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0.5 A (T) 250 V~
Contains the 0.5 Amp internal protection fuse for the
unit. For instructions on changing the fuse, see
“Renewing the Internal
Protection Fuse”
on
page 1-50
. Voltage and fuse rating may change
from country to country.
RESET
This push-button can be used to cancel an alarm condition. It
can also be used by your Technical Support service to reset or reload
the EPROM.
ISDN
This port is used to connect to the ISDN network. The port uses an
RJ45 connection socket. A standard ISDN line wall socket is required to
connect the ISDN cable to the ISDN port of the AccessBuilder 500.
Power switch
Provides the unit with switched ON/OFF isolation from
the electrical mains system.
MANAGER
The Manager port enables a management PC or terminal to
be connected to the AccessBuilder 500 using the 9-pin D-type to RJ11
Serial Manager cable supplied with the unit. The port provides VT100
terminal emulation, running at 9600 bps. Refer to
Appendix B
for more
information about cables.
You also need a proprietary communications software package such as
Windows ‘Terminal’ to communicate with the AccessBuilder 500.
WAN
This port is used to provide connection to a WAN, via a private
leased line. The port terminates with a 25-way D-type female connector.
This port supports any of the CCITT data transmission standards;
X.21/V.11 V.24/V.28 (RS232), and V.35/V.36 at data transfer rates up to
2 Mbps. Provided that connection cables that follow these standards are
used, the AccessBuilder 500 automatically detects the type of interface
that the port is required to support, and configure it accordingly.
Refer to
Appendix B
for information about the WAN interface cables
required. Suitable cables are available from your 3Com reseller as spare
parts, refer to
Appendix B
for the required item part number.