user manual

ND-20292
CHAPTER 4
APRIL, 1990
420.34 Delayed Ringing
When a line key on a Multiline Terminal is
assigned Delayed Ringing, incoming ring tone
starts after a predetermined time. All Multiline
Terminal operations and indications at specific
line keys are the same as those for regular CO/PBX
and internal incoming calls with the exception that
the audible ring occurs after a preprogrammed
time interval. Separate delays for day and night
operations can be programmed.
420.35 Centrex Ringing
Ring tone duty cycle from CO line and PBX line
can be selected by the system programming.
Two ringing selected patterns are available to help
-
differentiate outside incoming calls from those
originated by a Centrex or PBX telephone.
0 2 set ON, 4 set OFF
0 0.5 set ON, 0.5 set OFF (intermittent tone)
Example: If the system is programmed so that ring
pattern 8 is used for incoming calls (as well as for
the 1st ring cycle) and pattern 0 is used for
internal Centrex/PBX calls, the following applies:
1. Incoming Outside Calls
All operations and indications are the same as
those of regular incoming outside calls and the
ring pattern is as in 0 above.
2.
Incoming Internal Centrex/PBX Calls
All operations and indications are the same as
those of regular incoming outside calls, however,
the first ring cycle uses pattern 0 while
subsequent ring cycles follow pattern 0.
400-112