Expanding an Existing system
Modules may be removed and re-inserted in a system without disconnecting the power.
See page 38.
However if additional modules are being installed in a working system it is necessary to
power the system down before installing an MDF or Backplane.
If additional network modules are to be installed in spare slots, the system needs to be
reset before the switch recognises the new modules.
Installing an additional Network (Analogue or ISDN) module
Modules can be installed in spare slots on the system without powering the system
down. However the module will not be activated until the system is reset. This can be
achieved by pressing the reset button on the CCU MDF.
Pressing the reset button will invoke a warm reset and clear any
calls in progress.
Installing additional modules
The system must be powered down before installing an additional MDF on the
Backplane. When the MDF is installed it is recommended that the Module, and any
additional Network modules that may be required, be installed before the system is
powered up. When the system is powered up the additional modules will be recognised
by the system.
The power must be disconnected before installing an MDF or Backplane.
If Battery Back up is provided ensure the BBU switch is off and the
mains is disconnected.
BT Versatility
Installation and Maintenance Manual
37
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