Siemens 8825 Gigaset 2.4 GHz 2-Line Expandable Cordless Speakerphone with Answering System

The lightweight handset provides call transfer, conferencing, intercom, and room monitoring. It weighs just 7 ounces and has controls for volume, call waiting, flash, and last-number redial. Two AA rechargeable NiMH batteries (included) provide eight hours of talk time and eight hours of standby. The base and cordless handsets provide digital speakerphones and headset jacks for hands-free conversation. Additional handsets require no extra phone jacks.

A built-in answering machine completes the system. It has four mailboxes, date and time stamp, individual announcements for each incoming line, and 45 minutes of recording time. The unit also supports full remote operation, so you can collect messages while you're away.

What's in the Box
Base station with built-in tilt LCD, corded handset, coiled handset cord, cordless handset, cordless charger/base, AC power supplies and cords, two AA rechargeable NiMH batteries, one belt clip, telephone line cord, instructions, warranty information

Product Description
Whether it is digital cordless products, mobile Internet devices, or home networking, Siemens offers mobile communication products that allow you to truly experience wireless freedom and total mobility!The Gigaset 8825 cordless phone system offers superior voice quality and security thanks to its 2.4GHz digital technology. The phone offers different expandability features and a 2-Line multi-user capability; a fully digital answering machine with four different mailboxes and an auto attendant feature that allows the caller to route the call to the correct mailbox. Its voice-announced caller ID function allows you to use your own voice to announce incoming calls at the base. To crown it all, Siemens Gigaset 8825 cordless phone system supports up to eight Gigaset cordless handsets with no extra phone jacks required. Siemens - the ultimate in design and functionality!

Gigaset 8825 features that I love:
1. HANDSETS -- The handsets are "dense" - just heavy enough to feel solid and high quality - much better than the old, light, "plastic", cheap ones from the Gigaset 2420 system. The handset speakerphone is a feature I didn't think I would want or need, but it works great. The ability to give each handset your own "name" (like kitchen, or family room, or upstairs bathroom) makes the intercom capability much more useful than trying to remember where handset #3 is!!!
2. BASE STATION -- The speakerphone works fine - almost as good as a Polycom speakerphone. The "MUTE" function on the base station works great - I just wish that the handsets had a mute! The base station has attractive clear backlit buttons for some functions, like Speakerphone/Mute, Calls, Voice-Mail, Intercom, Flash, etc. But it does NOT have clear backlit buttons for the telephone number keypad used for dialing - a big flaw.
3. ON-LINE PRODUCT REGISTRATION -- May seem like a trivial thing, but I love the fact that Siemens lets you register your purchase on-line via the web site. I wish that the registration process directly solicted feedback -- They currently only ask for the essentials.
4. MULTI-LINE MADE EASY -- Unlike the Panasonic KX-TG4000B, you can easily join a call already in progress. So, if Gramma calls and one family member answers the call from one of the cordless handsets, anybody else can easily join the call by pressing "TALK" on one of the other handsets or the base station. On the Panasonic KX-TG4000B, the first person to answer must "invite" others to join using a complicated Conference feature.

Gigaset 8825 FLAWS:
1. HANDSETS -- Although significantly improved over previous generation (2420) handsets, the 8800 handsets still lack a "MUTE" button -- critical for conference calls. Siemens needs to add an explicit physical button to quickly select MUTE (when the baby starts crying), not just a "menu item". Also, the telephone number keypad used for dialing still has black plastic buttons with no back-lighting. This makes it impossible to dial in the dark. Siemens needs to make the telephone number dialing buttons clear and back-lit, on both the handsets and the base station. And, there is NO way to start a new call on Line #2 -- when you press "TALK" it always selects Line #1, without giving you a choice. The only way to get Line #2 is if one of the lines is already in use -- then it gives you a choice (e.g., Join line #1, or Use line #2). Finally, the handsets need explicit buttons for volume, just like the base station. Using the menu system on the handset to change the volume is tedious and time-consuming.
2. HANDSET CHARGING CRADLE -- The new handset charging cradles do NOT have a light indicating that the phone is charging. There should be a RED light indicating that the phone is charging and needs charging, and a GREEN light indicating that the phone is already fully charged.
3. BASE STATION -- As mentioned earlier, the telephone keypad needs clear and back-lit number buttons for dialing in the dark. The base station also needs a rechargeable battery back-up, in case of power outage.
4. DIRECTORY -- Although you can "transfer" directories of names and phone numbers from one handset to another, a centralized directory always shared across the entire system would be a huge improvement for home environments.
5. VOICE QUALITY -- Although voice quality is greatly improved, I would still pay a premium price for a cordless phone with higher quality voice. Why can't somebody make a cordless phone that sounds like a wired phone? I want CD quality voice on my cordless phone!

