This article describes the issues resolved in Switchvox version 6.6.0.4 (90937).
See also: Known Issues, 6.5.2, 6.6.0.1, 6.6.0.2, 6.6.0.3, 6.7.
...
Phone-user call rule action Forward now correctly blocks the use of one's own additional phone extension.
Switchvox now accepts a preceding plus sign (+) when a phone-user clicks-to-dial a phone number that is presented in the international format. Version 3.0.2 of Switchvox Dial is also required.
Digium Phone Firmware 1.6.4 (D80) and 2.4.1 (other models).