We have a DECT 6 system with a base unit and five satellites. Suddenly the satellite phones don't work, but they are alive (with no dial tone and don't ring) and show a message "out of range". The central base unit still operates normally. The satellite bases seem to be charging, and bringing the extension phones near the base unit doesn't help. Can you advise what is wrong and how to correct this?

If you have no dial tone the problem is most likely the base station has failed, nothing you can do will kill the dial tone (no button you pushed etc.) except a failed base station.

That indicates that the phone is not synced with the base station. Try putting it next to the base station and resetting. Here are some links that may help:

Uniden Products Cordless Phones DECT 6 0

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=0CC4QFjAB&url=http%3A%2F%2Fwww.uniden.com%2Fpdf%2FDECT1580om.pdf&ei=HO_0VMCaAYHBUrC1g9gC&usg=AFQjCNEuoWsWGZb3TMlpBHaoUSj-HaQ7mQ

Home at Uniden America

Hi Pam,
Try these..1...remove your telephone line from base unit and fix it into a working land phone and check whether is it having normal dial tone.If it's having engage tone(beep beep...)remove paralleled phones and re connect to cordless base unit.
2.If line is ok (normal dial tone with full volume) & still display indicates line is busy, your main base unit must be having faulty components inside.Commonly these defects happen in thundering or surges through telephone lines.You have to take full set to a repair shop.
Rana.

NO RINGING ON INCOMEING CALLS

get closer to the base unit when you calling

Resetting the voice message waiting indicator
When you receive a new voice mail message, the new message LED on the top of the handset flashes. In the event your message waiting light gets out of sync with your phone company's
voice messaging system, you can manually reset it back to the "No messages waiting" state.
1. Press and hold FiND on the base for five seconds.
Note: The handsets connected to the base will start to beep, however, keep pressing for five seconds.
2. A beep sounds and the message alert tone is reset.
Changing the dial mode
Your phone can communicate with the telephone network in two different ways: tone dialing or pulse dialing. These days, most base networks use a method called tone dialing, so your phone comes programmed for tone dialing. If your phone company uses pulse dialing, you will need to change your phone's dial mode. If you don't get a dial tone or can't connect to the telephone network, please follow the steps below to modify your phone's settings:
1. Press MENU/SELECT.
2. Select the Global Setup menu, and then the Dial Mode submenu.
3. Scroll to highlight Pulse.
4. Press MENU/SELECT. You will hear a confirmation tone.
If you ever need to change the dial mode back to tone dialing, follow the same procedure, but select Tone in step 3.

Finally for future ease of use, here is a link to the user manual were I copied the above information from:

http://www.uniden.com/content/ebiz/uniden/resources/ownersmanuals/DECT1580-3om.pdf

A TD system is a DIGITAL phone system and the 7730 phones are ANALOG. I don't know what X means, but I guess they're not from the US :-). Anyway, the ANALOG phones need 4 wires to work, instead of the 2 that the digital phones have. If your installer was lazy and didn't cross-connect 4 wires at the frame or put in 4 bridge clips on each jumper, then you don't have a voice path. Or, XDP is turned on and you'll have a bit of a problem.

If you have an IM and a PM for the TD system, you can find the wiring diagram and the instructions to read the XDP status. Quick answer is the first 2 of every 3 pairs will run to your phone. If you start with a digital phone in the port first, turn on XDP and plug a single line set into the XDP port, you will get dial tone (may have to dial 390 or 391 to enable/disable the XDP twinning) and that dial done will be different from the digital phone. If you don't get dial tone, your first pair wiring is missing. Fix that, turn off XDP and you 77xx series phone will now work in the port.

Carl

Check the Battery on the Handset. remove the pwr frm the base unit n connect aft 30 sec. aft this if it still says the same msg, then the handset needs to be replaced.

Then the receiver is defective on that handset