Specifications

Real Tone Technology Co., Lted www.realtonetech.com
Page 49/67
Title Explanation
Register upon
INVITE timeout
Set whether to activate registration when SIP message of INVITE is
failed or time expired, and by default, re-registration is not selected.
2.6.4 Characteristics of subscriber line
After login, click the label of “Advanced > line” to open this interface.
Figure 2-15 Subscriber-line characteristics configuration interface
Table 2-19 Subscriber-line characteristics configuration parameter
Title Explanation
Gain to IP Set the voice volume gain towarding IP side, the default is 0. Taking
decibel as the unit, setting range is -3 ~ +3 decibels. -3 means declining
of 3 decibels; +3 denotes the amplification of 3 decibels.
Gain to terminal Set the voice volume gain towarding FXS port side, the default is -3.
Taking decibel as the unit, setting range is -6 ~ +3 decibels. -3 means
declining of 3 decibels; +3 denotes the amplification of 3 decibels.
Impedance Select the parameter of FXS port line impedance, and the default value is
600 ohm. The optional values as below:
l Complex
l 600（ohm）
l 900（ohm）
Min.hookflash
Used by gateway to detect Hook Flash event, the default is 75
milliseconds. The gateway will ignore any flash that fall short of the
shortest flash time. Generally, this value should not be less than 75
milliseconds.
Max.hookflash Used by gateway to detect hook flash, the default is 800 milliseconds.
The gateway will regard the flash duration between “Min.hookflash” and
“Max.hookflash” as effective flash. Any flash lasting over the longest
time will be considered by gateway as hang up. Generally, this value
should not be less than 800 milliseconds.