MT9072 Zarlink Semiconductor, Inc., MT9072 Datasheet - Page 6
![no-image](/images/no-image-200.jpg)
MT9072
Manufacturer Part Number
MT9072
Description
Octal T1-E1-J1 Framer
Manufacturer
Zarlink Semiconductor, Inc.
Datasheet
1.MT9072.pdf
(278 pages)
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MT9072
Alarms
6
Yellow Alarm
D4 mode, two types:
ESF mode, two types:
T1DM mode :
Alarm Indication Signal (AIS)
•
Loss Of Signal (LOS)
•
Declared if fewer than six zeros are detected
during a 3 ms interval
consecutive zeros are received
1. Bit position 2 is zero for virtually every DS0
2. Two consecutive ones in the S-bit position
3. Reception of 0000000011111111 in eight or
4. Reception of 1111111111111111 in eight or
Loss Of Signal is declared if 192 or 32
more codewords out of ten (T1)
more codewords out of ten (J1)
over 48ms
of the twelfth frame
Bit 2 of the T1DM synchronization byte is 0
T1/J1 Mode
Remote Alarm Indication (RAI)
•
Alarm Indication Signal (AIS)
•
Timeslot 16 Alarm Indication Signal
•
Loss Of Signal (LOS)
•
Remote Signaling Multiframe Alarm
•
Bit 3 of the receive NFAS
Unframed all ones signal for at least a double
frame or two double frames
All ones signal in timeslot 16
Loss Of Signal is declared if 192 or 32
consecutive zeros are received
Y-bit of the multiframe alignment signal
E1 Mode
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