Aastra AXD

Installation and Maintenance Manual - Aastra 5000 AMT/PTD/PBX/0058/4/6/EN
Description des sous-ensembles 01/2011 Page 263
The principle for wiring an analogue set is shown in the diagram below:
Figure 4.52
WIRING AN LAX OR LMX CARD
Each line is supplied with balanced direct current. This voltage may vary between -43 V
and -56 V.
The maximum line resistance for a 22mA current is 1000 Ohm. The maximum line current
for a 200 Ohm resistance is 40 mA. With the "set on hook" the permanent line current can
reach 2.5 mA maximum without interference.
The wiring constraints are:
• maximum line length:
- 0.4 mm wire: about 2 km,
- 0.6 mm wire: about 3.5 km.
1
2
3
4
5
6
7
8
5
4
1
2
3
4
5
6
7
8
Connecteur
8 plots
13
P
B
X
_
M
A
T
R
I
X
_
C
A
R
T
E
_
L
A
X
_
R
J
_
C
A
B
L
A
G
E
_
0
1
_
0
1
18
Carte LAx ou LMx