Hi all,
I replaced an old 2811 Gateway with IPSEC, IP-INSPECT, PBR, and H323 ISDN gatewa with a new 4431-VSEC with a 4 Port ISDN NIM-4BRI-NT/TE.
So I decided to to with IOS XE 3.16 since the nim is supported since 3.14 according to http://www.cisco...