NEC Electra Elite 48/192 Features And Specifications Manual page 569

Issue 6
S - 64
When a call is stepped to the next higher station number, the next
¥
available station number is accessed.

I t may not be the next consecutively numbered station.
¥ Step Call is provided in a 10s group (e.g., 100~109) of stations.
When the highest station number in a 10s group is reached and is
busy, the search continues with the lowest number in the group.
¥ This feature is unaffected by tenant assignment.
When Station 109 is call forwarded to Station 121, Station 121 is
¥
busy, and a call is made to Station 109 which forwards to Station 121,
a call waiting tone is received. When Step Call is used, the call skips
to Station 122, when available.
¥ When using the Step Call feature, the system skips stations that are
busy including a busy ETW-24DS-1/2(BK)/(SW) TEL assigned with
Off-Hook Voice Announcement.
Electra Elite
Step Call