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ACCULINK 316x DSU/CSU
C-14 December 1996 3160-A2-GB22-10
Table C-7
(2 of 4)
User Interface Configuration Options
MasterCom:Disab
Next Enab Disab Prev
Master Communication Unit. Specifies which circuit card in the 3000 Series Carrier is configured as the Master
Communication Unit. This is the circuit card that provides the shared communication (COM) port connection for the rest of
the carrier. The circuit card that is configured as the Master Communication Unit can have an external PC (supporting
Front Panel Emulation) connected to Port 2 on the Auxiliary Backplane to provide access for all Models 3151 and 3161
circuit cards in the carrier. The Master Communication Unit usually resides in Slot 1 of the carrier, but this is not
mandatory. Only one card per carrier can be configured as the Master Communication Unit.
Enab – This is the Master Communication Unit for the carrier.
Disab – This is not the Master Communication Unit for the carrier.
NOTE: This configuration option is only displayed for Model 3161 DSU/CSUs.
Com Use: ASCII
Next SNMP ASCII Term Prev
Communication Port Use. Specifies how the communication port is used.
SNMP – Specifies that the communication port is to be used as the management link to an external SNMP manager.
ASCII – Specifies that the communication port will be used as a proprietary ASCII port. This configuration option supports
Front Panel Emulation software and ASCII alarm messages.
Term – Specifies that the communication port is to be used as an async terminal interface. This configuration option
supports configuration and device management from a terminal.
NOTE: Only one port (communication or modem) can be configured as the SNMP management link at a time. If the
Modem Use configuration option is set to SNMP, only the ASCII or Term selections are available for this
configuration option.
Com Type: Async
Next Async Sync Prev
Communication Port Type. Specifies whether the port uses synchronous or asynchronous communication when the port
is configured as the SNMP management link.
NOTE: This configuration option is not available and is not displayed if the Com Use configuration option is set to ASCII.
In this case, the communication port is always asynchronous.
Com Clk: Int
Next Int Ext Prev
Communication Port Synchronous Clock. Specifies whether the port uses internal (Int) or external (Ext) clocking when the
communication port is configured for synchronous operation. This configuration option reverses the direction of the clock
(TXD, RXD) interchange circuits and allows the port to accept clocking from an external device. Connection to another
DCE requires the use of a crossover cable.
NOTE: This configuration option is not available and not displayed if the Com Type configuration option is set for
asynchronous operation.