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SNMP MIB Objects
E-23
3160-A2-GB21-80
March 1999
Synchronous Port Table, RS-232-like MIB
The synchronous port table contains an entry for each of the synchronous data
ports and the MODEM or COM port when the port is configured for synchronous
operation. For the DSU/CSU, the entries in the table that are counters
(rs232SyncPortEntry 3–7) are used to collect statistics and are not supported.
Synchronous Port Table – “rs232SyncPortClockSource”
(rs232SyncPortEntry 2)
This object specifies the clock source for the port. Only the following values are
supported by the DSU/CSU.
H internal(1) – The port uses an internal clock.
H external(2) – The port uses an external clock.
Input Signal Table, RS-232-like MIB
This table contains entries for the input signals that can be detected by the unit
for each of the synchronous data ports.
Input Signal Table – “rs232InSigName” (rs232InSigEntry 2)
This object contains the identification of a hardware input signal. Only the
following values are supported by the DSU/CSU.
H rts(1) – Request-To-Send.
H dtr(4) – Data Terminal Ready.
Input Signal Table – “rs232InSigState” (rs232InSigEntry 3)
This object contains the current signal state. Only the following values are
supported by the DSU/CSU.
H on(2) – The signal is asserted.
H off(3) – The signal is not asserted.
Input Signal Table – “rs232InSigChanges” (rs232InSigEntry 4)
This object is not supported by the DSU/CSU.