Hook Flash (ms)

Parameter group

Signaling Type

Access level


Possible values

Integer multiples of 20, in the range 0 through 5100




Specifies the duration of the hook flash (on-hook) signal that Blueworx Voice Response sends to the switch to call a feature (such as call transfer).

Set this value as specified by the switch vendor, otherwise the signal might be ignored (if too short) or interpreted as an on-hook signal (if too long). For example, for the ROLM 9751 switch, this value is normally set to 300 for the E&M signaling protocol and to 500 for the FXS Loop Start protocol.