I have 3 lines they will not ring up when you are on the line no one can call they get a busy singal but the other line work when you dial that number

Sounds like your phone has a short. If you see the message "line in use" call your number, is it busy, now unplug your phone and call your number again, is it ringing? Indicates a short, possibly in your equipment. As for message " no line" is the electric connected to the phone and did you check for dial tone in tat particular jack with a known, working phone first...just to make sure there's dt @ the jack. Good Luck :)

What is happening when a call comes in are they getting a busy signal? If so your line is shorted out.. unplug all phones and see if caller hears a ring.. Then 1 at a time plug phones in. Check for a dial tone and press a digit, hang up and check and see if dial tone returns, repeat this on all phones, until you get to the phone that does not give you dial tone back after dialing a digit. That will be your bad phone... If the line was ring busy after all phones unplugged, call repair service..

fast busy signal (plural fast busy signals)

1. (telephony) An audible signal on a voice phone line that sounds more frequently than a standard busy singal, indicating that notransmission path to the called phone number is available.

What Does Fast Busy Signal Mean on Cell Phone eHow

When you call an internal extension and the extension is either busy or ringing, you can invoke the Ring Again (Call Back) feature. If Ring Again is activated when the dialed extension is ringing, you will be notified when there is activity on the phone and the phone becomes idle. You cannot use this feature on outside lines, and while your phone is idle.

http://h10025.www1.hp.com/ewfrf/wc/documentSubCategory?tmp_rule=15720&tmp_task=solveCategory&lc=en&dlc=en&cc=us&lang=en&product=3752459

If the fax is on extension line, dial 9 or 0 before the number to get external line.

If your fax machine was working before this could be a line problem. Call your fax number with your cell phone or another phone. If you get a message phone the phone company or it just rings busy its probably a line problem. Another check is to plug your hand set into the wall outlet jack, you should hear the dial tone. If there is no dial tone its also a line problem. Or just try pluging your fax machine in at another location, if it works there you know its a line problem. If its still not working its going to be one of the boards inside the fax machine. Good luck.

You will need to know which line(s), and on which station(s) (extensions) you want each line to ring.

Programming is accomplished as follows:

Default Installer Password = INTERCOM *746
You can enable different ringing assignments for individual lines and stations.
You must program ringing assignments on a per station/per line basis. You can control ringing for every line that has appearance at a station assigning immediate, or direct, ringing to some lines and delayed ringing to others. NOTE: Do not program direct ringing for lines that you assign to the direct department calling feature.
To Program: 1. Dial 54. “STA/LINE CONFIG.”
2. Dial 1 “DIRECT RING”
—OR—
Dial 2. “DELAY RING”
NOTE: For no station ringing, skip step 3 and make no line selection.
3. Select line ports for ringing (LED On = Selected Ports).
—Line port 1–14 = Dial 01–14 or press A1–A14
—Line port 15, 16 = Dial 15, 16 or press B1, B2
—Line port 17–24 = Dial 17–24 or press HOLD then press A1–A8.
4. Dial # when all line ports are selected.
5. Select station ports (LED On = Feature Assigned)
—Station 10–57: Dial 10–57 or press C10–C57.
6. Dial * when all station ports are selected
—OR—
dial ** for next station/line ringing assignment
—OR—
dial ***for configuration mode.
To clear current setting, repeat procedure.

Use an LCD speakerphone and a DSS/BLF console at station port 11 or 13 to see which features are assigned to individual stations. While you can install any non-LCD digital telephone and use it for programming, visual feedback of the programming operations will not be available. You must always keep the handset of the LCD speakerphone on-hook while you use this telephone to program the system.

unplug everthing from all jacks in the house. call your # a couple of times. if the line rings, plug everything in 1 at a time, but call again after each hook up. if the line goes dead or is busy, that phone you just plugged in is the problem. [ a short in the phone, computer, answer machine, or any piece of equipment plugged into the phone line.] if the line is busy when everything is unplugged, call your phone company. there maybe a problem with your inside wire.there also maybe a box [called a nid] inside your basment/garage or on the side of your house, where you can plug your phone directly in, bypassing all the jacks in your house
hope this helps.
wg

try the manual

http://www.retrevo.com/s/panasonic%20KX-FL511%20manual