CONCLUSION -- The Siemens Gigaset 8825 is the best multi-line, multi-handset, cordless phone system I have ever owned. But, if Siemens makes additional improvements, I'll buy the next model to get needed enhancements.


AWESOME features, best cordless available, but not perfect   March 5, 2002
Paul Christensen (West Chester, PA United States)
79 out of 84 found this review helpful

After spending quite a bit of time reading product reviews, and looking at a number of cordless phones in person, I finally settled on this Siemens 8825 set.

I must say that I'm quite impressed overall with this phone and its performance! As others have said, it is literally PACKED with features, from callerID, voice announcement, multiple voicemailboxes, call directories that can be sent between base and hand units, intercom, speakerphone in base and handset(!) and many many others.

You can register up to 8 handsets with a single 2-line base unit. Each handset may be registered with 2 different base units as well. It is important to note that the handsets use standard NiMH rechargeable AA batteries. This makes them very easy and economical to replace in the long-run.

The sound quality is oustanding - from base and handset phones. It is at least as good as my old trusty Panasonic "Sound Charger" which set the standard for good quality analog cordless phones. In 3 weeks of use, I have not experienced problems with handset hanging up calls that one other reviewer mentioned.

The callerID features are particularly well implemented. Incoming calls appear on the display of the base unit and all handsets (even during calls if you have callerID call waiting service). You can call a number from the callerID log, as well as save it to the directory. There is only ONE master callerID log - so using a handset to review and delete call log entries deletes them from the base unit as well.

The digital answering machine offers 4 mailboxes. By default, callers on line 1 go to mailbox 1, line 2 to mailbox 2, special ring1 to mailbox 3 and special ring2 to mailbox 4. Or, you can enable an automated attendent, that allows callers to direct themselves to a particular mailbox.

Unusual for cordless phones, Siemens has provided a configuration for "long DTMF" which enables touch tones to be held out for a longer period. This is useful if you're in a bad area or over a noisy connection, and need to communicate with an automated service (such as your bank, a calling card, etc).

While the manual is not always complete, the features and menus are generally logical and well laid out. If you're technically savvy, you should have no problem learning the features. Siemens does provide an 800# to call for help as well.

Having said all that, this phone set is not perfect. You cannot hear the actual touch tones being sent when dialing a call (i find this annoying but the numbers do show up on the display). The handset is small (about the size of an older cell phone), and does not balance as easily as a full-sized cordless handset. There is no battery backup for continued operation during power outages. The base unit offers speed dial for up to 10 numbers, but you must remember which number was stored in a speed dial location (the speed dial prompt only offers you single digits). The redial function does not keep trying if your caller is busy. The voice announce feature for recording your announcement is highly unreliable (you may have to try 5 or 6 times before it understands you recorded something). When recording greetings for the answering system, the unit always cuts off the very last half-second of your message.

The handset has its own set of limitations not found on the base unit: you cannot mute your call (you can put it on hold however). You can choose an outgoing line from the handset ONLY if this capability was enabled from the base station menus (this is confusing at first). If a line is in use, you can choose to conference in or call out on the other line however. Or, you can configure certain handsets to ONLY connect using a specified line. There is no "speed dial" on the handset. You must page through the directory (you can hit the first letter to jump to that location in the directory).

