Causes the FaxMan Jr. control to listen for incoming calls.
Public Sub Listen()
When you call this method, FaxMan Jr. will spawn a separate thread that will monitor the comm port. When a ring is detected on the line, FaxMan Jr. will notify your application through the Ring event. Depending on the value your application returns from the Ring event, you can cause FaxMan Jr. to:
answer the phone and attempt to receive a fax,
stop listening for rings and do nothing else
keep listening for rings