ADTRAN 1200305L1 system manual Modules NXT1HSSI Test Port, Modules NXT1HSSI Test LOC LB

Section 4, User Interface Guide ATLAS 550 System Manual

MODULES (NXT1HSSI) > CONFIGURATION > CODE

Write security: 2; Read security: 5

Set this field to match the line code of the circuit to which it is connected (this information is available from the network supplier). Choose either AMI (Alternate Mark Inversion) or B8ZS (Bipolar Eight Zero Substitution).

MODULES (NXT1HSSI) > CONFIGURATION > TX YEL

Write security: 3; Read security: 5

Controls the transmission of yellow alarms. Choose either ON or OFF.

MODULES (NXT1HSSI) > CONFIGURATION > LBO

Write security: 2; Read security: 5

Selects the Line Build Out (LBO) for the network interface. When connecting an ATLAS 550 port to a DSX-1 interface, this parameter is typically set to match the distance (in feet) between the ATLAS 550 and the device with which it is connecting. When you select this item, a list of choices displays (0 dB, -7.5 dB, -15 dB, -22 dB, 266 FT, 399 FT, 533 FT, 655 FT). Select the appropriate option.

MODULES (NXT1HSSI) > TEST

Write security: 5; Read security: 5

These options initiate different types of tests and display test results.

MODULES (NXT1HSSI) > TEST > PORT

Read security: 5

Displays the operating port number. There are four available T1 interfaces on the NxT1 HSSI and NxT1 HSSI/V.35 Option Modules.

MODULES (NXT1HSSI) > TEST > LOC LB

Write security: 4; Read security: 5

Initiates a loopback on near-end (local) port (see Figure 12). The following options are available:

LINE	Metallic loopback
PAYLD	Payload loopback - framing and clocking are regenerated

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