
Preliminary Data Sheet
October 2000
T7630 Dual T1/E1 5.0 V Short-Haul Terminator (Terminator II)
86
L Lucent Technologies Inc.
Alarms and Performance Monitoring
(continued)
Event Counters Definition
The error events monitored in the receive framer’s status registers are defined in Table 44 for the hardwired
(default) threshold values. The errored second and severely errored second threshold registers can be pro-
grammed through FRM_PR11—FRM_PR13 such that the errored and severely errored second counters function
as required by system needs. DS1 errors are reported in the ET error registers, FRM_SR20 through FRM_SR35.
For the framer to correctly report coding and BPV errors, the LIU/framer interface must ber configured as dual-rail
mode.
Table 44. Event Counters Definition
Error Event
Functional Mode
Definition
Counter Size
(bits)
16
Bipolar Violations
(BPVs)
AMI
B8ZS
Any bipolar violation or 16 or more consecutive zeros.
Any BPV, code violation, or any 8-bit interval with no
one pulse.
Any BPV, code violation, or any 4-bit interval with no
one pulse.
Any F
T
or F
S
bit errors (FRM_PR10 bit 2 = 1) or any F
T
bit errors (FRM_PR10 bit 2 = 0).
Any F
T
or F
S
bit errors (FRM_PR10 bit 2 = 1) or any F
T
bit errors (FRM_PR10 bit 2 = 0).
Any F
T
, F
S
, or time slot 24 FAS bit error.
Any F
E
bit error.
Any FAS (0011011) or NOT FAS (bit 2) bit error.
Any received checksum in error.
CEPT HDB3
Frame Alignment
Errors (FERs)
SF: D4
16
SF: SLC-96
SF: DDS
ESF
CEPT
CRC Checksum
Errors
Excessive CRC
Errors
Received
E bits = 0
Errored Second
Events
ESF or CEPT with
CRC
ESF
CEPT with CRC
CEPT with CRC-4 E bits = 0 in frame 13 and frame 15.
16
≥
320 checksum errors in a one second interval.
≥
915 checksum errors in a one second interval.
NONE
16
All
Any one of the relevant error conditions enabled in reg-
isters FRM_PR14—FRM_PR18 within a one second
interval.
Any framing bit errors within a one second interval.
Any CRC-6 errors within a one second interval.
Any framing errors within a one second interval.
16
DS1: non ESF
DS1: ESF
CEPT without
CRC-4
CEPT with CRC-4
(ET1)
CEPT with CRC-4
(ET1 remote)
CEPT with CRC-4
(NT1)
CEPT with CRC-4
(NT1 remote)
Any CRC-4 errors within a one second interval.
Any E bit = 0 event within a one second interval.
Any Sa6 = 001x (binary) code event within a one sec-
ond interval.
Any Sa6 = 00x1 (binary) code event within a one sec-
ond interval.