rtp direct from phone

hi all,

im setting up a brand new 1100 at a remote site that has a bunch of phones registered to a centralized PBX in the cloud.

The SBC's int that will be registered to the PBX is on the same network as the phones.

What I would like to when a phone sends an invite to the PBX, the PBX will signal the SBC but would like to have the RTP since both ends are local to go from phone to SBC and viceversa. signaling would be through PBX of course, but RTP between SBC and Phone.I remember in my course that we spoke about this but this is vag.