Fortinet FortiFone is ranked 14th in IP Telephony & Unified Communications while Siemens OpenScape is ranked 6th in IP Telephony & Unified Communications. Fortinet FortiFone is rated 0.0, while Siemens OpenScape is rated 0.0. On the other hand, Fortinet FortiFone is most compared with , whereas Siemens OpenScape is most compared with Cisco Unified Communications.
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