AASTRA 4225 for MX-ONE Telephony Switch - Manual (Page 135)

135 Dialog 4223 Professional/Dialog 4225 Vision
Glossary
Glossary
Additional lines One or more additional extension numbers can be assigned to your
phone, these are programmed on free function keys.
Traffic state The different states your phone is in; calling, ringing, diverted, etc.
Exchange Switch. Your telephone switching system.
Idle mode The state your phone is in when nothing is activated; not calling,
not ringing, not diverted etc.
Speed Dialing number Abbreviated number or short number, used for making frequently
used numbers faster to dial.
Supervision Your extension number can be represented on a function key on
other extensions (two or more).
Triple Access Line A collective name for Line 1, Line 2 and Inquiry lines. Line 1 and
Line 2 forms your extension number and are available both for
incoming and outgoing calls. Inquiry can only be used for
outgoing calls.