Carrier Access Network Device Axxius 800 Uživatelský manuál stáhnout pdf (Strana 528)

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C-18 Axxius 800 - Release 2.2

Loopback Tests

V.35/V.54 Loop

V.35/V.54 Service Card Description

The V.35 Card with V.54 Loop Test provides the capability for the V.35 card to detect

network loop back initiation signals and provide a network loop back for loop testing.

Each channel of the V.35 will continuously monitor the incoming data bit stream for a

particular loop pattern. On detection of the pattern the channel will acknowledge the

loop test request and put the channel into loop back. The channel will then continuously

monitor for the loop test end pattern. On detection of the loop end pattern the channel

will remove loop back and resume normal operation. Front panel LED’s will indicate

Loop test. Each channel can also initiate the loop test pattern causing another V.54

compatible device to loop back. The channel will then transmit a test pattern and

calculate bit error rate (BER).

View V.35/V.54 Card Configuration

Where a V.35/V.54 card is in slot 6.

> show 6:1

SLOT 6:

Settings for V35 Port 1:

CTS: Always High

Timing: Source

Rx Clock Inversion: Normal

Tx Clock Inversion: Normal

Data Inversion: Normal

Data Speed: 64K

Data Rate: 768 K

V.54 Rx LB: disabled

V.54 Rx Addr: 255

V.54 Test Addr: 255

V.54 Tx Prep count: 15

V.54 Rx Prep count: 15

V.54 Test Pattern: QRSS

V.54 Ignore ACK: OFF

Loopback: None

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