- The AT&T TL90073 Accessory Handset is an accessory handset only - Requires the AT&T TL96273 phone system to operate - Caller ID announce - Push-to-Talk - HD audio with equalizer for customized audio - Simulated full-duplex handset speakerphone - Big buttons - Caller ID/call waitingﾗ50 name and number caller ID history - ECO mode power-conserving technology - Quiet mode - DECT 6.0 digital technology - Intercom between handsets - Conference between an outside line and up to 4 cordless handsets - 200 name and number phonebook directory - Voicemail waiting indicator - Quick access key for voicemail box - Last 10 number redial - English/Spanish/French setup menu - Mute - Any key answer
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