NEC nd-20292 manual 400-112

ND-20292

CHAPTER 4

APRIL, 1990

420.34Delayed 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.

420.35Centrex 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.

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