Version 5.8 397 October 2009
SIP User's Manual 6. Configuration Parameters Reference
Parameter Description
[TimeToSampleAnalogLineVolta
ge]
Determines the frequency at which the analog line voltage is
sampled (after offhook), for detection of the current disconnect
threshold.
The valid range is 100 to 2500 msec. The default value is 1000
msec.
Notes:
 This parameter is applicable only to FXO interfaces.
 For this parameter to take effect, a device reset is required.
6.12 Tone Parameters
This subsection describes the device's tone parameters.
6.12.1 Telephony Tone Parameters
The telephony tone parameters are described in the table below.
Table 6-45: Tone Parameters
Parameter Description
Web/EMS: Dial Tone Duration
[sec]
[TimeForDialTone]
Duration (in seconds) that the dial tone is played.
FXS interfaces play the dial tone after the phone is picked up (off-
hook). FXO interfaces play the dial tone after the port is seized in
response to ringing (from PBX/PSTN).
The valid range is 0 to 60. The default time is 16.
Notes:
 During play of dial tone, the device waits for DTMF digits.
 This parameter is not applicable when Automatic Dialing is
enabled.
Web/EMS: Stutter Tone
Duration
[StutterToneDuration]
Duration (in msec) of the Confirmation tone. A Stutter tone is
played (instead of a regular dial tone) when Call Forward is
enabled on the specific port or when a Message Waiting Indication
(MWI) is received. The Stutter tone is composed of a Confirmation
tone (Tone Type 8), which is played for the defined duration
(StutterToneDuration), followed by a Stutter Dial tone (Tone Type
15). Both these tones are defined in the CPT file.
The range is 1,000 to 60,000. The default is 2,000 (i.e., 2 seconds).
Notes:
 This parameter is applicable only to FXS interfaces.
 If you want to configure the duration of the Confirmation tone to
longer than 16 seconds, you must increase the value of the
parameter TimeForDialTone accordingly.
 The MWI tone takes precedence over the Call Forwarding
Reminder tone. For detailed information on MWI, refer to
Message Waiting Indication on page 521.
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