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Four-line accessory handset is designed for use with AT&T Four-Line Corded/Cor... Four-line accessory handset is designed for use with AT&T Four-Line Corded/Cordless Small Business System with Extendable Range and displays four lines. Design includes push-to-talk speakerphone and 50-name/number Caller ID history 100-name/number... more

Two-line speakerphone features Caller ID/Call Waiting and lets you dial and re... Two-line speakerphone features Caller ID/Call Waiting and lets you dial and receive calls on two different phone lines. Speakerphone lets you speak and listen without holding the handset leaves your hands free to do other things and lets more people... more

From the manufacturer CM18045 Accessory Handset Requires CM18445 The Party CM1... From the manufacturer CM18045 Accessory Handset Requires CM18445 The Party CM18045 Accessory Handset for the Party CM18445 Small Business System is an accessory handset only. It requires the Party CM18845 main console to operate. 4 Line Capability... more