Summary: I really REALLY want to love this system... but I just can't. I'm about to replace it with a Uniden, and just connect it to an FXS adapter on my server. I'll start with he good stuff. It looks nice. I got a few SL78H handsets, which are very sleek and all. The charging bases are small and everything LOOKS nice. Voice quality on intercom calls is outstanding. The remote room monitor works pretty well, too. Now for the bad stuff. It does VOIP, which is cool...
Summary: Okay, let me preface the review by saying that the phone has a lot of potential. Having used the phone over the last 14 months, I finally have reached the stage where I cannot live with all the weird quirks of the system. I really wanted to make this phone work but it is just not ready for prime time, especially in the US. I was originally attracted to the phone given it is a hybrid POTS/ IP phone. However, it is just incredibly immature for day to day use.
Summary: We used this phone both connected to our wireless router and unconnected. Making a regular land-line call is a maddening process. You have to hit the top-left navigation button about 6 times for it to decide to make a land-line telephone call. That's because the features for this button are useless overkill, such as entering your location for the local weather or news. I don't want the local weather, I want to make a phone call!
Summary: I just bought this phone. Followed the instructions in charging phone and hooking up the base station. Phone and base bonded. Tested the phone to be sure it was hooked up and everything worked fine. The next thing the phone asked was to update the firmware. I followed the instructions to update the firmware. Once that was done, the phone and base station were no longer linked. Tried resetting everything without success. Called customer "service" for help.
Summary: I have used the phone with two different VOIP services and it worked with both. The sound is better that my old land line phone. It has a color display but not much can be done with the colors. It would have been nice if I could upload my contacts pictures. The wireless range is very good, throughout the house and outside. Supporting a land line works very well and you can choose which service to make calls on. Each handset an be configured as to which lines ring.
Summary: I bought this phone mainly because it stated it could handle multiple SIP-accounts and that it could attach a Bluetooth headset to it. Also important for me was answering machine and that it did not beep when putting back the handset in the main unit (many cordless phones do this). -I found out it could not handle the SIP-accounts I use from the VOIP-providers in the Betamax-group. I use Win XP and a Linksys router.
Summary: I purchased this Gigaset Base to extend the life of my old Gigaset handsets. I've got 3 different model Base units and 3 different model handsets and they call work together. It provides backward compatibility while extending newer features (like VOIP) to the old handsets. That's unheard of with any other manufacturer I know. Currently using with OOMA 1st gen with no issues. Call quality has improved over older models as well.
Summary: I ordered the Siemens as a replacement for an aging Panasonic system that we needed more handsets for anyway. Prior to buying the Siemens, I'd fooled around with VoIP using a Sipura ATA (SPA-3000), and while it was decent, the configuration practically required a technical certification to decipher and properly program all on its own.