Digit recordingAnswer ON/OFFAnswer ON/OFF indicationAuto record call and play call Remote operationSet 4 groups Auto IP and set IP ON/OFFFSK/DTMF CompatibleRecord incoming call listRecord outgoing call listDelete Caller ID numberArea code settingLCD display year, month, day, time and week5 level LCD brightness adjustablePhone works indicationLCD green back lightTwo-way Conversation recordingReceiver volume control on handsetRinger high/low switchP/T transitionSpeaker volume controlFlash time adjustableRedial functionHold call with music