I've 2 2830's they've been connected for a few days, but for reasons unknown to me they're failing to connect
I've check the IP at each end , these are both still static.

on the dial in end , in the syslog i'm seeing

NAT GRE session 49924 time out, las time = 570040 ...
on the dialling end im seeing
[L2L][DOWN][PPTP][@1:Branch]
2013-05-31 13:55:20 PPP Drop VPN : Dial-out Profile Index = 1, Name = Branch

any help would be much appreciated

Thanks