Expansion Stages and System Capacity
56
Aastra 470 as of R3.2
syd-0337/1.6 – R3.2 – 09.2014
3. 3. 2
Interface cards
Interface cards are fitted from the front into one of a total of 7 expansion slots (see
"Fitting interface cards", page 105
). Interface cards can be assigned to two catego-
ries:
• 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 BRI cards a part 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.
Up to 2 IP media modules can be fitted on PRI cards.
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 as-
signed. They are fed to the fan-out-panel (FOP) using patch cables and then split to
individually assigned RJ45 sockets (see
The splits can also be made elsewhere, e.g. using system cables available separately
(see
"Prefabricated system cable 4 x RJ45", page 112
Fig. 15
Example of an interface card (2PRI with 2 IP media modules fitted)
