Cisco Unified Communications is ranked 4th in Unified Communications while Oracle Communications Unified Communications is ranked 21st in Unified Communications. Cisco Unified Communications is rated 9.0, while Oracle Communications Unified Communications is rated 0.0. The top reviewer of Cisco Unified Communications writes "I find the ability to block incoming calls based on the originating number to be the best feature, but the reporting system needs to be more in-depth". On the other hand, Cisco Unified Communications is most compared with Fortinet FortiVoice, Cisco Jabber, Digium Asterisk, Skype for Business and Siemens OpenScape, whereas Oracle Communications Unified Communications is most compared with Kamailio SIP Server.
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