I'm facing an issue with registering jabber video to the VCS-C please note that i have three option keys installed on the VCS 1- 10 non traversal calls 2- 100 traversal calls 3- sip to h.323 interworking on the TMS i have provisioning extension of 10 active clients/systems my question is where do i need to create accounts and credentials to use them to log in to jabber client also do i need to install an option key for provisioning on the VCS-C , i have only one VCS-c in the jabber client sign in settings what should i use in external and internal servers is it going to be the same VCS ?