ND-71548 (E) CHAPTER 1
Page 5
Issue 2
INTRODUCTION
2.3 How To Follow Trees
This manual explains performance of a predetermined procedure (work contents covered in each NAP) in a
“Tree” format as shown in Figure 1-4. Before engaging in the intended work, be sure to understand the work
contents by tracing the given tree.
Figure 1-4 Example of a Tree
START
On the MDF, make temporary cross connections between the Trunk for Direct-In Termination (DIT)
and an LC.
C.O. Line Incoming Call Station B dials the number of LC C (Station C).
Incoming Call to Station via
DIT Trunk The call terminates to Station A; Station A rings.
Confirm that the ringing is distinct from that of an intra-
office call or ordinary C.O. call.
• The ringing signal for Direct-In Termination calls can
be the same as that used for C.O. calls if the related
Office Data is assigned.
System Data SYS1, INDEX 72, SYS3, INDEX 0, and
parameter DR of Command “ARTD”.
Answer and Talk Station A goes off-hook.
Station A and B talk with each other.
Release Station A and B both go on-hook.
Remove the temporary cross connections.
END