Our old single handset would pick up voicemail from Exede, but we couldn't get to the phone to answer it in the 4 rings. I bought new Panasonic phone with 3 handsets and answering system. I need to ask exede to make it ring about 10 times before going to voicemail. I will, but if I try to get the "Voicemail msg via phone co." it only goes to the part where we can leave a voicemail-not to where we can retrieve and listen to the vm. How do I listen to the vm on this new system?