Installation & Connections
Shelf and Card Connections
076R200-000
SpectraComm IP Router Card
2-11
Issue 2
Installation and Operation Manual
Figure 2-5
Terminal Server DCE Cable Pinouts (Sheet 2 of 2)
Network (T1) and Modem Line Adapter Cable Pinouts
The SC-IP’s T1 port and Modem Lines port share the RJ48 connector located on the shelf rear panel
at the SC-IP slot (J17-J32). It supports T1 (or modem) connectivity using a RJ48-to-T1 (or modem)
Y-adapter cable. The table below describes the Y-adapter cable pinouts.
Table 2-8
Y-Adapter Cable Pinouts
Signal
Direction
Shelf Connector
(RJ48)
Switched Network
(RJ11)
T1 Line
(RJ48)
T1-Rx-Ring
From line
1
-
1
T1-Rx-Tip
From line
2
-
2
-
-
3
-
-
T1-Tx-Ring
To Line
4
-
4
T1-Tx-Tip
To Line
5
-
5
Modem-Tip
two-wire
bi-directional
7
3
-
Modem-Ring
8
4
-
RED/GRN
BRN/RED
RED/BRN
19
18
17
DB25M
16
41
18
DCE INTERFACE CABLE P/N 025H503-004
GND
RX
TX
42
17
43
16
41
18
TELCO
50-PIN M
1
2
3
4
5
6
7
8
RJ-45
8-POS
DCE
RS-561
PORT 6
TELCO
50-PIN F
HARMONICA BLOCK P/N 209-036-034
GRY/RED
RED/GRY
BLU/BLK
22
21
20
19
44
21
GND
RX
TX
45
20
46
19
44
21
1
2
3
4
5
6
7
8
RJ-45
8-POS
DCE
RS-561
PORT 7
BLK/BLU
ORG/BLK
BLK/BRN
25
24
23
22
47
24
GND
RX
TX
48
23
49
22
47
24
1
2
3
4
5
6
7
8
RJ-45
8-POS
DCE
RS-561
PORT 8
