9500 MXC User Manual
3DB 23063 ADAA - Rev 004 July 2007 Vol. II-2-5
missing, or below the minimum level required.
Aux Data Port
The IDUs support synchronous or asynchronous auxiliary data via a DB-9 female
connector.
• Synchronous conforms to TIA/EIA-422 / V.11 at 64kbps, with selectable
clock. The source of the transmit clock can be set to internal (provided by the
auxiliary card) or external (provided by the user). For an external clock, channel
synchronization is supported by a selectable clock phase (rising or dropping
edge of the clock pulse).
• Asynchronous conforms to TIA/EIA-562 (electrically compatible with
RS-232 / V.24)
• Asynchronous baud rates are 1200, 2400, 4800, 9600, or 19200bps, with parity
and stop bit selection.
Auxiliary data is transported within the link overhead, which is shared with NMS
data.
Aux Data cable options include:
• Async DB-9 to wire-wrap.
• Sync DB-9 to wire-wrap.
• Async DB-9 to DB-9 crossover.
• Sync DB-9 to DB-9 crossover.
For more information on cable assemblies refer to Appendix C.
Alarm I/O Port
The IDUs include an alarm I/O function, which supports two TTL alarm inputs
and four Form C relay outputs via an HD-15 female connector.
Input events are mapped to outputs:
• Individual AUX alarm inputs or internal alarm events may be mapped to any
output within the network.
• Multiple input or internal events may be mapped to a common output.
Mapping is achieved using IP addressing for the destination Terminal, or if the
destination is a 9500 MXC Node, to its IP address plus the slot location and
output number for the AUX plug-in.
An HD-15 to wire-wrap Alarm I/O cable assembly is available as an option. For
AIS/PRBS15 may be forced onto a tributary using the System Control screen.
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