I have made the circuit at the link below.
Its the first one in the list "Telephone in use indicator"
It works fine accept that when there is no one on the phone the LED glows a little. (On hook I think they call it)
What can I do to stop it from glowing and using up the battery. I tried to put a 500 ohm resister just after the LED between the LED and positive eg LED ----+ . This did not change anything. Also is it right that when the circuit is not connected to the phone system but the battery installed that the LED blinks. It stops blinking when I hook it up to the phone system (it just glows a little)