AASTRA 4223 Professional for BusinessPhone User Guide - Manual (Page 113)

113 BusinessPhone — Dialog 4223 Professional / Dialog 3213
Accessories
Dialog 3213
The Option unit DBY 410 02 is an optional accessory, to be
installed on the bottom of your telephone set. The following devices
can be installed via the Option unit:
• Tape recorder
• Extra bell or busy indication outside your door
• Enhanced Headset functionality
• PC Sound Card
• Second handset
Note: For people with impaired hearing the Option unit
offers the possibility to amplify the receiving volume in the
handset and headset.
Extra handset
Useful for involving a second person in your conversation, for
talking or just listening.
Tape recorder
When a recording of the telephone conversation is needed, for
evidence purposes, a tape recorder can be connected.