High-bit-rate Digital Subscriber Line Range Extender
CONTENTS
1. GENERAL .......................................................... 1
FIGURES
TABLES
Codes ................................................ A-3
1. GENERAL
This practice provides installation and maintenance
(I/M) instructions for the ADTRAN 239 T1 HDSL
Range Extender (HRE) (ADTRAN part number
1246045L1). Figure 1 is an illustration of the HRE.
HRE equipment features include:
• Up to 12 kft of 24-gauge wire range in each
direction
• 2B1Q line coding
• Lightning protection
61246045L1-5B
239 HRE
Installation and Maintenance
Section 61246045L1-5, Issue 2
Trademarks: Any brand names and product names included in this document are
trademarks, registered trademarks, or trade names of their respective holders.
CLEI Code # T1R6LJPD_ _
2 3 9 H R
E
1 2 4 6 0 4
5 L 1
L P 1
N
E
L P 2
T
L P 1
C
U
L P 2
S
T
L L
R L
(Y )
(G )
Figure 1. ADTRAN 239 HRE
• In-band loopback control
• Designed for use in standard DDS or ISDN
repeater apparatus case
• Remote provisioning and pass-thru
performance monitoring
The ADTRAN 239 HRE can effectively double the
deployment range of standard HDSL and provide
Carrier Service Area (CSA)-compliant loops on
both sides of the HRE. The unit extends the digital
subscriber loop serving range up to 36 kft over
24-AWG twisted wire.
The HRE is used in conjunction with any span
powering T1 HDSL transceiver unit for the central
office (HTU-C) and any Low Voltage HDSL
transceiver unit for the remote end (HTU-R ).
Compatible ADTRAN HDSL transceiver units are
as follows:
Section 61246045L1-5B
Issue 2, April 2000
1