Defines the flashhook period (in msec) for both analog and IP sides. For the analog side it defines: - The maximal hook-flash detection period (for FXS gateways). A longer signal is considered offhook / onhook event. - The hook-flash generation period (for FXO gateways). For the IP side it defines the flash-hook period that is reported to IP. The valid range is 25 to 1500. The default value is 700 msec. Note: For FXO gateways, a constant of 90 msec must be added to the required hook-flash period. For example, to generate a 450 msec hook-flash, set �FlashHookPeriod� to 540. . Access: Instant. AC INI-Param: FLASHHOOKPERIOD