Do TDM4xx cards answer the phone or watch the ring signal?

Don’t know if I’ve explained this right. What I do not want, is the TDM card answering the phone unless someone picks up a phone. Otherwise the caller will be charged with a call even tho nobody answers the phone and it goes to voicemail.

Try this explanation: Is there a way to get the TDM card to simply “watch” the line, ring the SIP phones while it “sees” a ring signal, but ONLY pick up the line when a user answers an extension OR it times out and goes to voicemail?

  • Gary