How do I get a new manual" I need it when I have trouble.with my phones like today couldn't get a dial tone.

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

SAme problem here. No dial tone. Did you find solution?

It's a good bet that the line is dead before it comes into the building. Call your service provider and start a trouble ticket.

I think you need help from your telco, not from me. This looks like a local loop problem if you have no dial tone. Call your telco and say, "No dial tone, no internet". They will dispatch repair..

check the the phone line, The fax sinal need good clear. Surely,plug the phone-line is rigth line socket. If you do that all, the broblem is still happenning,need to change "relay" on moderm fax board.

Here's what the manual says: Changing the Dial Mode (Tone or Pulse Dialing) (HS1 only) Your phone can communicate with the telephone network in two different ways: tone dialing or pulse dialing. These days, most phone networks use a method called tone dialing, so your phone comes programmed for tone dialing. If your phone company uses pulse dialing, you need to change your phone's dial mode. If you don't get a dial tone or can't connect to the telephone network, follow the steps below to modify your phone?s settings: With the phone in standby, press and hold [cid/menu]. Press [vol/ / ] to move the pointer to select DIAL. Press [select/channel] to set the phone to pulse dialing. Press [end]. Return the handset to the base. The handset communicates the new setting to the base, and the base activates the setting on any other handsets. Hope this helps out. K

Make sure the dial tone is coming into the house at the phone company's "DEMARC" after that is good then trouble is just inside the wiring in the house

Have you tried a known good phone in the jack, if that doesn't work take the phone to the demarc box provided by your phone company and open the door on the box. Under this door locate the mini jack and disconnect it, then plug your known good phone into that jack. If you get no dial tone at this point, then it isn't being provided by the local phone company so it's their trouble. Thank you. Jerry

Is the phone wire from the wall jack plugged into the slot in the back of the machine marked "line" and not "phone"?

sure...check the line, with a phone..do you have call waiting or something like that enabled..that can cause some issues, with the tone interruption to the internal modem.