ADTRAN 239 H4R Installation And Maintenance Manual

CONTENTS
1. GENERAL .............................................................. 1
2. INSTALLATION ................................................... 2
3. FRONT PANEL FEATURES ................................ 5
4. HDSL4 DEPLOYMENT GUIDELINES ............... 6
5. MAINTENANCE ................................................. 10
6. SPECIFICATIONS ............................................... 10
7. WARRANTY AND CUSTOMER SERVICE ...... 10
FIGURES
Figure 1. ADTRAN 239 H4R .....................................1
Figure 2. HDSL4 Circuit Segments ............................. 6
Figure 3. Resistance Budget Span Powering Two
Repeaters .....................................................8
Figure 4. Resistance Budget Span Powering Two
Repeaters (Example) .................................. 9
TABLES
Table 1. Card Edge Pin Assignment ......................... 2
Table 2. Compliance Codes ...................................... 3
Table 3. 239 H4R Capacity Guidelines for ADTRAN
Housings ..................................................... 3
Table 4. 239 H4R Capacity Guidelines for Other
Housings ..................................................... 4
Table 5. LED Indicators ........................................... 5
Table 6. Single Pair Cable DC Resistance
Ω
Value ( ) .................................................... 7
Table 7. ADTRAN 239 H4R Specifications .......... 11

1. GENERAL

This practice provides installation and maintenance
(I/M) instructions for the ADTRAN 239 T1 HDSL4
Repeater (H4R), P/N 1221445L1. Figure 1 is an
illustration of the H4R. H4R equipment features
include:
• TC PAM line coding
• Lightning protection
• In-band loopback control
• Standard 239 form factor repeater apparatus case
design
• Remote provisioning and pass-through
performance monitoring
61221445L1-5A
239 H4R
HDSL4 Repeater
Installation and Maintenance
Section 61221445L1-5, Issue 1
Trademarks: Any brand names and product names included in this document are
trademarks, registered trademarks, or trade names of their respective holders.
239 H4R
1221445L1
Figure 1. ADTRAN 239 H4R
An ADTRAN span powered HDSL4 circuit consists
of an H4TU-C, up to two H4Rs and an H4TU-R. Due
to span power limits, the number of H4Rs permitted in
the circuit depends on the type of H4TU-C used. An
ADTRAN 239 H4R provides DS1 transport on all
revised resistance design (RRD) 26 AWG and/or 24
AWG loops. Two ADTRAN 239 H4R repeaters
extend the range of a loop up to 42.5 kft (24 AWG).
Repeater placement on single H4R loops depends only
on the attenuation properties of the loop segment.
Repeater placement for dual H4R loops requires both
segment attenuation and segment DC resistance
requirements be satisfied (refer to section 4, HDSL4
Deployment Guidelines).
Section 61221445L1-5A
Issue 1, June 2002
CLEI Code: T1R5YP3D_ _
LP1
NET
LP2
LP1
CUST
LP2
LL RL
/
(Y) (G)
1