First, there is the lack of DSHG interface for DECT headsets that goes beyond the limited radius of 10 m of the Bluetooth headsets addition. Now they'll agree after years of incompatibility at last on a uniform interface for Gigaset DECT headsets and provides this not in this modern station. While it is in hindsight such an interface implement. But but you have between 120, - and 150, - shell and loses the bargain the warranty, because this is an internal manipulation of the unit. An alternative would provide GAP-enabled headsets that can be registered as it were, another mobile station. But you want to perform with such a headset a call, you have to make the connection and if this is then diverted to the headset first on the station. But what customers are expected of such antics? There remains only the Bluetooth interface to receive calls, reject, dial or to reconnect. Here I recommend the Jobra GO 6430 or the smaller Jobra GO 660. Both can be integrated without problems and have a first-class noise-free voice quality that virtually no different from the corded handset. However, the DX800A has only one interface of the device class 3, ie with maximum reach of 10 m. Therefore, the Jabra GO 6430 is oversized with the device class 1, because the scope could be up to 100 m here. Here was thus saved also at the wrong place at the DX800A.
Negative factors also proposes the integrated answering machine. The announcement quality is poor. In addition, the two individual announcement texts can not control time, for example, from ... to ... announcement 1 and announcement from ... to ... 2. It can be integrated only a text time. In the remaining time, an individually recorded Announcem be chosen, but they can not accept calls. I use for more than one and a half decades, two ISDN classic Tiptel 195. The integrated answering machine are in the recording and playback quality despite the age even consider the DX800A. So you have to obstruct good voice chips before almost 20 years. Today that's no longer appear. Whether the DX800A by more than 12,000 phone calls still works so perfectly as the Tiptel 195, I doubt it. Who has a Tiptel, which should not merely sell. If in doubt, this is still the reference. Too bad that time VoIP and Browserkonfigurierung was still science fiction and that ISDN is already a thing of the past.
I would - as a conclusion - like have been willing to pay 50 or 100 euros more to these shortcomings have not. Possessed the DX800A these additional qualities, this phone would be a bright shining star alone in the vast Phonoversum. Too bad that you do not consistently trimmed this station on professionalism, because the phone has a lot of excellent approaches. So new is not better, which is unfortunately often the case.
TIP: The software "Call it" rent-a-developer. de gets out of the machine a great added value. This lot is compensated.