Why do I have no line on one telephone set?

First, confirm that the modem is online and if you also have internet service on the same modem, try accessing the internet from your computer to confirm modem’s accessibility.

Secondly, follow the below instructions:

If the telephone set you have connected to the modem is a cordless phone:

  • Check that the cordless base is switched on and that the cordless phone is fully charged
  • Check that the cordless phone is within the range of the cordless base

If the problem on your cordless phone persists or you have a normal telephone set connected to the modem, follow the below instructions:

  • Check that the telephone wire is connected properly between the modem on the TEL 1 port and the telephone set.
Tel 1 port
  • Try to call your telephone number from your mobile or a different number and confirm if there is a ringing tone or not
  • If there is a ringing tone, it means that the line is working fine but it’s not reaching your telephone set. If applicable, eliminate or replace the splitter or adapter you have connected with the TEL 1 port on the modem and check your line. Otherwise, replace your telephone set and check your line again.
  • If there is no ringing tone, disconnect the wire from the TEL 1 port on the modem and try to call your telephone number from your mobile or a different number again, and confirm if now there is a ringing tone or not.
  • If now there is a ringing tone, if applicable, eliminate or replace the splitter or adapter you have connected with the TEL 1 port on the modem. Otherwise, replace your telephone set and check your line again.