Dear all,
We're kind of a partner with Cisco in China. Our SIP clients in the Intranet can register to CUCM and make calls to each other. Now, we intend to let our SIP clients in the Internet register to CUCM. As far as we know, Cisco expressway-edge and expressway-core are required for Cisco devices to register to CUCM. However, we wonder whether third-party SIP clients in the Internet can register to CUCM via expressway-core and expressway-edge? After googling, we could not find a clear answer to this question. Any comment is greatly appreciated.
Best regards,
Chen-Che
