Call Charge Modules; Interface Cards; Trunk Cards - Mitel SMB Controller System Manual

C 3
HAPTER

Call charge modules

Interface cards

Interface cards can be assigned to two categories:
•

Trunk cards

These cards provide interfaces for connection to public dial-up networks or for networking systems
to create a private telephony network.
• Terminal cards
These cards provide interfaces for connecting digital and analogue voice and data terminals.
On some cards some of the interfaces are configurable (BRI-S/T). This means that these cards cannot
be clearly assigned to any particular category. They are listed both among the trunk cards and the
terminal cards.
Interface cards are fitted into slots IC1...IC4 (see
front panel).
The interfaces are routed to the front panel using the wiring adapters (see
The length varies depending on the type of interface card. For precise dimensions see the Chapter
nical data.
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.
Some trunk cards contain both network interfaces (BRI-T) and terminal interfaces (BRI-S). On these
cards the ratio of BRI-S interfaces to BRI-T interfaces is determined by the use and plug-in orientation of
the wiring adapters (see
Table 3.12:Trunk cards (Sheet 1 of 2)
Type
Figure 3.4:
Fitting a wiring adapter).
Network interfaces
per card
Mainboard interfaces, display and control elements and
Design of the interface cards
Max. number Remarks
of cards
E
XPANSION WITH CARDS AND MODULES
E S
XPANSION TAGES AND
Wiring adapter).
S C
YSTEM APACITY
Tech-
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