question

Hello - my employee is having difficulty dialing. When the number to be called is entered and the Call button is pressed, the phone rings and the system asks me to press 1 if I want the call connected.  That has always worked in the past and was working this morning until I was making a call as usual and pressed 1 but the call didnt go through.  Instead, the system kept asking me to press 1.  Repeated tries didnt get me out of the loop it appears to be experiencing.  I tried another number, no joy.  I logged out of the application and re-entered the URL, logged in, and tried again, still no joy.