Even with all these limitations, the sound quality, and other features more than balance to earn a 4-star rating.


Undoubtedly the best available multiphone system   March 26, 2002
49 out of 54 found this review helpful

We have had our Siemens 8825 for only a few days. So far its doing almost all of what I think a phone system should do.

First of all, as one of the other reviewers stated, read the manual and be prepared to spend 2 to 3 hours on understanding the system, otherwise do not buy this phone system.

Several others have missed the " Automatic Line Selection" feature which allows you to disable the automatic selection of line 1 (factory default) and choose manual (i.e. either line) or selection of line 1 or 2 individually for each handset.

I recommend all Users go to Appendix C: the Base Station Menu Tree to quickly understand all the features of the system. The manual needs work; the feature of auto line selection is not in there.

My only complaints are the lack of two obvious features: mute on the hansets which diminishes the otherwise excellent speakerphone on each handset. Also, the inability to stop the answering machine once it begins recording from any of the handsets (you can do that from the base. Also, to make the cool voice announce Caller ID truly useful, Siemens should have made the feature work on each handset (as set by the user) as well, instead of only at the Base.

Otherwise an amazing system that actually delivers.


Definitely a high-end phone system   May 28, 2002
Jerry W Davis (Cedar Park, TX United States)
33 out of 39 found this review helpful

I agree with the Philadelphia PA review below. This is a great phone system. The majority of the features are ready to work right out of the box. However, this is NOT a system for anyone challenged beyond very basic plug and play.

The phone menu's are, in my opinion, very easy to use. Most frequently used features are available from dedicated buttons on the base unit and the handsets. If you use a modern Nokia cell phone, you will have no problem using this phone.

The biggest complaints about this and other cordless phone systems have been range from base unit to handset. I was worried about this myself before buying the 8825 phone system due to the complaints contained in other reviews. However, I was very pleased to find that the phone works exceptionally well throughout my home (bathrooms, closets, attic, I mean EVERYWHERE) and is very satisfactory within 150 feet outside of my home. I have purchased an additional handset for my shop and it works very well. My home is typical suburban residential 2-story construction in the Southwest with masonry exterior, 2X4 interior/exterior walls, gypsum wallboard, tile floors and carpet. Nothing special from a materials point of view. The base unit is right next to my computer, which doesn't seem to affect range one way or the other. The absolute worst problem is a popping sound when the microwave is running and a handset is within 10 to 15 feet of the microwave, so keep that in mind if you plan to place a handset in the kitchen.

Sound quality is slightly less than a wired phone. But the convenience of cordless operation makes this a non-issue.

LCD displays are good contrast and easy to read.

The speaker phone feature on both the base unit and handset work very well. As with any speaker phone, you have to be careful with background noise (TV, Stereo, Children, etc.) or you will not get satisfactory results.

I would definitely make this purchase again.

Now for the nitpicks, because nothing is perfect:

I bought the basic package and two additional handsets. Everything was packed in a highly professional way. The phones were beautiful. "This is commercial quality, top of the line equipment", I said to myself. And then I unpacked these cheapo rechargable batteries that shipped with the unit. I got over it pretty quickly, but it made me feel uneasy for a few minutes.

The user interface style, options, and terminology are slightly different between the base unit and the handset. Not enough to cause confusion but enough to make you wonder if two different software engineering teams worked on the 8825 system.

The menu buttons on the handset work differently from anything I have ever seen before. Two short but wide buttons that you operate by pressing down on the left or right edge in order to navigate through the menus. They look like one button that you just press down on, but they are actually two-buttons-in-one that you rock to the right or left. Very strange. They are a little difficult to use of you have big fingers (like me) but they seem to get the job done.

I am an engineer that likes things done a certain way and this next nitpick really bugs me. The base unit has two buttons for controlling the base unit volume. These buttons are labeled '+' and '-'. The '+' key is on the left, and the '-' key is on the right. When you press the '+' key, the base unit LCD display confirms that the volume is increasing by growing a bar graph on the display towards the right. When you press the '-' key, the base unit LCD confirms that the volume is decreasing by shrinking a bar graph on the display towards the left. This is backwards and very awkward when you look at the screen. If you are "user interface design" inclined, this will make you grind your teeth loud enough to garner concerned looks from your significant other.

