Installation & Connections
Shelf and Card Connections
076R200-000
SpectraComm IP Router Card
2-5
Issue 2
Installation and Operation Manual
Interface Port Descriptions
Network / Modem Port
(Interface “A” in
Figure 2-1
)
The Network/Modem port interface is an RJ48C connector located on the shelf rear panel at the SC-
IP slot (J17-J32). The table below describes the port pinouts.
•
For T1 connectivity, use a RJ48C-RJ48C 4-wire straight-thru or crossover cable
(GDC P/N 022H024-XXX or 027H266-XXX).
•
For modem connectivity with or without the T1 interface, use a network/modem line adapter
and a modular cable.
AUX/Sync DTE Port
(Interface “B” in
Figure 2-1
)
This shared port is a RJ48 connector located on the shelf rear panel at the SC-IP slot (J33-J48).
When enabled as the AUX interface this port supports an asynchronous connection to an external
modem. When enabled as the serial1 interface this port supports a synchronous connection to a SC
521A device for DDS network connections (a RJ45-to-DB25M adapter cable is required).
The table below describes the AUX/Sync DTE port pinouts.
Table 2-3
NTWK Port Pinouts
Pin Signal
Direction
Description
Connectivity
1
Rx Ring
To SC-IP
Receive Data (Ring)
T1
2
Rx Tip
To SC-IP
Receive Data (Tip)
T1
4
Tx Ring
From SC-IP
Transmit Data (Ring)
T1
5
Tx Tip
From SC-IP
Transmit Data (Tip)
T1
7
Modem-Tip
two-wire
(full duplex)
Tx-Rx Tip
Modem
8
Modem-Ring
Tx-Rx Ring
Modem
Table 2-4
AUX/Sync DTE Port Pinouts
RJ45 Pin
Signal
DB25M Pin
1
Tx Clk
15
2
DCD
8
3
Rx Clk
17
4
GND
7
5
RxD
3
6
TxD
2
7
CTS
5
8
RTS
4
