Aastra 5000 is ranked 18th in Unified Communications while Digium Asterisk is ranked 3rd in Unified Communications. Aastra 5000 is rated 0.0, while Digium Asterisk is rated 8.0. On the other hand, the top reviewer of Digium Asterisk writes "Call recording, call logging, and the stability are pivotal features for our clients". Aastra 5000 is most compared with , whereas Digium Asterisk is most compared with Kamailio SIP Server, Fortinet FortiVoice, 3CX Live Chat, Cisco Unified Communications and Mitel Application Suite.
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