The handset instructions don't mention anything about what looks to be a belt clip included in the package. At least I think it's a belt clip.

These are just nitpicks. They should not discourage you from purchasing what I believe is a well designed and very well built high-end home office or family phone system.


Great yet complicated phone but missing obvious features   March 17, 2003
29 out of 29 found this review helpful

I bought this phone to replace a few different cordless handsets, a seperate digital answering machine and a speaker phone in my home/home office. I am talking about the 8825 (as I can't believe that some other reviewers are.) Overall, this is a great system with a few caveats. Many people have complained about things like the inability to turn off ringers or answer certain lines from the handsets. This is almost exclusively due to the extremely poor documentation. If you are not "gadget inclined" DO NOT BUY THIS PHONE. It has many drill down menus which are poorly explained in the manual. You can only really understand them by doing some trial and error. As far as the quality goes, I have been quite impressed. The speakerphone has great sound BUT is not a full duplex as advertised. When you start speaking the other side cuts out. I live in an apartment building in NYC and have an 802.11b wireless set up. I doubt a more cordless phone hostile environment exists. That said, I have not really had any problems with reception - even while running the microwave. Occasionally there will be a click, but that maybe happens once a week or so and can't be heard by the person on the other side of the call.

The downside of the system:

It is missing several key features I would have expected on such an expensive phone system. I am going to list them below. Please keep in mind that I am fairly technically inclined, and have called Siemens to confirm that these features don't exist so you can be confident in my review:

1) There is no way to leave a memo on the answering system. For example, on most inexpensive answering machines you can push a button and leave a voice memo when standing over the machine. I find this really helpful if I want to leave a message for my wife and I know she will be calling in remotely to check the messages.

2) There is no way to transfer a call to any of the mailboxes after you answer it. The best you can do is to record the call.

3) The documentation is TERRIBLE!

4) If someone calls repeatedly, the caller ID log will only tell you the number of times they called and the time of the most recent call. You can't find the times of each individual call for the repeat dialer.

5) Although you can route certain Caller IDs to individual mailboxes, there doesn't seem to be a way to route all blocked or private caller IDs to a mailbox. You can only use the routing feature if the caller ID is in your directory.

6) The Caller ID announce feature is a gimic. It only is announced at the base station. Even with the volume all the way up, it isn't loud enough to be heard very far away. (Yes, the volume buttons are backwards.)

7) If you want to delete all messages, it requires drilling through several levels of menus. You can, however, use the delete key to delete an individual message while it is playing. (Maybe this is a safety feature to keep you from doing it accidentally.)

8) On the cordless handsets the volume can only be accessed by drilling through several menu levels. This makes it pretty useless as you have to take the phone from your ear to see the screen. In other words, you can't fix the volume without telling the caller. (This obviously isn't as much of a problem if you use an optional earpiece.)

9) There is no mute function on the cordless handset. There IS a hold feature, but that kills both the ability to listen or speak. There is a mute for the speakerphone though.

10) The call timer disappears as soon as you disconnect. This makes it difficult for an attorney to capture this info for a billing log. My old phone would leave the call time on the screen for about 10 seconds after the call.

11) The answering system does not have the ability to listen in on a room through the remote access. (Believe it or not, this is a usefull feature for me to call in and be able to hear if a print job has finished.)

As I said, overall I am pleased with the purchase and can live without the missing features. The phone seems quite solid and I expect it to last for a long time. One plus is that Siemens includes an 800 number where they will answer any questions you have. A bonus on their 800 number is that it is really easy to get a human on the phone without getting lost in a sea of voicemail prompts.

The phone has several features I haven't used, so there may be more shortcomings based on your own expectations. I guess the moral of the story is not to EXPECT this phone to have anything.