Ld4Nx Card - Aastra AXD Installation And Maintenance Manual

4.13.3

LD4NX card

4.13.3.1 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.
The LD4NX card works in LD4X mode when a jumper (J14) is removed, and allows the
use of the following additional features:
• Since the card uses the dedicated trunk of its slot, there are no longer any restrictions
on the location of the card.
• The card's hardware information can be read through the MMC (presence of an
EEPROM on the card).
• It is possible to declare up to10 cards in an Aastra XL.
• It is possible to read the status of the card's remote power supply once the card is in
service.
4.13.3.2 Functional description
The LD4NX 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 2 possible
configurations:
• LD4NX 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.
• LD4NX card fitted with a signal processing daughter card: used to connect 4-channel
DECT base stations to one to four of its interfaces (see the description of the duaghter
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 a daughter card, the LD4NX card (LD4N mode) 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). This is not the case for the LD4NX card (LD4X mode)
which uses the dedicated trunk of its slot. There are no longer any conflicts between the
cards. The restrictions concerning the location of the card in LD4N mode do not apply to
the card in LD4X mode.
Installation and Maintenance Manual - Aastra 5000
Description des sous-ensembles
AMT/PTD/PBX/0058/4/6/EN
01/2011 Page 217