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Technical Specifications
10-24 Issue 1 December 1997
The protection switching interrupt interval in response to an equipment failure is
60 milliseconds for all 1x1 protected circuit packs. The interrupt interval is
measured at the DSn interface.
Transient Performance 10
Power Loss Restart 10
After system shutdown due to power loss, the system will exhibit a 2-second error
free transmission interval which begins within 1 minute of restoration of power.
Transmission Start-Up on Signal Application 10
The system, after having no signal applied for greater than 1 minute at the DSX-n
interface or at any nonhierarchical interface, will exhibit a 2-second error free
transmission interval which begins within 5 seconds of the reapplication of a
signal.
Delay 10
Table 10-13 lists the worst-case measured one-way delay within a DDM-2000
OC-12 Multiplexer and OC-12 Regenerator.
Performance Monitoring 10
Table 10-14 shows the provisionable range of the thresholds for monitored
parameters and, in parentheses, the default thresholds. Thresholding of any
parameter(s) can be disabled. PM parameters are provisionable via the CIT.
Table 10-13. OC-12 Multiplexer and OC-12 Regenerator Transmission Delay in
Microseconds
Mode
Drop Interface
OC-12 OC-3/OC-3c DS3 EC-1
Terminal 4 5 4
Ring 4 4 5 4
OC-12 Regenerator 2
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