2264 CHAPTER 131: VOICE SUBSCRIBER L INE CONFIGURATIONConfiguring ComfortNoise FunctionYou can use the cng-on command to generate some comfortable backgroundnoise to replace the toneless intervals during a conversation. If no comfortablenoise is generated, the toneless intervals will make both parties in conversationfeel uncomfortable.Follow these steps to configure the comfort noise function:Enter voice subscriber lineviewsubscriber-lineline-number-Configure the intervalbetween off-hook and dialingthe first digittimer first-dial seconds Optional10 seconds by default.Applicable only in FXO/FXS voicesubscriber line view.Configure the maximuminterval for dialing the nextdigittimer dial-intervalsecondsOptional10 seconds by default.Configure the maximumduration of playing ringbacktonestimer ring-back seconds Optional60 seconds by default.Configure a dial delay delay start-dial seconds Optional1 second by default.Applicable only in FXO/FXS voicesubscriber line view.Configure the maximumduration the system waits fora digittimer wait-digit{ seconds | infinity }Optional5 seconds by default.Applicable only in E&M voicesubscriber line view.To do... Use the command... RemarksTo do... Use the command... RemarksEnter system view system-view -Enter voice view voice-setup -Enter voice subscriber lineviewsubscriber-line line-number -Enable the comfort noisefunctioncng-on OptionalEnabled by default.