Hello guys,
I'm trying to register with CUCM 11 from external netwrok using public IP , but the CUCM do not accept the registeration as it has another IP
Details:
CUCM IP is A.A.A.2/24
External IP is B.B.B.1
Phone IP is C.C.C.2
As in this Figure
![CUCM.jpg CUCM.jpg](https://community.cisco.com/t5/image/serverpage/image-id/29274iB5C6057E0C28A6D0/image-size/large?v=v2&px=999)
So there no problem with conncetivity between Iphone and CUCM Server, Both an Ping each other as there is a port forwarding rule on Generic Router 2 to forward all traffic that's comming at IP B.B.B.1 to A.A.A.2
the problem is that CUCM does not accept registration using External IP B.B.B.1
so is there any solution for this
Note the This connectivity design can not be changed so I need a solution that make CUCM accept and recognize registration from external IP Phones
Thanks in advance