Configuring Hook Flash
                                            The following procedure describes how to configure various hook-flash features.
                                            
                                                
                                                
                                                
                                                
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                                                    To configure hook-flash features: | 
                                                
                                            
                                            
                                                
                                                
                                                
                                                
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                                                    1.
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                                                    Configure the digit pattern used by the Tel side to indicate a hook-flash event: | 
                                                
                                            
                                            
                                                
                                                
                                                
                                                
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                                                    a.
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                                                    Open the Supplementary Services Settings page (Setup menu > Signaling & Media tab > Gateway folder > DTMF & Supplementary > Supplementary Services Settings). | 
                                                
                                            
                                            
                                                
                                                
                                                
                                                
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                                                    b.
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                                                    In the 'Hook-Flash Code' (HookFlashCode) field, enter the digit pattern. | 
                                                
                                            
                                            
                                                
                                            
                                            
                                            
                                                
                                                
                                                
                                                
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                                                    2.
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                                                    Configure the hook-flash transport type: | 
                                                
                                            
                                            
                                                
                                                
                                                
                                                
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                                                    a.
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                                                    Open the DTMF & Dialing page (Setup menu > Signaling & Media tab > Gateway folder > DTMF & Supplementary > DTMF & Dialing). | 
                                                
                                            
                                            
                                                
                                                
                                                
                                                
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                                                    b.
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                                                    From the 'Hook-Flash Option' (HookFlashOption) drop-down list, select the required transport type. | 
                                                
                                            
                                            
                                                
                                            
                                            
                                            
                                                
                                                
                                                
                                                
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                                                    3.
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                                                    To configure the period by the device for detecting hook-flash initiated by analog interfaces:
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                                                    a.
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                                                    Open the Analog Settings page (Setup menu > Signaling & Media tab > Gateway folder > Analog Gateway > Analog Settings).
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                                                    b.
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                                                    Configure the following:
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                                                    'Min. Hook-Flash Detection Period' (MinFlashHookTime): Defines the minimum time (in msec) for detection of a hook-flash event from an FXS interface. Detection is guaranteed for hook-flash periods of at least 60 msec (when configuring the period to 25). The device ignores hook-flash signals lasting a shorter period of time.
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                                                    'Max. Flash-Hook Detection Period' (FlashHookPeriod): 	Defines the maximum hook-flash period (in msec) for Tel and IP sides for FXS and FXO interfaces. For more information, see the Tel Profile parameter 'Flash Hook Period'
in Configuring Tel Profile.
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