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Installing the IpChannel Bank 30
SmartNode 4900 User Manual 3 • Hardware installation
3. Select and attach the appropriate twisted-pair from each FXS device on punch-down blocks for connection
to the chosen port on the IpChannel Bank.
Connecting the Ethernet ports
The IpChannel Bank has dual 10/100 Ethernet interfaces. One is for the WAN connection. The other is for
connecting to your Ethernet LAN. The Ethernet ports will auto-sense the correct speed of the local LAN and
automatically negotiate to half- or full-duplex operation. This section describes connecting the IpChannel
Bank to the Ethernet LAN via an Ethernet hub or switch.
Connecting the 10/100Base-T Ethernet ports to an Ethernet switch or hub. The 10/100Base-T Ethernet
port is designed to connect to an Ethernet switch or hub with a straight-through or cross-over Ethernet cable.
The Ethernet RJ-45 pin and signal definitions for the SN4900 or for a NIC card in a workstation/PC are
shown in figure 7. Connect a CAT-5 cable (one wired as shown in figure 8 or figure 9) between the SN4900
and the hub/switch.
Figure 7. Model SN4900 Ethernet port
Figure 8. Straight-through RJ-45-to-RJ-45 Ethernet cable diagram
Figure 9. Cross-over RJ-45-to-RJ-45 Ethernet cable diagram
RJ-45 Jack
(TX+) Transmit Data +
(TX-) Transmit Data -
(RX+) Receive Data +
4
5
(RX-) Receive Data -
7
8
1
2
3
4
5
6
7
8
DirectionSignal Name
3
1
2
6
Output
Output
Input
Input
SN4900
RJ-45 Pin No.
Hub
RJ-45 Pin No.
(TX+)
(TX-)
(RX+)
(RX-)
1
2
3
6
(RX+)
(RX-)
(TX+)
(TX-)
1
2
3
6
SN4900 10/100Base-T Port
RJ-45 Pin No.
PC 10/100Base-T Port
RJ-45 Pin No.
(TX+)
(TX-)
(RX+)
(RX-)
1
2
3
6
(RX+)
(RX-)
(TX+)
(TX-)
3
6
1
2