an off-hook signal will repeat after a/an................... duration.?

Question

option given are:
-finite
-infinite
-duration of 40 sec
-duration of 80 sec
plz let me know??

Answer 1

what do u want to ask do u know??

Answer 2

That is a vague question. If you are referring to leaving a telephone receiver off hook, you will get the beeping tone in around 30 seconds. If you don't hang it up the ESS machine will put your line on a temporary out of service list to keep from tying up computer resources.

Ron