Trunk Cards - Mitel 470 System Manual

Expansion Stages and System Capacity
Each FXO card can be fitted with one call charge module.
The number of RJ45 sockets on the front depends on the type of interface card. On
cards with 16 or more interfaces part or all of the RJ45 sockets are multiply assigned.
They are fed to the fan-out-panel (FOP) using patch cables and then split to individu-
ally assigned RJ45 sockets (see "Fan-out panel FOP", page 148).
The splits can also be made elsewhere, e.g. using system cables available separately
(see "Prefabricated system cable 4 x RJ45", page 113).
Fig. 15 Example of an interface card (2PRI with 2 IP media modules fitted)
3. 3. 2. 1

Trunk cards

The trunk cards contain interfaces for connection to the analogue public network
(PSTN), the digital public network (ISDN) or for networking systems to create a private
telephony network (PISN). The trunk cards can be used and operated on any slots for
interface cards.
The trunk cards contain either FXO interfaces (FXO: Foreign Exchange Office), PRI in-
terfaces (PRI: Primary Rate Interface) or BRI interfaces (BRI: Basic Rate Interface).
BRI cards contain both network interfaces (BRI-T) and terminal interfaces (BRI-S). On
the BRI cards 4 interfaces can be individually configured to BRI-S or BRI-T.
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Mitel 470 as of R4.1
syd-0585/1.2 – R4.1 – 08.2016