Avaya Configuring Line Services Manual do Utilizador descarregar pdf (Página 181)

Configuring MCT1

6-11

Parameter: Line Coding

Default: B8ZS

Options: AMI

| B8ZS

Function: Selects a line coding method. AMI line coding is bipolar: a binary 0 is

transmitted as zero volts and a binary 1 is transmitted as either a positive

or negative pulse, opposite in polarity to the previous pulse. (When

conﬁgured for AMI line coding, the MCT1 link module remains

synchronized upon receiving up to 45 consecutive 0s.)

B8ZS (Bipolar with 8-Zero substitution) line coding replaces a block of

eight consecutive binary 0s with an 8-bit B8ZS code containing bipolar

violations in the fourth and seventh bit positions of the substituted code.

In the receive direction, the B8ZS code is detected and replaced with eight

consecutive binary 0s.

Instructions: Specify the line coding method.

MIB Object ID: 1.3.6.1.4.1.18.3.4.9.4.1.7

Parameter: Signal Level (dB)

Default: 0.0 dB

Options: -15 dB

| -7.5 dB | 0.0 dB | 0.5 dB | 0.8 dB | 1.1 dB | 1.5 dB

Function: Speciﬁes the T1 transmit power level in decibels (dB).

The DS1 values of -15 and -7.5 dB are long-haul and the carrier

determines these values if 0.0 dB is not sufﬁcient.

The DSX1 values of 0.0, 0.5, 0.8, 1.1, and 1.5 dB are short-haul and

correlate with cable length as follows:

Instructions: Specify the decibel level according to the length of the cable or as the

carrier speciﬁes.

MIB Object ID: 1.3.6.1.4.1.18.3.4.9.3.1.6

0.0 dB 0 to 133 ft

0.5 dB 133 to 266 ft

0.8 dB 266 to 399 ft

1.1 dB 399 to 533 ft

1.5 dB 533 to 655 ft

1 2 ... 176 177 178 179 180 181 182 183 184 185 186 ... 267 268

Sem comentários

Avaya Configuring Line Services Manual do Utilizador Página 181