I need to explain to my customer interoperability between CUCM and Apple iPhone, Nokia E52, SIP Third-party device ...
I configured "Dual-mode phone for iPhone" device in my CUCM company, and it works very well!
I installed a new DEMO CUCM, but "Dual-mode phone for iPhone" device doesn't work! When I try to connect my iPhone to new DEMO CUCM, device gives me this error: "Failed to register with the supplied information".
In the new DEMO CUCM, i have only configure Device Pool, Partition, CSS ... below, in attach, you can find my "Dual-mode phone for iPhone" device on new DEMO CUCM configuration.