3Com VCX V7111 Installation Manual page 23

Cables and Cabling Procedures
Table 8
Cable
50-pin Telco cable (only relevant to
the 24FXS). An Octopus cable is
not included with the 24FXS
package.
RS-232 serial cable
Grounding strap
AC Power cable
RJ-45 Ethernet Connector Pinouts
Figure 9
RJ-45 Connector and Pinout
1 2 3 4 5 6 7 8
1 - Tx+
2 - Tx-
3 - Rx+
6 - Rx-
RJ-11 Phone Connector Pinouts
Figure 10
RJ-11 Connector and Pinout
1 2 3 4
1 -
2 -
3 -
4 -
VCX V7111 Fast Track Installation Guide
Cabling Procedure
Wire the 50-pin Telco connectors according to the pinout in
1
Figure 11
Attach each pair of wires from a 25-pair Octopus cable to its
2
corresponding socket on the MDF Adapter Block's rear.
Connect the wire-pairs at the other end of the cable to a male
3
50-pin Telco connector.
Insert and fasten this connector to the female 50-pin Telco
4
connector on the 24FXS rear panel (labeled Analog Lines 1–
24).
Connect the telephone lines from the Adapter Block to a fax
5
machine, modem, or telephones by inserting each RJ-11
connector on the 2-wire line cords of the POTS phones into
the RJ-11 sockets on the front of an MDF Adapter Block as
shown in Figure
Connect the RS-232 port to your PC's RS-232 port with a straight
serial cable. Using the RS-232 port is optional.
When not using the power cable as the ground, connect an
electrically grounded strap to the chassis grounding screw and
fasten it securely according to the current standards. This is
mandatory for all installations that require separate grounding or
correct surge protection.
Connect the VCX V7111 100–250V~ 50–60 Hz power socket to
the mains.
4, 5, 7, 8
not
connected
Not connected
Tip
Ring
Not connected
and Table 9 on page 25.
12.
23