Modules Located In The Ccu; Module Location - Mitel 300 Installation And Maintenance Manual

Modules located in the CCU

There are a number of modules that can be installed in the CCU.
 PSTN Line Module (Coloured Black). This provides 2 PSTN exchange lines. Up to two of
these modules can be installed in the CCU to provide two or four PSTN lines.
 Digital Line Module (Coloured Red). This card provides one ISDN Basic Rate Interface.
The same module is used for the network T interface and the internal S-bus. Up to two of
these modules can be installed in the CCU providing one or two Basic Rate Interfaces.
There are two slots in the CCU for the Network modules. If required one slot can
be equipped with a PSTN module and the other with an ISDN Module.
 Voice module 2, 4 or 8 port (Coloured Blue). Only one of these modules can be inserted in
a unit.
 Primary Rate ISDN module (Coloured Yellow). This module provides for a Primary rate
ISDN interface. Up to 30 B-channels can be provided.
When a Primary Rate Interface is installed, the unit can be further equipped with
one or two PSTN modules or one or two ISDN Basic Rate modules to provide
backup in the event of the Primary Rate interface failing.

Module location

The Network, Voice and Primary Rate module locations in the CCU are indicated below.
Mitel 3000 Australia Installation and Maintenance Manual
Voice Module
12
Primary Rate ISDN
Network Module 1
PSTN lines 1 and 2 or the
First Basic Rate ISDN Line
Network Module 2
PSTN lines 3 and 4 or the
second Basic Rate ISDN Line
or the Internal ISDN S
0
Circuit