CN8223
2.0 Functional Description
ATM Transmitter/Receiver with UTOPIA Interface
2.4 Status and Alarms
2.4.3 Alarm Detection
The internal framers contain status indicators to obtain alarm information for link
maintenance. Table 2-13 shows the error indications by line mode. This table is
repeated as Table 3-17, in Chapter 3.0.
Table 2-13. Status Indications for All Modes (Register 0x38)
STS-1/STS-3c/
STM-1
Ext. Framer
(57 octet)
Bit
Internal DS3
G.832 E3/E4
Internal G.751 E3
15
14
13
Line FEBE Error
0
0
0
0
One-Second Count
One-Second Count
Invalid FEBE
One-Second Count
One-Second Count
Invalid FEBE
One-Second Count
Invalid FEBE
Signal Label
Mismatch
Payload Type
Mismatch
12
11
10
9
Path FERF Error
Path FEBE Error
Summary BIP Error
Line FERF
FEBE All 1s
MA FERF
MA FEBE
EM BIP Error
x
FEBE All 1s
PLCP FEBE Error
PLCP BIP Error
PLCP Frame Error
PLCP Yellow
PLCP LOF 2–3
PLCP LOF
FEBE All 1s
PLCP FEBE Error
PLCP BIP Error
PLCP Frame Error
PLCP Yellow
PLCP LOF 2–3
PLCP LOF
PLCP OOF
x
PLCP FEBE Error
PLCP BIP Error
PLCP Frame Error
PLCP Yellow/LOC
PLCP LOF 2–3
PLCP LOF
8
LOC
LOC
7
STS LOF 2–3
STS LOF
E3/E4 LOF 2–3
E3/E4 LOF
E3/E4 OOF
x
6
5
STS OOF
PLCP OOF/LOC
DS3 X-bit Yellow
DS3 Idle Code
DS3 AIS
PLCP OOF
4
Path Yellow
Path AIS
E3 A-bit Yellow
x
3
x
x
2
Line AIS
E3/E4 AIS
x
E3 AIS
x
1
STS LOP
DS3 OOF
E3 OOF
x
0
LOS (Input)
LOS (Input)
LOS (Input)
LOS (Input)
LOS (Input)
NOTE(S): “x” means content should be disregarded.
100046C
Conexant
2-21
CONEXANT [ CONEXANT SYSTEMS, INC ]
