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 AT&T 1070 4-Line Expandable Corded Phone System with Caller ID/Call Waiting and Speakerphone Compatible with theATT1040 and ATT1080 (not backwards compatible with other 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 CL82213 2 Handset Answering System with Caller ID/Call Waiting Digital answering system with up to 14 minutes record time and Extra large, backlit LCD display for easy viewing.