Ascotel® IntelliGate® 150/300 as of I7.9
Operation and Maintenance 167
syd-0210/1.7 – I7.9 – 12.2009
6. 3 Hardware update
Hardware maintenance comprises replacing cards and modules when there is a de-
fect or for a generation change. Safety regulations must be observed and the step-
by-step procedure must be followed.
6. 3. 1 Preparations
First steps before cards are removed or added:
• Inform users
• Prebar the system
• Disconnect system power supply
6. 3. 1. 1 Inform users
Inform all concerned users if the system has to be put out of operation during
working time.
Tip
To inform users, use the internal messaging system on the system termi-
nals.
6. 3. 1. 2 Prebar the system
Prebarring the system prevents setting up new connections. Ongoing calls are not
cleared down. If a user tries to set up a call while prebarring is activated, he will ob-
tain no dialling tone and the system terminal display will read "Not available"
The system is prebarred in the AIMS Configuration Manager or in the Fault & Main-
tenance Manager under 1_1_2 "Slot configuration": press the "Prebar system" button.
The LED display on the front panel shows when the system is prebarred (see
Tab. 88).
Ascotel® IntelliGate® Net:
In an AIN every node can be individually prebarred and unlocked again.
However, only when the Master is prebarred is it displayed. The barred
state of a satellite is visible neither on the Master nor on the satellite.
As soon as there are no more active connections in the prebarred system, the sys-
tem can be taken out of operation.
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