3com DUA3700-0BAA04 Manual De Usuario
Ethernet Cabling
E-11
Ethernet Cabling
The Ethernet port of the CoreBuilder allows you to connect the
CoreBuilder to an Ethernet network for Network Management Station
(NMS) connectivity (such as Transcend™). The Ethernet port is a standard
RJ-45 connection of a terminal side.
CoreBuilder to an Ethernet network for Network Management Station
(NMS) connectivity (such as Transcend™). The Ethernet port is a standard
RJ-45 connection of a terminal side.
Follow these guidelines for 10BASE-T cabling:
Use only copper, unshielded twisted-pair (UTP) wiring. Do not use flat,
multiconductor cable (for example, silver satin), which is often
identified by solid colors such as red, green, yellow, or black.
multiconductor cable (for example, silver satin), which is often
identified by solid colors such as red, green, yellow, or black.
Use two twisted-pairs for each link.
Use twisted-pair wire that is 22-26 AWG (0.5 millimeter) in diameter.
Use twisted-pair wire with an impedance between 85 and 115 ohms.
Make sure that the maximum twisted-pair link length from the system
to any potential workstation location is 100 meters (328 feet).
to any potential workstation location is 100 meters (328 feet).
Cable Pinouts
Management connections may be established with a direct cable link to a
PC-AT serial port, or via modem. The following tables detail cable pinouts
for 9 and 25 pin PC-AT links, and for a modem connection.
PC-AT serial port, or via modem. The following tables detail cable pinouts
for 9 and 25 pin PC-AT links, and for a modem connection.
CoreBuilder 7000 Serial Port
The CoreBuilder 7000 provides a standard DB-9 connector for
management connections (refer to Figure E-1). Table E-8 details the
pinout and functions for this connector. The CoreBuilder 7000 plays the
standard role of a DCE.
management connections (refer to Figure E-1). Table E-8 details the
pinout and functions for this connector. The CoreBuilder 7000 plays the
standard role of a DCE.
Figure E-1 Serial Port Pinouts