User`s manual

20
You can use this telephone handsfree when you install any industry-standard
2.5mm corded telephone headset (purchased separately). For best results,
use an AT&T 2.5mm corded headset. To purchase a headset, visit our website
at www.telephones.att.com, or call 1 [phone]. In Canada,
dial 1 [phone].
Plug a 2.5 mm headset into
the HEADSET (
Use only
Supplied
Adapter
L4 L3/4 L2 L1/2
5.1
MS2085 Engraving:
MS2015 Engraving:
Use only
Supplied
Adapter
) jack on
the side of the deskset.
Side view of the deskset
NOTE: The HEADSET button on the deskset controls only the corded headset. For
more details on the operation of the cordless headset, refer to the user’s manual of the
cordless headset.
To add a corded headset to the deskset
Getting started
Adding a corded headset