For more information on Cisco IP Communicator 4.3, please visit the Cisco website or contact a Cisco representative. You can also check out the following resources:
Despite being legacy software, many organizations still use it due to its unique "hard-phone" interface that mimics a physical Cisco 7900 series IP phone. Cisco IP Communicator EOL cisco ip communicator latest version
This is the primary successor for cloud and hybrid environments. For more information on Cisco IP Communicator 4