The AT&T 1040 4-Line Basic Expandable Corded Phone System with Speakerphone, 1 Handset, Black/Silver Compatible with the ATT1070 and ATT1080 (not backwards compatible withother AT&T 4-line models).
The AAT&T ML17929 2-Line Corded Speakerphone with Caller ID/CW Waiting is Easy-to-use corded speakerphone allows you to program up to 18 of your most-phoned contacts into the built-in memory for easy speed dialing.
The AT&T TL86109 DECT 6.0 2-Line Expandable Corded/Cordless Phone with Bluetooth Connect to Cell and Answering System allows you to conference between an outside line and up to four cordless handsets.
This AT&T EL50005 Accessory handset for EL523 series. Accessory handset only-requires base unit to operate. 30 name and number caller ID history. Extra large display for easy viewing.
The AT&T ML17939 2-line Corded with ITAD/CID two lines for your convenience and a digital answering machine that can record up to 12 minutes in each line.