NEC Electra Elite 48/192 Features And Specifications Manual page 305

Issue 6
E - 2
The Elapsed Call Time for each outside line operates independently.
¥
When several outside calls have been made from a station, the LCD
displays the elapsed time when talking on each individual call.
¥ During a 2-line conference call, the LCD displays the elapsed time of
the last individual line call.
The Elapsed Call Time display clears when a Tone Override is
¥
received.
¥ During a conference call that includes one outside party and two
internal parties, the Elapsed Call Time shows on the display of the
two internal parties.
Electra Elite
Elapsed Call Time