Cabling The Serial Connectors - 3Com SuperStack II 32x Installation Manual

Cabling the Serial
Connectors
Table 1-2 Serial Connector Cabling Information
Connection to
V.35 CSU/DSU device or
modem
V.35 CSU/DSU device or
modem
V.35 IBM cluster controller
V.35 IBM cluster controller
X.21 CSU/DSU device or
modem
RS-449 or V.36 CSU/DSU
device or modem
RS-449 or V.36 IBM cluster
controller
RS-232 CSU/DSU device or
modem
RS-232 CSU/DSU device or
modem
RS-232 IBM cluster controller UNIVERSAL
RS-232 IBM cluster controller RS-232
* If you cable the UNIVERSAL connector, you need to perform some software configuration. For more information, refer to the
software guide.
The serial connectors provide the following options:
The UNIVERSAL connector can be converted to a V.35, V.36, X.21,
RS-449, or RS-232 connector.
All serial connectors can function in either DTE or DCE-like mode,
which allows you to connect a serial connector to either a CSU/DSU
device or modem (DTE mode), or to an IBM cluster controller
(DCE-like mode). A connection to an IBM cluster controller must be
made using a permanent leased line only. You can operate the serial
connectors in any combination of DTE and DCE-like modes.
The cables you use determine the serial connector function. Table 1-2
lists the types of devices available for serial connections, cable options
for connection to each device, and if the cable is sold by 3Com. Cables
used for IBM cluster controller connectivity (DCE-like mode) are referred
to as direct connect cables.
Connector
Connector * Mode
V.35 DTE
UNIVERSAL DTE
V.35 DCE-like
UNIVERSAL DCE-like
UNIVERSAL DTE
UNIVERSAL DTE
UNIVERSAL DCE-like
UNIVERSAL DTE
RS-232 DTE
DCE-like
DCE-like
Cable Name
V.35 to V.35 DCE cable
V.35 adapter cable
V.35 to V.35 direct connect
cable
UNIVERSAL to V.35 direct
connect cable
X.21 adapter cable
UNIVERSAL to RS-449/V.36
DCE cable
UNIVERSAL to RS-449/V.36
direct connect cable
UNIVERSAL to RS-232 DCE
cable
RS-232 to RS-232 DCE cable No. Easily obtained from
UNIVERSAL to RS-232 direct
connect cable
RS-232 to RS-232 direct
connect cable
Cabling the Connectors
Sold by 3Com?
No. Easily obtained from
cable manufacturer.
Yes (3C8035).
No. See Chapter 2 for
pin assignments.
Yes (3C8135).
Yes (3C8021).
No. See Chapter 2 for
pin assignments.
No. See Chapter 2 for
pin assignments.
Yes (3C8023).
cable manufacturer.
Yes (3C8123).
Yes (3C8132).
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