boards.fm
P31003-H3560-S403-54-7620, 09/05
HiPath 3000 V6.0, HiPath 5000 V6.0, Provisional Service Manual
3-243
Boards for HiPath 3000
Peripheral Boards
Connecting ISDN terminals to HiPath 3750, HiPath 3700 (for U.S. only)
S
0
bus with MW jack
You must change the signal sequence to connect up ISDN telephones. Transmit wires must be
on the inside; receive wires on the outside (see Figure 3-101).
To do so, jumper the four wires on the provided line cord to the pins for the STMD8 ports on the
main distribution frame (MDF).
The ISDN terminals must have their own local power supply.
S
0
bus wiring from STMD8 port on MDF or from optiset E ISDN adapter (for U.S. only)
Figure 3-101
STMD8 - S
0
Bus Wiring from STMD8 Port or from ISDN Adapter (for U.S. only)
MW8 jack 2
(8-pin)
MW8 jack 1
(8-pin)
STMD8 port on
MDF (port 1 shown)
MW8 jack 1
(8-pin)
MW8 = Cross the wires as shown
(not required in S
0
bus from ISDN
adapter).
0
ABC
DEF
MNO
GHI
PQRS
TUV
↵←→
↑↵
123
456
789
0
ABC
DEF
MNO
JKL
GHI
PQRS
TUV
WXYZ
optiset E ISDN
adapter
MW8 jacks 2
to 7 (8-pin)
26
1
27
2
Contact is always estab-
lished using the center
pins
Last MW8 jack
(8-pin)
SR
SX
SX
SR
1
2
3
4
5
6
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
SX
SX
SR
SR
.
.
.
100
Ω
/0.25 W
Terminating
resistors in the last
jack