Or maybe you'd like to have 2 IP addresses to receive the call via H.323? if this is the question, based on my knowledge, the answer is NO.
H.323 is binded to one interface only: calls can flow via any interface but destination is always the same. you even have the power to force the ip address signaling gateway using the bind address command. please check the following link:
http://www.cisco.com/en/US/docs/ios/12_1t/12_1t2/feature/guide/dt323bnd.html
regards,
Daniel