FortiVoice FON-870i phone system compatiblity Last Updated: 06/24/2015
The FortiVoice FON-870ibase stations are only supported on VSX or FVC systems that are on firmware versions of 7.31.003 or later.
FON-870ibase stations are NOT compatible with the TalkSwitch VS series phone systems, since they are only compatible with the 7.11.xxx firmware release.