Alcatel-Lucent 1643 AMS Applications And Planning Manual page 174

Technical Specifications
Miscellaneous Discrete Inputs/Outputs
• The user can assign, through the EMS or local workstation, an alarm message and
alarm severity to each of the four miscellaneous discrete inputs (MDIs). They are
equivalent with other system alarms.
• When receiving power, all four miscellaneous discrete outputs (MDOs) are
normally open. If power is lost, MDO 1's contacts close (assigned to indicate
power failure). MDO 2-4 are respectively assigned to Prompt alarm, Deferred
alarm and Information alarm.
• The MDI inputs and MDO outputs are available from a 25 pin SUB-D male
connector.
Performance monitoring
• Performance monitoring is in accordance with ITU-T G.826 and G.784
• The following four parameters are available to estimate the error performance of a
path:
– SES: number of Severely Errored Seconds in the received signal
– ES: number of Errored Seconds in the received signal
– BBE: number of Background Block Errors in the received signal
– UAS: number of UnAvailable Seconds in the received signal
• Monitoring can be done on the incoming MS4, MS1, VC-4, VC-3, VC-12, VC-11
signals of the 1643 AM / 1643 AMS unit
• Performance monitoring data is stored in one current and sixteen recent 15 minutes
registers, and one current and one recent 24 hours registers. Note that these
counters are only applicable to Lucent OMS users. However, ITM-CIT users will
only have access to currently available PM bins.
• Threshold reports are generated when user-settable performance parameters are
exceeded during 15 minutes and 24 hours periods
• Ethernet performance monitoring information can be derived from packets sent,
bytes received and bytes dropped. This information is available in 15 minutes or 24
hours registers.
• ISDN Performance monitoring information can be derived for 2 Mbit/s signal from
pN_EBC (Near-end Errored Block Count).
• For transparent, it is possible to do near-end performance monitoring on each 2
Mbit/s signal in both directions (PDH to SDH and SDH to PDH) at the 2 Mbit/s
system interface. Near-end information is obtained from CRC-4 violations and
defects (E1 non-intrusive monitoring).
Equipment dimensions
1643 AM:
• Dimensions (H x W x D) 83 x 439 x 295 mm (without the wall or rack mounting
system)
• Weight of 5 kg with an option card.
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10-14 Alcatel-Lucent - Proprietary
See notice on first page
System specifications
365-312-801R7.2
Issue 3, May 2007