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Watson-TDM-Manual-W.doc
Version 2.0-01
Watson TDM
Operating Manual
Revision: 2008-02-07 3-11
Depending on the distribution of NT1 and LT functionality, two configurations are
possible for option 1:
The master is E1 configured transparent, AIS-generation on and AIS-
detection off; the slave is PRA NT1 & LT, CRC4 processing off.
The master is PRA LT with CRC4 processing off; the slave is PRA NT1 with
CRC4 processing off.
Note:
For proper operation in Option 1, the equipment at the customer side (NT2) and
at the central office side (ET) must be in CRC4 framed mode.
L
R
M
G
Local CRC error information
Remote CRC error information
CRC Monitor
CRC Generator
Optional
Mandatory
Digital Link
T V3'
M
G
G
M
NT2 ET
R
L
L
R
RX
TX
TX
RX
Figure 3-10: Digital Link without CRC Processing
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