Aastra AXD

AMT/PTD/PBX/0058/4/6/EN Installation and Maintenance Manual - Aastra 5000
Page 268 01/2011 Description des sous-ensembles
4.14.5 LN16X card
4.14.5.1 Description
The LN16X card is used to connect 16 digital set lines to an iPBX.
4.14.5.2 Functional description
The LN16X card ensures:
• The transmission of signals between the UCV card and the D channel at 8 kbit/s on
each of the lines connected to a digital set
• Voice transmission between each of the 16 PCM TSs exchanged internally with the
UCV card and the B channel at 64 kbit/s on each of the 16 lines connected to a digital
set
• A power supply function: The LN16X card receives several supply voltages on the
backplane connector (J1):
- +5 V, -5 V used for the operation of its internal circuits,
- -48 V used to supply the digital set lines.
Figure 4.55 O
VERVIEW OF THE LN16X CARD
L15
L8
J1
P
B
X
_
M
A
T
R
I
X
_
X
L
_
L
N
1
6
X
_
C
O
T
E
_
0
1
_
0
1
L7
L0
LN16X CARD