I have deployed Expressway C and E in my lab to try Jabber without VPN from internet. I can successfully login from internet. The problem is when I make a call to the client which is registered directly to CUCM, jabber is ringing, but I can't hear sound from both clients (using Jabber windows 9.7 for calling and called parties). My Expressway E deployment is using one leg with static NAT. I have open firewall from inside to public IP Expressway E and vice versa.
Also if I call from inside to Jabber Expressway, It will fail with service unavailable.error message from call history in Expresswawy C.
My topology looks like this:.
internet <--> firewall (apply static NAT to Expressway E) <---> Router <--> switch --- UCS server (Expressway C and E in same subnet)
When configuring the traversal zone, make sure you put in a DNS name that resolves to the public IP not the NATed IP.
I'm changing my topology so that my VCS-E use dual network interface with static NAT and it works. I can't configure NAT reflection on my firewall, that's why I decide to change my topology
Thanks for your reply. I'm trying to do that change too, although in this new scenario I'm facing connectivity problems ... let's see if eventually I can make it work
I want to enable Cisco Jabber as well without VPN but really facing a lot of difficulties to do that
Could you please tell me the easy way to do implementation and tested with minimum configurations
Thanks in advance