Hi Michael, The VG224 can be configured as H.323, MGCP and SCCP gateway. Depending on the protocol, the configuration will be a little bit different. H.323: You have to configure the POTS dial peer and VOIP dial-peer MGCP: You will need to configure the MGCP, but you will also going to need to have the CUCM in order to control the VG224 ports SCCP: You will need to configure the SCCP, but you will also going to need to have the CUCM in order to control the VG224 ports Please, let me know what kind of protocol are you planning to use, I may be able to send an configuration example. Thanks, Marcos