Aastra AXD

AMT/PTD/PBX/0058/4/6/EN Installation and Maintenance Manual - Aastra 5000
Page 294 01/2011 Description des sous-ensembles
4.14.14.5Installation and wiring
The LI1 card is used to link together 2 iPBXs through an analogue TL. These analogue
TLs are wired using either two or four wires:
• with a two-wire TL, voice communications are carried in both directions on the same
pair (LA and LB) by overlapping electrical states.
• with a four-wire TL, one pair is dedicated to reception and the other pair to
transmission.
• The minimum diameter of the cables has to be 26AWG (0.4mm).
4.14.14.6Installing and wiring an LI1 card
A connector lead with the reference HG4661 simplifies wiring analogue TLs on the LI1
card.
Figure 4.64
LI1 CABLE
R/T1
L1
R/T0
L0
C4
C3
C2
C1
P
B
X
_
M
A
T
R
I
X
_
L
I
1
_
C
O
R
D
O
N
-
R
J
_
0
1
_
0
1