ADC HDSL4 Manual do Utilizador descarregar pdf (Página 30)

Table 19: B8ZS HDSL Spans - Maintenance

Required Tests General Information Parameters

Pulse (Attenuation) HDSL card reading at customer

premises

ADC/Pairgain

0 to -28 DB

(Each link when doublers are used.)

Adtran HDSL and HDSL2

0 to -30 DB

(Each link when doublers are used.)

Adtran HDSL4

0 to -35 dB (No regenerator or 1st link ( CO to regenerat-

or))

0 to -31 dB (Regenerated signal 2nd link (regenerator to

premise.))

Signal to Noise Margin HDSL card reading at customer

premises

ADC/Pairgain or Adtran

6 or greater

Signal Level HDSL card reading at customer

premises

ADC/Pairgain or Adtran

0 to -7.5 DB

Note: 0 DB level may be as high as +1.6 DB

QRSS

1 five minute test

test pattern 0 errors

1 in 8

1 two minute test

test pattern 0 errors

All Ones

1 two minute test

test pattern 0 errors

All Zeros

1 thirty second test

test pattern 0 errors

Special Note: For Adtran HDSL2 cards used in a Litespan system. Although the Adtran card is shipped with a line

code of B8ZS, the Litespan will change that value to the Litespan automatic default of AMI. The Central Office, NOC or

AT&T Practice ATT-TP-000-000-006

Issue 1, 08/25/06

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 36 37 38

Sem comentários

ADC HDSL4 Manual do Utilizador Página 30