Handset noise reductionThis feature allows you to hear the voice ofthe person you are talking to clearly, byreducing the surrounding noise coming fromthe other party’s telephone.Press MNOISE REDUCTIONN to turn on/offwhile talking.Note:R When this feature is turned on, isdisplayed while talking.R Depending on the environment where thishandset is being used, this feature may notbe effective.R This feature is not available using thespeakerphone.R When both the “Equalizer” setting andnoise reduction are activated, isshown on the display.Handset equalizerThis feature clarifies the voice of the personyou are talking to, producing a morenatural-sounding voice that is easier to hearand understand.1 Press MMENUN while talking.2 MbN: “Equalizer” a MSELECTN3 MbN: Select the desired setting.4 Press MOKN to exit.Note:R When this feature is activated, isdisplayed while talking.R Depending on the condition and quality ofyour telephone line, this feature mayemphasize existing line noise. If it becomesdifficult to hear, turn this feature off.R This feature is not available while using thespeakerphone.Call shareYou can join an existing outside call.HandsetTo join the conversation, press M N whenthe other unit is on an outside call.Base unitTo join the conversation, press MZN when thehandset is on an outside call.Note for handset and base unit:R A maximum of 4 parties (including 1 outsideparty) can join a conversation using 3extensions. (4-way conference)R To prevent other users from joining yourconversations with outside callers, turn callsharing mode off (page 29).Power back-up operationWhen a power failure occurs, the chargedhandset temporarily supplies power to thebase unit (power back-up mode). This allowsyou to make and receive calls using a handsetduring a power failure. The base unit will notperform any other functions. However, somefunctions such as Caller ID and sharedphonebook are available only when using ahandset other than the handset supplyingpower to the base unit. You can program“Power failure” and the default setting is“Auto” (page 29).Important:R If a handset is not placed on the base unitwhen a power failure occurs, “Base nopower Press OFF” is displayed. Afterpressing MOFFN on the handset, place it onthe base unit to start power back-up mode.R Power back-up mode will not work if thebattery level of the power supplyinghandset is or .R Do not lift the power supplying handsetfrom the base unit during power back-upmode.R Do not touch the handset’s charge contactsduring power back-up mode.R If the battery level is low, the unit will notwork sufficiently during power back-upmode. In addition, in case handset batterypower runs out, we recommend connectinga corded-type telephone (without ACadaptor) to the same telephone line or tothe same telephone line jack using aPanasonic T-adaptor (page 5).For assistance, please visit http://www.panasonic.com/help 19Making/Answering CallsTG684x7x(en)_1127_ver021.pdf 19 2012/11/27 18:16:46