NEC Electra Elite 48/192 Features And Specifications Manual page 94

Electra Elite
Features and Specifications Manual
When an incoming CO/PBX call is received from the CO during the
¥
waiting period of the Automatic Redial feature, Automatic Redial is
released, and a busy tone is sent to the station.
The handset must be lifted off-hook to disable Automatic Redial after
¥
an outside call is answered.
Issue 6
A - 73