User Manual

AS4000 Subscriber Terminal
Installation and Commissioning
DLP 008
605-0000-454
Draft Issue 1.3 Date 8/02/00
Page 8 of 8
5.4 L Series Customer Interface RJ45
1 2 3 4 5 6 7 8
8 7 6 5 4 3 2 1
SRX-
STX-
STX+
SRX+
SRX-
STX-
STX+
SRX+
Plug
Socket
Configuring the S-Bus
1. SIU used with a terminal connected to theRJ45 or a Short S-Bus: Options are
either one terminal up to 800m away from the SIU unit, or any number within
150m (total cable length).Extended S-bus: The extension wiring for an ISDN
line must daisy chain each socket, and the SIU must have it's 100 ohm
termination in (factory default).
2. Extended S-Bus. For cabling over 150m. The last socket on the cable must
have terminating resistors enabled. The SIU must be set to long cabling with
the 100ohm resistor out. The sockets can be ordinary RJ45 data sockets except
the last (furthest) RJ45 socket must have 100ohm terminating resistors across
3-6 and 4-5. The polarity should be preserved. In the B1 SIU the 100ohm
resistor is switch in or out using the jumpers labeled "P3" & "P7" on the SIU
ISDN B1 board (they are located right next to the RJ45 socket). See
Link position for Short S- Bus or Terminal
directly attached (factory default)
Link position for Extended S- Bus
RJ45
P3 P7
P5
Assy 303-1047-900
B Series Daughter board
RJ45
P3 P7
P5
Assy 303-1047-900
B Series Daughter board
1 2 3 4 5 6 7 8
Last socket for Extended S- Bus
connect 100ohm resistors across
4-5 and 3-6
STOP. THIS PROCEDURE HAS BEEN COMPLETED.