I have to sites with a VPN tunnel between them and VOIP trunk licenses on both systems. Site A has 200 and 300 series extension numbers and site B has 400 series extension numbers. To do three digit dialing between the two what do I have to do? Program a Desti code of 4 and any in site A and a Desti code of 2 and 3 and any in site B? I know the VOIP trunks are in Bloc C. What about target lines?