ATL Telecom AM2048 - Manual (Page 26)

ascom
telecom USER GUIDE AM768A/AM2048A
26
Issue 8
4.10.2 Structured Operation
For fractional working where not all pairs are equipped, the G.704 frame is padded out with the
programmable ‘Idle’ pattern.
To set up for structured working with transparent CRCs, go to the “Configuration > User Port” Menu
and select
Rx Unframed ( )
Rx Framed (*)
Rx CRC4 [ ]
Tx TSO Transparent (*)
Tx TSO Generate ( )
Tx CRC4 [ ]
The incoming structured data may be monitored for CRC4 errors, however, no E bits are returned at
the user interface from the transmission equipment. To do this, simply enable the Rx CRC4 checkbox.
CRC4
NT1 LT TE
CRC4G
Tx
FAW
A
SA4
SA5
SA6
SA7
SA8
TS0
Rx Tx
TS0
Rx
CRC4M
FAW
A
SA4
SA5
SA6
SA7
SA8
HDSL
CRC6
CRC4G
Tx
FAW
A
SA4
SA5
SA6
SA7
SA8
TS0
Rx Tx
TS0
Rx
CRC4M
FAW
A
SA4
SA5
SA6
SA7
SA8
HDSL
CRC6
ET
T
V3
E
E
Figure 5 : Structured Working, End to End transparent CRCs