Trunk Cards - Aastra 470 System Manual

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 pri-
vate 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
interfaces (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.
Tab. 24 Trunk cards
Network inter-
Type
faces per card
1  PRI
1PRI
2  PRI
2PRI
4  BRI-T
4BRI
8  BRI-T
8BRI
4  FXO
2)
4FXO
8  FXO
2)
8FXO
16  FXO
2)
16FXO
1)
1 fewer card if CPU2 application card is fitted
2)
The availability of the FXO trunk cards depends on the sales channel.
Aastra 470 ab R3.0
syd-0337/1.5 – R3.0 – 05.2013
Expansion Stages and System Capacity
Max. number of
Remarks
cards per system
1)
7 • Can be fitted with 1 IP media module
• Contains 30 B channels
• 10 B channels can be used licence-free
1)
7 • Can be fitted with 2 IP media modules
• Contains 2  30 B channels
• 2 10 B channels can be used licence free
1)
7 • All interfaces configurable to BRI-S
1)
7 • Four fixed BRI-T interfaces
• 4 BRI-T interfaces configurable to BRI-S
1)
7 • 1 call charge module can be fitted for 4 ports
1)
7 • 1 call charge module can be fitted for 8 ports
4 • 1 call charge module can be fitted for 16 ports
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