That's the error code I get when I call. No ringing, no voicemails, just errors.
My husband is traveling to a new job orientation in Atlanta without a cell phone (due to switching firms) so his parents gave him one of their spare lines on a LG 8600. It has signal and isn't set to home only or anything. It is very strange and annoying. I could see weird issues like this in 2001, but not in 2012. Outgoing calls work fine.
To make matters stranger, it sounds like an old Cingular error code.
It was a blast from the past to call the hotel and ask for the room in order to actually talk!
Verizon Wireless: 2001-2004 & 2011-2013
Cingular/AT&T: 2004-2006 & 2008-2009 & 2013-Present
Sprint: 2006-2007 & 2009-2011