Installation & Connections
Shelf and Card Connections
076R172-000
SpectraComm ADT
2-7
Issue 2
Installation and Operation Manual
Interface Port Descriptions
Internal Modem/Line Port
(Interface “A” in
)
The internal modem port interface is the upper RJ48C connector located on the shelf rear panel at
the SC-ADT slot (J17-J32). The table below describes the port pinouts.
Ethernet (LAN) Ports
(Interface “B” in
or
At the SC-ADT 16-port device, one Ethernet interface connector is provided at the lower RJ48C
connector located on the shelf rear panel (J33-J48). For the SC-ADT 32-port device, one ethernet
connector is located at the base card rear panel (J33-J48), with two additional Ethernet connectors
located at the Expansion card rear panel (J17-J23 and J33-J48).
These Ethernet ports provides 10/100BASE-T Ethernet connectivity and require RJ45-to-RJ45
straight-thru or crossover cables (GDC S-078H010-XXX or S-078H011-XXX). The table below
describes Ethernet port pinouts. Note that the Ethernet port can be used as a logical uplink port to
SpectraComm Ethernet Switches, SpectraComm IP cards or other hub/bridge devices. .
Table 2-3
Internal Modem/Line Pinouts
Pin Signal
Direction
Description
3
Modem2-Tip
two-wire (full duplex)
Tx-Rx (Tip)
6
Modem2-Ring
two-wire (full duplex)
Tx-Rx (Ring)
7
Modem1-Tip
two-wire (full duplex)
Tx-Rx (Tip)
8
Modem1-Ring
two-wire (full duplex)
Tx-Rx (Ring)
Table 2-4
Ethernet LAN Port Pinouts (RJ45S)
RJ45 Pin
Signal
Direction
Description
1
RX +
To SC-ADT
Receive Data
2
RX -
To SC-ADT
Receive Data
3
TX +
From SC-ADT
Transmit Data
4
75 Ohm Term
-
5
75 Ohm Term
-
6
TX -
From SC-ADT
Transmit Data
7
75 Ohm Term
-
8
75 Ohm Term
-
Summary of Contents for SpectraComm ADT 16-Port
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