Sounds like a power problem.
This model of phone will work as a regular corded phone when no ac power is available.
IE the cordless function is only available when you have electricity.
- is the ac adapter plugged into a working outlet.
- is the ac adapter working.
- is the ac adapter pluged into the base.
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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.
You could plug your non-cordless phone into suspicious phone jack to see if you have dial tone-if you dont have dial tone, the line maynot be connected and you should open the jack to see if there is more than 1 cable attached. If there is more than 1 cable attached and you dont have dial tone at other end of cable the cable might be cut or shorted somewhere inbetween. You can test continuity by tying 2 wires together and test with a multimeter on resistance to see if it is open circuit or maybe even short circuit. To test for short circuit, untie the cables and you should not get a reading. If you do have dial tone when you plug in non-cordless phone the distance might be to far for receiver to pick it up(ie..greater than 10 metres). I hope this has been helpful.
Check that you have power (eg. Led indicator is on) to your Base station.
If you have power to the base station and you still do not have a dial tone, plug in a non-cordless handset to the phone socket and see if you have a dial tone on yor non-cordless handset, then you have a faulty base station.
Hope it helps and good luck! let me know how you go!
Panasonic KX-TG1050N Cordless Phone. Base handset (No. 1, KX-TGA100N) does not work, no keypad response or dial tone. Green indicator message light ON (should only work with the TG1000N base unit) all the time till battery runs down. Display shows message ?C533?. Can still send and receive calls on extension phones 2 and 3.
Per the instruction manual, there is supposed to be a switch on the base (look on the back or bottom) for TONE/PULSE mode.
Here is a link to the manual:
In the "troubleshooting" section, there is this entry:
Dial tone is OK, but can?t dial out:
Make sure the TONE/PULSE setting on the base is set to the type of phone service you are subscribed to.