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ND-71762 (E) CHAPTER 5
Page 51
Issue 2
INSTALLATION TEST PROCEDURE
(Procedure A)
START
A DTI/CCT is in use as the speech lines of No. 7 CCIS.
On the DTI/CCT card, set its MB switch UP.
In any office other than the Clock Master Office, disconnect the DTI cable connector at the DTI side
(Back place of the PIM)
PLO alarm is generated, but ignore it.
The PLO starts running by itself.
Make the following connection at the MDF using a paired wire.
The DTI does not recover. System message “3-J” is not displayed.
(CCH/CCT Link Failure may
occur, but ignore it.) The DTI/CCT is faulty.
The DTI recovered. System message “3-J” is not displayed.
(CCH/CCT Link Failure may
occur, but ignore it.) The DTI/CCT is normal.
Call the distant office and ask for repair.
An analog trunk is in use as the speech lines of No. 7 CCIS.
Remove the cross connection wires and disconnect them from the external line side.
Connect a telephone set to the trunk accommodating terminals concerned on the MDF, and talk with
the caller.
Normal Call the Distant Office and ask for repair.
Abnormal Replace the trunk card with a spare card.
END
TA
TB
RA
RB
DTI/CCT
LEADS
MDF
CROSS
CONNECTION