I have a client who currently has this setup:
1 CUCM 4.2(3)sr3 Publisher Server
1 CUCM 4.2(3)sr3 Subscriber Server
1 Unity Connection 1.2(1) Server
1 IPCC Server v 4.0SR01_Build029 -this server is for SQL queries for credit reports
2 2811 Routers with C2800NM-IPVOICEK9-M IOS, 12.4(8c) Release Software (fc3)
1 2801 Router with C2801-SPServicesK9-M IOS, 12.4(8c), Relase Software (fc3) -This is at a remote site.
I'm looking for advice on the best upgrade path specifically regarding the IPCC which is EOL/EOS. I have heard that the new version of Cisco's IPCC software is integrated, or an addon for Unity. Are there any feasible upgrade paths? Would the entire environment need to be upgraded? Is an upgrade even possible given the current (old) versions?
I have done CUCM installs but not upgrades/migrations and I have no experience with IPCC. Any thoughts or advice would be much appreciated.