`- 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—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