Siemens SINAUT ST7 - Page 54

Mounting and Installation
© Siemens AG 2002 All Rights Reserved 6NH7811-0AA22
MD2 Modem (07/2002)
2-35
Connection at a 2-wire Terminal Point
2-wire terminal point via LTOP1 2-wire terminal point via LTOP2
Fig. 2-20 Connection of the MD2 to LTOP1 or LTOP2 at a 2-wire terminal point
Connection at a 4-wire or 2 x 2-wire Terminal Point
4-wire terminal point via LTOP2 2 x 2-wire terminal point via LTOP2
Fig. 2-21 Connection of the MD2 to an LTOP2 at a 4-wire or 2 x 2-wire terminal point
MD2
RJ12
1 2
X2
2
1
S1
X6
21 43
X1
LTOP1
RJ12
2534
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
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
2-wire
dedicated line 1
2-wire
dedicated line 2
MD2
RJ12
2
1
LTOP2
1 2
X2
2
X3
1
RJ12
2534
1
S2S1
X6
2
21 43 65
X1
2
1
Pin 2, 5:
transm. +
receive
r
Pin 2, 5:
transm. +
receive
r
Pin 2, 5:
receiver
Pin 3, 4:
transm.
Pin 3, 4:
transm. +
receive
r
Pin 2, 5:
transm. +
receive
r