AASTRA 4425 IP Vision for MD Evolution User Guide - Manual (Page 35)

35 MD Evolution – Dialog 4425 IP Vision
Introduction to Your Extension
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15 Headset Key
Pressing this key toggles between the handset calling mode and an
headset operation. Your extension indeed accepts the connection
of an headset. The headset jack is located on the underside of your
extension.
See also the “
Your Extension’s Accessories ” section.
16 Location of the Microphone
17 Location of the Loudspeaker
Your extension has a microphone and a loudspeaker for the
handsfree or speakerphone calling modes.
18 Handset
This also features a speakerphone function.
19 Satellite or Add-on Key Panel (not depicted)
Your extension may be equipped with (a) satellite(s), each featuring
17 additional programmable repertory keys. From one to four (4)
additional key panels may be connected to your extension.
See also the “
Your Extension’s Accessories ” section.