Aastra MX-One is ranked 12th in Unified Communications while Siemens OpenScape is ranked 10th in Unified Communications. Aastra MX-One is rated 0.0, while Siemens OpenScape is rated 0.0. On the other hand, Aastra MX-One is most compared with , whereas Siemens OpenScape is most compared with Cisco Unified Communications.
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