Voicemail cut off


I have a UCM6100 with GS2170 phones. Since the last update, all of the sudden I noticed that all after hour voicemails get cut off. So I called the # from my cell and I noticed that after 33 seconds the call gets disconnected regardless of whether you just listen to the IVR or leaving a voicemail. If you spend listening to the office hours/direction for 25 seconds, that will only leave you 5 seconds to leave a voicemail.
Does anyone know what is going on?! I would appreciate any help.


Does is also now do that on a normal call?


Check through your NAT settings.