The first version of Kerio Operator was released in 2011. Reviews of the product have noted its configuration, management, and lean hardware requirements. <ref>https://community.spiceworks.com/products/56630-kerio-operator</ref><ref>http://uk.pcmag.com/kerio-operator-1210/6135/review/kerio-operator-1210</ref><ref>https://www.testseek.com/computers/networking/switch/ap/bridge/kerio-operator-box-v300-p-2e10bbca-7df9-2912-fa53-b41eeb2957e0.html</ref><ref>http://www.channelpartner.de/a/voip-loesung-fuer-den-it-channel,299250</ref><ref>http://www.itpro.co.uk/networking/26877/kerio-operator-box-v300-review</ref>
Kerio Operator supports a big variety of VoIP phones, likeincluding [[Snom]], [[Grandstream]], Polycomand etc[[Polycom]].<ref>http://www.channelpronetwork.com/article/kerio_operator_and_snom_technology_ag_announce_interoperability</ref>
SinceAs of version 2.4, Kerio Operator is capable of providing video calling functionality with supported hardware phones.
SinceIn version 2.5, video/voice calls can be established via the Kerio Operator Client web interface or Kerio Operator softphone app for desktop (macOS, Windows) or mobile devices (iOS, Android).
