Version 6.2 425 February 2011
SIP User's Manual 10. Configuration Parameters Reference
Parameter Description
Web: Max. Flash-Hook Detection Period
[msec]
EMS: Flash Hook Period
[FlashHookPeriod]
Defines the hook-flash period (in msec) for both Tel and
IP sides (per device). 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:
9 Maximum hook-flash detection period. A longer
signal is considered an off-hook or on-hook event.
9 Hook-flash generation period upon detection of 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.
Notes:
For this parameter to take effect, you need to reset the
device.
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.
This parameter can also be configured per Tel Profile,
using the TelProfile parameter.
DTMF Parameters
EMS: Use End of DTMF
[MGCPDTMFDetectionPoint]
Defines when the detection of DTMF events is notified.
[0] = DTMF event is reported at the end of a detected
DTMF digit.
[1] = DTMF event is reported at the start of a detected
DTMF digit (default).
Web: Declare RFC 2833 in SDP
EMS: Rx DTMF Option
[RxDTMFOption]
Defines the supported receive DTMF negotiation method.
[0] No = Don't declare RFC 2833 telephony-event
parameter in SDP.
[3] Yes = Declare RFC 2833 telephony-event
parameter in SDP (default).
The device is always receptive to RFC 2833 DTMF relay
packets. Therefore, it is always correct to include the
'telephony-event' parameter as default in the SDP.
However, some devices use the absence of the
'telephony-event' in the SDP to decide to send DTMF
digits in-band using G.711 coder. If this is the case, you
can set this parameter to 0.
Note: This parameter can also be configured per IP
Profile, using the IPProfile parameter (see ''Configuring IP
Profiles'' on page 122).
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