I currently have a UC560 running in a small business environment. My problem is this:
Incomming phone calls into the company have no issue establishing the call and ending the call once the phone is hung up on either end. The issue occurs when a person from the outside calls in and leaves a voice message on the CUE. When the caller hangs up it appears that the FXO port on the UC500 does not release the line for upwards of 30 seconds. This results in 30 seconds of dead air at the end of each message. The only workaround the staff has currently is to fast forward each message to get back to the automated voicemail navigation menu. I've tried several settings on the FXO interface with no success. I have attached a sample of what the voicemail sounds like.
If anyone has any suggestions or fixes it would be a huge help.