S-Access SA-REP-ETHERLINK_II-1DA-PL, Руководство пользователя

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ETHERLINK II - Repeater Manual
Page 39 of 106
For the E1 interface, calculations according to G.826 are only possible in the framed mode
according to G.704 with the CRC4 option enabled. In the framed mode with the CRC4 option
disabled, only FAS errors are detected.
The estimation of a bit-error rate is not within the scope of G.826 calculations.
The G826 and G826 E1 command (the Performance management menu) are used to view the
G.826 error performance statistics.
3.6.5 BERT test
BERT testing is provided in a simple way. It’s preferred to switch on the Loop2 on the remote
unit (slave) and setup the BERT on the master unit.
Figure 3.18. BERT setup Example
Configuration Example:
CO_BERT>CONF
--------------------------------------------------------------------------------
Current BERT configuration:
--------------------------------------------------------------------------------
Interface : E1-1, Internal (to xDSL1)
Pattern : 2E7
TX Slots : [00-15] PG PG PG PG PG PG PG PG PG PG PG PG PG PG PG PG
: [16-31] PG PG PG PG PG PG PG PG PG PG PG PG PG PG PG PG
RX Slots : [00-15] BT BT BT BT BT BT BT BT BT BT BT BT BT BT BT BT
: [16-31] BT BT BT BT BT BT BT BT BT BT BT BT BT BT BT BT
--------------------------------------------------------------------------------
CO_BERT>
3.7 Alarm indication
3.7.1 LEDs
The LEDs are used to display normal operation conditions and alarm conditions of a device
DSL 1
– a LED showing the status of the first line interface;
DSL 2
– a LED showing the status of the second line interface;
Eth
– a LED showing the status of the Ethernet interface;
G.703 1
– a LED showing the status of the first Е1 interface;
G.703 2
– a LED showing the status of the second E1 interface;
DSL*
– a LEDs showing the status of line interfaces at connectors;
Eth*
– a LEDs showing the status of the Ethernet interface at the connector;
E1*
– a LED showing the status of E1 interfaces at connectors.
Master Regenerator Slave
E 1
Interface
1 LOOP 2 1 : R
BERT activated
Loop2 activated