Datasheet
INSYS Modem 56k UL Command Overview
Juni 05 23
Bottom side terminal:
Terminal
11 OUT1NC Output 1 – normally closed
12 OUT1 Output 1
13 OUT1NO Output 1 – normally open
14 OUT2NC Output 2 – normally closed
15 OUT2 Output 2
16 OUT2NO Output 2 – normally open
17 b2 Through phone line
18 b1 Phone line
19 a1 Phone line
OUT 1-NC
OUT 1
OUT 2-NC
OUT 2
OUT 2-NO
OUT 1-NO
b2
b1
a1
a2
Line
RX+
RX-
TX+
TX-
Ethernet
20
19
11
12
13
14
15
16
17
18
11
12
13
14
15
16
17
18
19
20
20 a2 Through phone line
a1 and b1 are the incoming phone lines (e.g. outside line or private branch exchange).
a2 and b2 are used to connect a phone in series. In idle state, they are connected to a1
and b1 via a loop current connector. a2 and b2 are detached as soon as the modem uses
the line.
note: a2 and b2 are for the connection of a following telephone equipment. This tele-
phone equipment should be certified accordant UL 60950-1 part 6. Using only
cable Typ AWG26.
5.2.3 Power Supply
Power supply: 10…60 V DC
Power consumption: approx. 2,5 W (with connection)
Current consumption:
Supply voltage
Current (idle)
current (connection)
max . power-up current
10 VDC 200 am 240 mA 300 mA
24 VDC 100 mA 110 mA 150 mA
Note: The Power Supply must always be secured with a UL LISTED Fuse Typ T5A H 250V.










