We are running Intuity 5.1 Audix System. We have 13 locations using this system. At one location, we periodically receive garbled voicemail messages. The messages are incoming calls from various mediums (cell phones, landlines, etc.),but always coming in from outside, never happens with inside voicemails. They sound like an answering machines going bad. The message is garbled or starts out fast then slows or over records previous words in the same message. We have repunched connections, moved lines to different ports, replaced phones and still can't seem to correct the problem. The other locations on the same system work perfectly. Any ideas would be greatly appreciated.