AT&T 1070 4-Line Expandable Corded Phone System with Caller ID/Call Waiting and Speakerphone, 1 Handset, Black/Silver

4 line operation. Compatible with as few as 1, and as many as 4, telephone lines

32 Speed Dial and 16 Intercom;Chain Dialing

3-Party Conferencing

Speakerphone; Product does not work on a digital line, Refer user manual below.

Handset, Speakerphone, Headset and Ringer Control Volume

DSL Subscribers may need to us a DSL Filter

Compatible with AT&T 1040 and AT&T 1080 models

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