AT&T SynJ SB67128 Repeater for the AT&T SynJ SB67138 & SB67158 Small Business Phone System AT&T DECT 6.0 Range Repeater Connect up to 6 repeaters to one corded base Handoff Calles Between Repeaters Link 2 or More Repeaters Together SB67108 Accessory Handset Can roma between repeaters