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Preliminary Data Sheet
October 2000
TFRA08C13 OCTAL T1/E1 Framer
74
L Lucent Technologies Inc.
Alarms and Performance Monitoring
(continued)
Table 32. Event Counters Definition
(continued)
The receive framer enters an unavailable state condition at the onset of ten consecutive severely errored second
events. When in the unavailable state, the receive framer deasserts the unavailable state alarms at the onset of ten
consecutive seconds which were not severely errored.
Error Event
Functional Mode
Definition
Counter Size
(bits)
16
Bursty Errored
Second Events
DS1: non-ESF
Greater than 1 but less than 8 framing bit errors
within a one second interval
Greater than 1 but less than 320 CRC-6 errors within
a one second interval
Greater than 1 but less than 16 framing bit errors
within a one second interval
CEPT with CRC-4 (ET1) Greater than 1 but less than 915 CRC-4 errors within
a one second interval
CEPT with CRC-4 (ET1
remote)
within a one second interval
CEPT with CRC-4 (NT1) Greater than 1 but less than 915 Sa6=001x (binary)
code events within a one second interval
CEPT with CRC-4 (NT1
remote)
code events within a one second interval
All
Any one of the relevant error conditions enabled in
registers FRM_PR14—FRM_PR18 within a one
second interval
DS1: non-ESF
8 or more framing bit errors within a one second
interval
DS1: ESF
320 or more CRC-6 errors within a one second
interval
CEPT with no CRC-4
16 or more framing bit errors within a one second
interval
CEPT with CRC-4 (ET1) 915 or more CRC-4 errors within a one second
interval
CEPT with CRC-4
(ET1 remote)
interval
CEPT with CRC-4 (NT1) 915 or more Sa6=001x (binary) code events within a
one second interval
CEPT with CRC-4
(NT1 remote)
one second interval
All
A one second period in the unavailable state
DS1: ESF
CEPT without CRC-4
Greater than 1 but less than 915 E bit = 0 events
Greater than 1 but less than 915 Sa6=00x1 (binary)
Severely Errored
Second Events
16
915 or more E bit = 0 events within a one second
915 or more Sa6=00x1 (binary) code events within a
Unavailable
Second Events
16