In the Cisco Jabber Video for Telepresence service, it is said that:
To invite others to use Jabber Video to join your telepresence meetings, you need:
• A standards-based TelePresence/video conferencing system
• A SIP video address
• The ability to make calls outside your firewall
So... do you have a SIP video address for the C20 system?
I suppose this SIP address is configured in the C20 administration web page. Anyway, we need this SIP address to be public, and I'm not sure about how to get this. Do I need the VCS help?
You, if you are the admin, decide what the address will be, and configure it on the admin webpage.
It must be in URI format though; e.g. email@example.com
You will also need to register the C20 with a SIP registrar, i.e. a VCS, and this address must be entered in the Proxy address setting.
I strongly sugges you take a look at the admin guide:
In the Jabber sign-in configuration, I can see that the internal server is "https://sjc1-movi-pr-bootproxy-vip.ciscojabbervideo.com/endpoint/configuration". I suppose this is the Cisco cloud VCS. Can I register the C20 in this VCS?
Can I make this VCS interact with mine?
No, you cannot register your C20 with that address - it is for the "free" version of JabberVideo only.
If you have your own VCS, then you need to register your C20 with the address of your own VCS, again; see the admin guide.
There is no need to do anything at all as far as "interacting" with the Cisco server is concerned.
Bear in mind you do need to have the appropriate SRV records in place in order for the C20 to receive URI type of calls.
I appreciate really much your help.
If the system is not registered in any VCS, can I try to make the call this way?
Yes, that will work for calls from JabberVideo to C20.
You will not be able to make calls from C20 to JabberVideo though.
You can subscribe your C20 to WTP service and it will have an @webex.com name-
That will allow to to make calls.