Customer-X has the entire UC 10.x infrastructure based out of HQ.
There is a Remote site with 500 users
80% of the entire workforce including users at Remote Site are provisioned with SoftClient: Jabber for Windows 10.x version (SoftPhone mode)
I understand Scenario-I. However, not sure about Scenario-2.Please share your inputs on Scenario2 and if possible with Call Flow:
Scenario-I: When the IP connectivity between HQ & Remote Site goes down
Remote Site users with Jabber Windows Client10.x can connect to CUCM through internet via VCS C/E or Exp-C/E and Authentication takes place using UDS.
Scenario-2: When CUCM/LDAP is not accessible, how will the Users at Remote Site with Jabber Windows10.x Client (SoftPhone mode) login and get provisioned?
Like to know if the below understanding is correct. If not, please share your inputs on the correct recommendation:
Jabber Windows Client10.x which is in SoftPhone mode gets into DeskPhone mode when CUCM/LDAP/UDS is down and only voice call would be supported.
The Jabber windows client10.x that are already logged in remain logged in but the new Jabber Windows client 10.x client will not be able to login when CUCM/UDS is down since authentication is not possible.
Need to use E-SRST concept wherein the SRST Manager will be installed as a separate Virtual Machine in HQ. It will take the configuration from CUCM and do auto synchronization with Voice Gateway running CME in SRST mode at Remote Site. So, when the CUCM goes down or IP WAN is down, the Jabber Windows Client 10.x will get the required configuration but how will the authentication takes place even in this scenario.?
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