AT&T ML17929 2-Line Corded Telephone, Black - Walmart.com
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User's manual
2.5mm Headset for Cordless Phone Telephone Headset with Noise Canceling Mic for DECT AT&T ML17929 Vtech Panasonic KX-TCA430 KX-T7630 Call Center Home Office Compatible with Jabra: Amazon.co.uk: Electronics & Photo