Cingular Go Phone: AT&T 5800 Accessory Handset for 5800 Series Phones Review

I've been a cordless phone fan since the days of sub-50 mhz frequencies, and I've been using 2.4 Ghz phones around the house now for more than 2 years. They were really only a bit clearer than the 900 mhz phones they replaced, and their range was about the same. However, this high frequency seems to find itself isolated enough from household interference (lights, cell phones, etc.) to achieve real quiet! I would say the quality of the connection is almost identical to that of a corded phone.
The 5830 setup was simple: Plug it in to the phone line and power plug (the fairly small transformer is nice too), enter the base ID # from the sticker under the phone, and you're ready to use the phone.
The menus are just okay; they may be a bit less than perfect but they're usable without instructions. Anyway, from the menu, you may (but do not have to) select ring style, ring volume, vibrate or no, and enter the time digitally.
I've added 2 of these 5800 extensions and these are set up just as the base is, but the number you register on each handset is that of the base unit. Range and intercom on the handsets are great, and the voice quality again is comparable to corded phones, though occasionally we get a hollow echo on a handset.
In both cases, the called ID display is very nicely done. It is lit in a very attractive and functional blue with a large enough display to read both the name and number without (my) glasses.
Lastly, the message waiting light (I use the phone company's voice mail svc) is easy to see from across the room, it too a cool neon blue that illuminates an "O" around the ear piece. The effect is quite techno-hip, as well as being highly functional.
In short, the 5800 series is a very nice execution of a very good new technology.

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Product Description:
The AT&T 5800 is an expansion handset for use with AT&T 5.8 GHz models 5830 and 5840. You can add up to five 5800 handsets to your base station (not included) for a total operating capability of six handsets.
The expansion handset's LCD provides caller ID/call waiting information (subscription required). Enhanced audio technology derives from advances in acoustic design that have improved the frequency response relative to conventional cordless phones. The Sound Select feature offers four different audio settings: bass, mid, treble, and natural.
The handset receiver lights up with incoming calls or can be set to vibrate. It stores 50 names and numbers and works with your caller ID service to remember the last 50 callers. A spare-battery charging system enables the telephone to work even in a power outage. Choose from eight ringer melodies. Other features include a 50-name-and-number caller ID history, a lighted display, and a visual message-waiting indicator.
What's in the Box
Handset, charger/base, AC power supply and cord, model 2401 rechargeable battery, instructions, warranty information
Note: This handset is not a stand-alone phone; it requires an AT&T 5830 or 5840 base unit, sold separately.