Conditional Call Extending used to administer up to six different independent settings, controls which type of calls to extend when EC500 is enabled. You can administer the Conditional Call Extending settings and apply these settings to a specific application instead of the station as a whole. In addition to the administrator, the user can also set the Conditional Call Extending settings. Conditional Call Extending feature is used by FMC applications such as PBFMC, PVFMC, and SPFMC. This feature is not supported for PVFMC application when administered as a dual mode pair (DMX) with a ONE-X application. Conditional Call Extending feature is also not supported for OPS application.