A customer wants to set up two IP500v2 Office control units at different sites. They want to automatically exchange Information about users and extensions, allowing remote users to be called without…

A customer wants to set up two IP500v2 Office control units at different sites. They want to automatically exchange Information about users and extensions, allowing remote users to be called without any additional configuration on the local IP Office. Which H.323 supplementary service signaling method do you implement?