear and by then the beeps will respond instantly. However, if you quickly switch between lines to get a quick dial tone, you will be in trouble. Otherwise a great phone but in relation to the above - buyers beware.