Filter
Top Products
61225236L1-5A Issue 1, August 2003 3
Shipping Contents
The contents include the following items:
• SHDSL T1/E1 NTU
• SHDSL T1/E1 NTU Installation and Maintenance
Practice
CAUTION
Electronic modules can be damaged by ESD.
When handling modules, wear an antistatic
discharge wrist strap to prevent damage to
electronic components. Place modules in
antistatic packing material when transporting
or storing. When working on modules, always
place them on an approved antistatic mat that is
electrically grounded.
Instructions for Installing the Module
All connections of the SHDSL T1/E1 NTU are made
through card edge connectors. The module operates in a
standalone chassis, or the ADTRAN HR12 HDSL
chassis.
When the module is installed in any of the NTU enclo-
sures, all connections are made through the enclosure
backplanes. Ensure chassis ground is properly
connected for either standalone or chassis-mounted
applications.
The SHDSL T1/E1 NTU is designed for a T200 or T400
type form factor housing and inserts into the customer
T1 or E1 T200 type equipment. Follow local practice
for installation of the SHDSL T1/E1 NTU.
The front panel provides LED status indicators for data
port, test, and alarm conditions.
The local management port is a DB-9 female connector
and is labeled V.24, with pinout and interchange circuits
per ITU-T V.24 standards. Table 2 illustrates the local
management port DB-9 pinouts.
LED Indicators
The front panel of the SHDSL T1/E1 NTU has five
LED status indicators. Table 3 lists the LED descrip-
tions.
Table 2. DB-9 Connector Pin Descriptions
Pin
Interchange Circuit
No. Name Function
1 109 RLSD Received Line Signal Detect - Internally connected to DTR and DSR
2 104 RD Receive Data from DCE
3 103 TD Transmit Data to DCE
4 108/2 DTR Data Terminal Ready - Internally connected to RLSD and DSR
5 102 SGND Signal Ground
6 107 DSR Data Set Ready - Internally connected to RLSD and DTR
7 105 RTS Ready to Send - Internally connected to CTS
8 106 CTS Clear to Send - Internally connected to RTS
9 --- NC Not Connected