Installation and Maintenance Manual - Aastra 5000 AMT/PTD/PBX/0058/4/6/EN
Description des sous-ensembles 01/2011 Page 209
4.13 Application cards (CLX)
4.13.1 LD4 card
4.13.1.1 Description
This S0/T0 ISDN interface card is used to connect to ISDN terminals, DECT base stations
or an ISDN network.
The S0/T0 interface can be configured to supply:
• one connection at reference point S0 to a terminal,
• one connection at reference point T0 to the network.
These cards also handle packet-mode data transmission service on channel D between
the network and a terminal.
4.13.1.2 Functional description
The LD4 card is a card connecting to the base rate interface of the ISDN network. It
includes 4 line interfaces configurable individually in S0 or T0. There are two possible
configurations:
• LD4 card without daughter card: used to connect the iPBX to the ISDN network or to
ISDN terminals. It is also used to connect 2-channel DECT base stations.
• LD4 card fitted with one or two signal processing daughter cards: for connecting 4-
channel DECT base stations to one to four of its interfaces (see the description of the
daughter card in Section 4.13.2.2 ); the other interfaces can be connected to the ISDN
network, ISDN terminals or 2-channel DECT base stations.
Fitted with one or two daughter cards, the LD4 card uses the TSs assigned to 2 slots,
hence forbidding equipment sharing the same PCM in the associated slot (see
configuration rules in section 3.5).
The S0 interface can supply remotely the terminal connected to it. This function is
implemented through a dip-switch. The LD4 card can be configured to use:
• The -48V trunk or
• On an AXL cabinet only, the 40V ISDN as remote power supply voltage of the S0
interfaces; the current is limited to 100 mA per interface.
-48 V is provided by the iPBX backplane, while the 40 V ISDN is connected via connector
S3.
The card also receives the +5 V supply voltage on the backplane connector (J1), used for
the operation of its internal circuits.
To Next Page
Loading...
Need help?
General
