AT&T 993 user manual Optional headset

Getting started

Optional headset

Make sure the headset is firmly plugged into the headset jack under the rubber flap on the right side of the telephone. There is a low pitch (error) tone if you press HEADSET when the headset is not plugged in.

For hands-free telephone conversations, use any industry standard 2.5 mm headset (purchased separately). For best results, use an AT&T 2.5 mm headset. To order an AT&T 2.5 mm headset, visit our website at

www.telephones.att.com or call 1 (800) 222-3111.In Canada, dial 1 (866) 288-4268.

Plug 2.5 mm headset into the jack on the right side of the telephone base (beneath the small rubber flap).

NOTE: If the sound quality of the headset is poor, try unplugging it, and firmly plugging it in again.

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