ATL Telecom AM2048 - Manual (Page 27)

ascom
telecom USER GUIDE AM768A/AM2048A
27
Issue 8
4.10.3 Structured Working, CRCs Enabled
In this case, the CRCs are checked and errored blocks are indicated back across the user interface
by use of the E bits.
This is the least ambiguous mode of operation from a performance monitoring point of view because
each transmission section is covered by its own independent CRC check.
To set up this configuration, go to the “Configuration > User Port” Menu and select
Rx
Unframed ( )
Rx Framed (*)
Rx CRC4 [X]
Tx TSO Transparent ( )
Tx TSO Generate (*)
Tx CRC4 [X]
In this mode of operation, the test loop activation messages defined in ETS 300 233 are passed to
and from the LT over the V3 interface.
CRC4 CRC4
NT1 LT TE
CRC4G
Tx
FAW
A
SA4
SA5
SA6
SA7
SA8
TS0
Rx
CRC4M CRC4G
Tx
TS0
Rx
CRC4M
FAW
A
SA4
SA5
SA6
SA7
SA8
HDSL
CRC6
CRC4G
Tx
FAW
A
SA4
SA5
SA6
SA7
SA8
TS0
Rx
CRC4M CRC4G
Tx
TS0
Rx
CRC4M
FAW
A
SA4
SA5
SA6
SA7
SA8
HDSL
CRC6
ET
T
V3
E
E E
E
Figure 6 : Structured Working, CRCs Enabled