ATLAS 550 System Manual - Adtran

ATLAS 550 System Manual Section 4 User Interface Guide
MODULES (ST-BRI-4) > CONFIGURATION > LINE TERMINATION
Write security: 3; Read security: 5
Termination resistors in both the transmit and receive paths (100 Ω) are required (per CCITT I.430, ETSI
ETS 300012, and ANSI T1.605) for all BRI S/T interfaces operating in NT mode (User Term) and TE
mode (Network Term) in point-to-point applications. ANSI T1.605 provides examples of S/T interfaces
configured in a multi-point NT1 star operation. The NT1 star mode allows a single NT device to support
multiple T interfaces (TE devices). Custom cables are required for this type of application, and are not
available for purchase (from ADTRAN) for the ATLAS 550.
This parameter should be left in the default state for most applications.
MODULES (ST-BRI-4) > CONFIGURATION > PS1 LINE POWER
Write security: 3; Read security: 5
The ATLAS 550 is capable of providing 1W (at 40 V) power on each BRI S/T interface to provide line
power (phantom power) to TE equipment. Set this parameter to ON only if the TE equipment connected to
the S/T interface requires line power.
MODULES (ST-BRI-4) > TEST
Write security: 5; Read security: 5
These options initiate different types of tests and display test results.
MODULES (ST-BRI-4) > TEST > PRT
Write security: 5; Read security: 5
Identifies the port number. There are 4 available interfaces on the Quad BRI-S/T Option Module.
MODULES (ST-BRI-4) > TEST > LOCAL LOOPBACK
Write security: 4; Read security: 5
Do not enable line power on a BRI S/T interface configured for TE mode (Network
Term). Setting this parameter to ON in a TE configuration (Network Term) may result
in damage to the module.
Activates a local loopback toward the S/T interface. The following options are available:
NONE No active loopback.
LOOPBACK B1 Loops the first B channel of the interface.
LOOPBACK B2 Loops the second B channel of the interface.
LOOPBACK B1 + B2 Loops both B channels of the interface.
LOOPBACK 2B + D Loops the entire physical interface (both bearer channels and the data
channel).
61200305L2-1B © 2004 ADTRAN, Inc. 147