Aastra AXD

Installation and Maintenance Manual - Aastra 5000 AMT/PTD/PBX/0058/4/6/EN
Description des sous-ensembles 01/2011 Page 291
Information can be transmitted:
• either using RON/TRON signals,
• or an alternate current. The card has a 50 Hz current generator for this purpose,
• Power supply: the LI1 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 for the operation of its internal circuits.
Figure 4.63 O
VERVIEW OF THE LI1 CARD
J2
CA2 CA1
ON
2 14 3
ON
2 14 3
1
10
J3
1
10
J1
LI1 CARD
LI1 X
L0 R/T0 L1 R/T1
BUSY
TXRX
BUSY
TXRX
P
B
X
_
M
A
T
R
I
X
_
C
A
R
T
E
_
L
I
1
-
R
J
_
F
A
V
_
0
1
_
0
1
LI1 CARD FRONT PANEL