Version 6.2 473 February 2011
SIP User's Manual 10. Configuration Parameters Reference
Parameter Description
Web: Rings before
Detecting Caller ID
EMS: Rings Before Caller
ID
[RingsBeforeCallerID]
Determines the number of rings before the device starts detecting
Caller ID.
 [0] 0 = Before first ring.
 [1] 1 = After first ring (default).
 [2] 2 = After second ring.
Note: This parameter is applicable only to FXO interfaces.
Web/EMS: Guard Time
Between Calls
[GuardTimeBetweenCalls]
Defines the time interval (in seconds) after a call has ended and a new
call can be accepted for IP-to-Tel (FXO) calls.
The valid range is 0 to 10. The default value is 1.
Notes:
 Occasionally, after a call ends and on-hook is applied, a delay is
required before placing a new call (and performing off-hook). This is
necessary to prevent incorrect hook-flash detection or other glare
phenomena.
 This parameter is applicable only to FXO interfaces.
10.12.10 FXS Parameters
The general FXS parameters are described in the table below.
Table 10-58: General FXS Parameters
Parameter Description
Web: FXS Coefficient Type
EMS: Country Coefficients
[FXSCountryCoefficients]
Determines the FXS line characteristics (AC and DC) according to USA
or Europe (TBR21) standards.
 [66] Europe = TBR21
 [70] USA = United States (default)
Note: For this parameter to take effect, a device reset is required.
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