186 3Com® VCX V7111 VoIP Gateway User Guideini File Parameter Name Valid Range and DescriptionTxDTMFHangOverTime Defines the Voice Silence time (in msec units) after detecting the end ofDTMF or MF digits at the Tel / PSTN side when the DTMF Transport Typeis either Relay or Mute.The Valid range is 0 to 2,000 msec. The default is 100 msec.RxDTMFHangOverTime Defines the Voice Silence time (in msec) after playing DTMF or MF digitsto the Tel / PSTN side that arrive as Relay from the IP side.The valid range is 0 to 2,000 msec. The default is 1,000 msec.Restoring and Backing up the Gateway ConfigurationThe Configuration File screen enables you to restore (load a new ini file to the gateway) or toback up (make a copy of the VoIP gateway ini file and store it in a directory on yourcomputer) the current configuration the gateway is using.Back up your configuration if you want to protect your VoIP gateway programming. Thebackup ini file includes only those parameters that were modified and contain other thandefault values.Restore your configuration if the VoIP gateway has been replaced or has lost itsprogramming information, you can restore the VoIP gateway configuration from a previousbackup or from a newly created ini file. To restore the VoIP gateway configuration from aprevious backup you must have a backup of the VoIP gateway information stored on yourcomputer.To restore or back up the ini file: Open the Configuration File screen (Advanced Configuration menu > Configuration File);the Configuration File screen is displayed.Figure 66 Configuration File Screen
