Rating: 
Summary: Nice-good features but NOT built to last...
Review: I have had this phone for approximately 1.5 years now. The base works pretty good with the corded handset, however, the handsets (I have two) are not worth a plugged nickel! I have replaced the batteries in both handsets and they still do not function properly. The big problem is they lose the sound coming in -- but reception is strong. Go figure...
Rating: 
Summary: excellent product
Review: Great product. A tad complicated to set up and get the system going. Excellent sound quality and answering system. Works well in our large duplex condo. Good value and investment.
Rating: 
Summary: A major disappointment
Review: I can't wait to get rid of it, even though I made a considerable investment in it (the base station and 5 additional handsets).1) Very poor user interface
Commonly used features are buried in the menus. For example, to delete messages, you must use a convoluted menu and drill four levels deep. Miss a beat? You get to start over. Records all "unavailable" calls as separate calls (where it displays one time for known callers. 2) [Poor] documentation
Is the documentation confusing because the design of the phone doesn't make sense? Whatever the case, the documentation is nearly worthless. 3) The handsets are unreliable
Better talk fast, because your handset battery will last about 20 minutes and then die. Don't ever leave a handset sitting out of the charger over night because it will wake you with its beeping before it dies. I have five handsets, and 2 of them have buttons that stopped working properly within several months.
Rating: 
Summary: Fabulous phone Model 8825
Review: I've read alot of the other reviewers comments, I can't agree with most of them, this phone has not had one problem. Be sure, I am talking about the 8825 model. I have to think that most of the people with problems are talking about the old 2400 model because they are saying that they have had them two years, well this phone, the 8825, hasn't even been available for two years. Yes, I had a 2400 model and most of the complaints sound about right for that one, except if you would put NiMH batteries in the 2400 it won't have any charging problems anymore. The 8825 is a completely different phone, sound quality is darn near corded, lots of features and call options. One reveiwer states that there is no way to call out on line 2, but there is, in the systems settings menu you can choose for each handset whether you want the primary line to be 1 or 2. As for battery charge indicator, all you have to do is look at the battery icon on the hand set, it blinks while it is being charged, shows approx level of charge, and shows full battery and quits blinking when fully charged. As for the directory, I like that each phone can have it's own directory because I can put my numbers in my handset, the kids can put their numbers in theirs, and so on. Why would I want my clients phone numbers in a central directory. As for range, it isn't the best, but it does work all around the house and in the yard, but most of the 2.4 gig phones don't have as much range as some of the older 900mh, but it is hard to find a quality 900mh phone these days. The only phone with really good range is the Engenius 920.
I haven't tried a 5.8 gig phone yet so I can't comment on that.
Rating:
Summary: Great base station; Poor sound quality
Review: Feature-wise, this phone was perfect for me. The quality of the base station seemed very solid, right down to the push buttons and overall aesthetics. However, the handset was very noisy w/intermittent squawks even without the microwave running. When the microwave was on, forget it. I really wanted to like this phone, but audio quality is paramount. It misses badly on what should be its best attribute. I returned it.
Rating:
Summary: Poor reception/coverage
Review: I was very dissapointed with the Gigaset 8825. After using a 900MHz single-line phone for several months, I decided to migrate to a 2-line 2GHz. I was expecting a better reception, and at least the same as with the 900MHz single-line phone. But a stacatto reception on the handset dissapointed me. I am returning it.
Rating:
Summary: One b/c there is no ZERO star
Review: I am absolutely appalled with Siemens. I used a Panasonic 900MHz phone for years without a single problem - it wasn't great but it always worked. I bought the Siemens 2-line phone system and everything worked great for about a year... great sound, great features... but then as the year wore on - and the warranty was about to expire - problems started. The first of three handsets started a stoccato reception, a key pad number failed... it was barely inside the warranty period so I received a "refurbished" handset... Well, long story short, it's been 2 years now and all three of the handsets have failed in some way or another. The Display on one has completely died. The display on another comes and goes. One just died altogether. And that stoccato reception was on all 3. That makes a total of 4 handsets that I have failed. They're in a box now in the closet. I'm using the Panasonic again. I called customary service - before I knew how rampant these problems were - and I expected Siemens to send me 3 refurbished phones because I expected them to stand behind their products. They politely blew me off. It was beyond the warranty and would be glad to sell me new phones... ...It looks good, and it works for a while and then it fails right when the warranty expires. Be Warned.
Rating:
Summary: improved over the 2400 series
Review: The 8825 is a big improvement over our old 2400 system.
2400=made in USA, 8825=made in Germany - and it shows.
Setting up is complex but worth the effort. Once it's all set it's a simple to use system. Manual is improved but not perfect, the 800# will help. If you prefer European design (aka Bauhaus Passat) over Japanese design (aka Speed Racer Celica) you'll love the styling; similar to NAD/Adcom.
For those with a computer wireless network (Apple Airport in our case) there appears to be no conflict, even with base station near hub.
Rating:
Summary: Disappointed
Review: This telephone system isn't all its cracked up to be. They constantly need recharging and sometimes just cut me off in the middle of a telephone call. Also, the display suddenly doesn't work and Seimens refuses to fix it. I gave it a rating of one because it looks good and it has good features. But what good are the features if the whole thing doesn't work anyway. I guess you get what you pay for.
Rating:
Summary: Warning
Review: This is the worst phone system you could buy. I have many friends that agree. All of the handsets will fail to work within two years. Either they will not hold a charge or they will become inaudible. I have spoken with Siemens many times, I have purchased replacements and even they admit that it is common for these phones to simply die within a year or two. They claim that "it is a common occurance with electronic phones". It is too bad because they had the right idea but unfortunately, it is simply an inferior product.
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