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ADCP-61-743 • Issue 3 • September 2004
Page 11
© 2004, ADC Telecommunications, Inc.
4 FRONT PANEL OPERATION
All controls and indicators of the RTAU including the jack accesses for a selected DS1 signal
are located on the front panel (Figure 3). The controls and indicators are described in Table 2.
Table 2. RTAU Front Panel Description
INDICATOR COLOR DESCRIPTION
STATUS Red Module failure.
Yellow LED test.
Green Module operating normally.
B8ZS / AMI Green Indicates that the user has selected B8ZS line code for the bipolar
interface.
Yellow Indicates that the user has selected AMI line code for the bipolar
interface.
Off Indicates that the user has selected the internal signal monitor
generator at the RTAU.
Intrusive Test Yellow LED test.
Green Indicates that the selected test mode of the RTAU is intrusive.
Off No intrusive testing in progress.
SWITCH DESCRIPTION
LINE CODE This is a pushbutton switch that toggles the DS1 interface between B8ZS, AMI, or
the internal signal monitor generator at the RTAU. When B8ZS has been selected,
the B8ZS/AMI LED will turn green; when AMI has been selected, the B8ZS/AMI
LED will turn yellow; when the internal signal monitor generator at the RTAU is
selected, the B8ZS/AMI LED will turn off. Using this switch overrides the Craft
Interface RTAU Line Code field setting.
BIPOLAR
ACCESS JACKS
DESCRIPTION
DS1 RX Bantam jack connection from DS1 receive to test equipment. Bipolar DS1 signals
from external test equipment can be applied to the RX jack for testing.
DS1 TX Bantam jack connection from DS1 transmit to test equipment. Bipolar DS1 signals
from external test equipment can be applied to the TX jack for testing.
Note: The DS1 RX and DS1 TX jacks may be used with 22 AWG Plastic Insulated
Cable (PIC) up to 655 feet in length. Access for drop or insert of DS1 signals
towards the network (DS3 interface) or toward the customer (DS1 distribution
modules) for monitoring and intrusive testing is configured through the Craft
Interface or the TL1 interface.