Editing VoIP spam (section)

== Implementation of mitigation==
Little information is available about implementations of SPIT mitigation measures by [[Telephone company|telephone companies]]. Some recent smartphone vendors are incorporating notification of possible spam for incoming calls, such as [[Google]] in its [[Google Nexus|Nexus]] [[Android (operating system)|Android]] devices<ref>{{Cite web|url=https://support.google.com/nexus/answer/3459196|title=Use caller ID & spam protection - Nexus Help|website=support.google.com|language=en|access-date=2017-01-22}}</ref> and [[Apple Inc.|Apple]] in its [[iOS 10]] release.<ref>{{Cite web|url=http://www.idownloadblog.com/2016/06/13/ios-10s-phone-app-gains-voicemail-transcriptions-spam-alerts-voip-support/|title=iOS 10's Phone app gains Voicemail Transcriptions, Spam Alerts, VoIP support|date=13 June 2016 |access-date=2016-09-08}}</ref> SPIT is generally not yet considered to be a problem as critical as [[email spam]]. 
An automated analysis of the call signaling flow can help to discover SPIT. Commercial VoIP software for communication service providers may include a behavioral analysis, e.g. [http://www.iptego.com Acme Packet Palladion]. Relevant parameters and indications of SPIT are, for example, a high call attempt frequency, concurrent calls, low call completion and low call duration average.