User`s manual

Version 5.4 95 May 2008
SIP User's Manual 3. Web-Based Management
Table 3-20: Hook-Flash Settings Parameters
Parameter Description
Min. Flash-Hook Detection Period
[msec]
[MinFlashHookTime]
Defines the minimum time (in msec) for detection of a hook-flash
event.
The valid range is 25 to 300. The default value is 300.
Detection is guaranteed for hook-flash periods of at least 60 msec
(when setting the minimum time to 25). Hook-flash signals that
last a shorter period of time are ignored.
Notes:
 This parameter is applicable only to FXS interfaces.
 It's recommended to reduce the detection time by 50 msec
from the desired value (e.g., if you want to set the value to 200
msec, then enter 150 msec (i.e., 200 minus 50).
Max. Flash-Hook Detection Period
[msec]
[FlashHookPeriod]
Defines the hook-flash period (in msec) for both analog and IP
sides. For the IP side, it defines the hook-flash period that is
reported to the IP.
For the analog side, it defines the following:
 FXS interfaces: Maximum hook-flash detection period. A
longer signal is considered an off-hook or on-hook event.
 FXS interfaces: Hook-flash generation period upon detection o
f
a SIP INFO message containing a hook-flash signal.
 FXO interfaces: Hook-flash generation period.
The valid range is 25 to 3,000. The default value is 700.
Note: For FXO interfaces, a constant of 100 msec must be added
to the required hook-flash period. For example, to generate a 450
msec hook-flash, set this parameter to 550.