
TMXF28155 Super Mapper
155/51 Mbits/s SONET/SDH x28/x21 DS1/E1
Preliminary Data Sheet, Rev. 1
October 2000
424
Lucent Technologies Inc.
28-Channel Framer Block Functional Description
(continued)
Performance Monitoring Functional Integration Into Superframer
The framer monitors the recovered line data for alarm conditions and errored events, and then presents this infor-
mation to the system through the microprocessor registers. To a lesser degree of importance, the framer also mon-
itors the receive system data when in the switching mode and presents the information to the system through the
microprocessor registers.
In the transport mode, both directions are monitored for alarm conditions and error events.
Table 312 shows the functions provided by the performance monitor function, identifies the associated status regis-
ter bits and event counter register, and establishes the functions validity in particular framing modes.
Table 312. Performance Monitor Functional Descriptions
Function
Description
Register or Bit
Name
Valid Framing
Modes For
Functions
ESF & J-ESF only
1
Performance report messages (PRMs) as per G.704 section
2.1.3.1.3.3, G.963, T1.231 section 6.3, and T1.403 section
9.4.2.
Provides status for errored seconds, bursty errored seconds,
severely errored seconds, and unavailable seconds at ET,
ET-RE, NT, and NT-RE.
Maintains a count of errored seconds, bursty errored
seconds, severely errored seconds, and unavailable
seconds at the ET.
Provides a status indication for a loss of signaling frame
alignment condition.
Provides a status indication for an out of frame condition.
—
2
—
All modes
3
—
All modes
4
FRM_LSFA
(Table 420)
FRM_OOF
(Table 420)
FRM_LTS0MFA
(Table 420)
FRM_TS0MFABE
(Table 420)
FRM_AUXP
(Table 421)
FRM_IDLEID
(Table 421)
FRM_AIS
(Table 420)
FRM_OAIS
(Table 420)
FRM_RAI
(Table 420)
FRM_ORAI
(Table 420)
FRM_OAIS
(Table 420)
FRM_ORAI
(Table 420)
FRM_LTFA
(Table 421)
All modes
5
All modes
6
Provides a status indication for a loss of time slot 0 CRC-4
multiframe alignment.
Provides a status indication for a time slot 0 CRC-4
multiframe alignment signal bit error.
Provides a status indication for auxiliary pattern detection.
CEPT CRC-4 only
7
CEPT CRC-4 only
8
CEPT CRC-4 only
9
Provides a status indication for detection of the DS1 idle
signal.
Provides a status indication for detection of an alarm
indication signal.
Provides a status indication for detection of an alarm
indication signal at the customer installation (AIS-CI).
Provides a status indication for detection of remote alarm
indication.
Provides a status indication for detection of remote alarm
indication at the customer installation (RAI-CI).
Provides a status indication for detection of time slot 16 AIS
(FRM_R_TS16AIS (Table 408)).
Provides a status indication for detection of remote
multiframe alarm in time slot 16 (RTS16MFA).
Provides a status indication for the loss of CEPT biframe
alignment (LBFA).
All modes except
CEPT CRC-4
All modes
10
11
All modes except
CEPT-CRC4
All modes
12
13
ESF & J-ESF only
14
CEPT CRC-4 only
15
CEPT CRC-4 only
16
CEPT CRC-4 only