Attcon/Deskcon Fault - NEC Univerge SV8500 Operation And Maintenance Manual

4. ATTCON/DESKCON FAULT

This section explains the fault repair procedure when a specific Attendant Console (ATTCON) is in any of the
following faulty conditions.
• No speech can be made.
• No operations can be made.
4.1 Check Point
When repairing an ATTCON/DESKCON fault, consider the following items:
(1) Check the cable connections on the backplane.
(2) When replacing the ATI circuit card for primary ATTCON/DESKCON, the system is placed under Night
Mode during replacement procedure.
(3) When replacing the primary ATTCON/DESKCON, the system is placed under Night Mode during
replacement procedure.
4.2 ATTCON/DESKCON Control
Each ATTCON/DESKCON is controlled from an ATI (PA-CS33) circuit card. ATI circuit card is controlled
from the CPU card via the INT on the TSW card. Figure 5-8 shows the control route of the ATI circuit card.
ATI (PA-CS33) circuit card is used as an interface card between the SV8500 Server and ATTCON/DESK-
CON. The card is mounted in slot 12.
CHAPTER 5
RA
Receive
RB
DTI
TA
Send
TB
– 612 –
Operation Procedure for System with PIR
Loop-back
Cross Connection