The AT&T SB67138 + (2) SB67108 four-line corded base and cordless system features DECT 6.0 Zero Blind Slot Digital technology. This technology strengthens the radio signal in areas that normally have a weak signal to the base unit. Each extension handset provides individual voicemail , line status, and message waiting indication.Mobile employees have easy access to push to talk, paging, call transfer and 3-way conferencing, You can choose between standard speakerphone or headset operation. The SB67138 speakerphone base supports 4 lines with 100 name and number phonebook directory, power failure protection and automated attendant. The repeaters extend the range between handset and base by 900 meters.FAQSB67138 + (2) SB67108 Features:New DECT 6.0 Technology1.9GHz Corded / Cordless Phone Combo4-Line OperationCaller ID / Call WaitingExpandable Up To 10 Handsets100 Minute Digital Answering SystemAutomated AttendantHandset Message AccessVoice MenuLarge Backlit LCD DisplayDual Speakerphone (Base & Handset)Lighted Keypad50 Station Name / Number Caller ID Memory100 Station Phone Directory / Dialer3-Way ConferencingMusic On Hold CompatibleNew Call Indicator10 Station Speed DialVoicemail Waiting IndicatorSpeakerphone Volume ControlSelectable RingtonesHandset / Ringer Volume ControlHandset to Base / Handset IntercomCall TransferPageChain DialLast 10 Number RedialHoldMuteLine In Use Indicator2.5mm Headset JackBilingual Menu Support (English / Spanish)Starter Bundle Includes:1 Base & 1 Cordless Handset (SB67138)2 Cordless Handset (SB67108)

• Expandable Up To 10 Handsets
• 100 Minute Digital Answering System
• Large Backlit LCD Display
• Automated Attendant
• Last 10 Number Redial
• 100 Station Phone Directory / Dialer