Digium Switchvox is ranked 15th in Unified Communications while Siemens OpenScape is ranked 10th in Unified Communications. Digium Switchvox is rated 9.0, while Siemens OpenScape is rated 0.0. The top reviewer of Digium Switchvox writes "Integrated chat system enables you to send a quick message to a work colleague without calling the person". On the other hand, Digium Switchvox is most compared with , whereas Siemens OpenScape is most compared with Cisco Unified Communications.
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