DVG-5004S User’s Manual VoIP Gateway ConfigurationD-Link Systems, Inc. 36General Settings→ Line settingsRing (Early Media) Time Limit[10 - 600secs]: Enter the timeout to cancel a call if no one answers thephone.Enable End of Digit Tone: Check the box to activate the function of playing a “Beep-Beep” tone to notifythe user that the call is in progress.Early Media Treatment: Check the box to send the one-way RTP immediately when a connection with aVoIP service provider has been set up.Loop Current Drop Trigger Time: Enter the time to avoid the line being engaged when FXS port isconnected to PBX. It stops the loop current from FXS port when FXS port is playing busy tone. The setting“0” zero is to disable this function.Loop Current Drop Duration: Enter the drop duration for loop current.ROH Begin Time: As users forget hang up phone set it makes FXS play loud Howler Tone to notify usersput hand set correctly. If this timer is set to be 20 seconds, that FXS play busy tone for 20 seconds thenplay ROH.ROH Duration: It is the maximum time for FXS play ROH, then FXS will stop play ROH and keep silence.FXS Ring Voltage: It is to set the Ring Voltage of FXS.FXS Onhook Voltage: It is to set the idle Voltage of FXS.VoIP Centrex Extension Digit Count: This feature is to enable and set the digit count of VoIP Centrex.The setting “0” zero is to disable this function.VoIP Centrex Digit: Enter the digit for VoIP call. If you dial VoIP Centrex Digit first, the dialing plan isaccording to the Digit Map; otherwise the VoIP Gateway will send the number which digit count is the sameas VoIP Centrex Extension Digit Count.Metering Pulse Type/ Metering Pulse Period: It is used for telephony device which connected to FXSport for billing purpose. DVG-5004S provide 14k Hz and 16k Hz metering capacity. The fully supportfor detail Metering Pulse Period is not free charge, please contact with your vendor.