IP 700 Series Phone Administrator Guide Appendix A. Configuration and Line Parameters6AOSAG0001-31A Copyright © 2011 ADTRAN, Inc. 65HandsetLevels ASCIIStringSets the audio levels of the handset usinga comma separated list of the followingsettings. The default values are listed nextto the name:TxGain 11544RxGain1 183RxGain2 258RxGain3 365RxGain4 516RxGain5 728RxGain6 1029RxGain7 1631RxGain8 2303RxGain9 3254RxGain10 4596Sidetone 579Handset DTMF Attenuation 13Caution: Do not change these valuesunless instructed by ADTRAN TechnicalSupport. Doing so could break TIA-810compliance.Config FileHeadsetCtl True orFalseEnables/disables switchhook control viacurrent detection on the headset interface.Default: FalseConfig FileWeb InterfaceHeadsetLevels ASCIIStringSets the headset audio levels using acomma separated list of the followingsettings. The default values are listed nextto the name:TxGain 6144RxGain1 183RxGain2 258RxGain3 365RxGain4 516RxGain5 728RxGain6 1029RxGain7 1631RxGain8 2303RxGain9 3254RxGain10 4596Sidetone 917Headset DTMF Attenuation 13Caution: Do not change these valuesunless instructed by ADTRAN TechnicalSupport. Doing so could break TIA-810compliance.Config FileTable 12. Configuration Parameters (Continued)Parameter Value Type Description Sources