n Ensure all your endpoints, both H.323 and SIP, register with an alias in the form name@domain.
n Create a pre-search transform on the VCS that strips the @domain portion of the alias for those URIs that
are in the form of number@domain.
See the pre-search transforms section for information about how to configure pre-search transforms, and
the stripping @domain for dialing to H.323 numbers section for an example of how to do this.
Cisco VCS Administrator Guide (X8.1.1) Page 91 of 507
Protocols
Configuring SIP and H.323 interworking