Siemens SINAUT ST7 - Page 55

Mounting and Installation
6NH7811-0AA22 © Siemens AG 2002 All Rights Reserved
2-36 MD2 Modem (07/2002)
Connection at a 2-wire Tapping Point
Fig. 2-22 Connection of the MD2 to an LTOP2 at a 2-wire tapping point
Connection at a 4-wire Tapping Point
Fig. 2-23 Connection of the MD2 to two LTOP2s at a 4-wire tapping point
2-wire
dedicated line
2-wire
dedicated line
MD2
RJ12
2
1
LTOP2
1 2
X2
2
X3
1
RJ12
2534
1
S2S1
X6
2
21 43 65
X1
2
1
4-wire
dedicated
line #1
4-wire
dedicated
line #2
2
1
LTOP2
1 2
X2
2
X3
1
RJ12
2534
1
S2S1
X6
2
21 43 65
X1
2
1
2
1
LTOP2
1 2
X2
2
X3
1
RJ12
2534
1
S2S1
X6
2
21 43 65
X1
2
1
MD2
RJ12
Pin 2, 5:
transm. +
receive
r
Pin 2, 5: receiver
Pin 3, 4: transmitte
r