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PRICING AND AVAILABILITY 800.827.0807
TECH SUPPORT 800.726.8663
RETURN FOR REPAIR 256.963.8722
www.adtran.com
61223445L2-22A
Warranty: ADTRAN will replace or repair this product within the warranty period if it does not meet its published specifications or fails while in service.
Warranty information can be found online at www.adtran.com/warranty
.
FEATURES
TScan
The 239 H4R incorporates the TScan
™
feature, which allows for remote retrieval of circuit diagnostics
and performance of advanced fault location. For more information, refer to the Installation and
Maintenance practice.
Fast Retrain
Fast Retrain is an ADTRAN-proprietary feature that minimizes downtime due to an intermittent
impairment (bad splice, noise burst, etc.).
When such impairments occur after achieving HDSL synchronization, Fast Retrain is invoked to
restore service within 5 to 7 seconds. This short retrain time allows for reduced downtime compared to
the traditional 25 to 30 second retrain duration.
NOTE: For proper functionality, install Fast Retrain capable units on both ends of the circuit. Failure
of a Fast Retrain attempt initiates the traditional (25-30 second) retrain.
Fault Bridging
The Fault Bridging feature minimizes downtime due to intermittent impairments that appear on the
cable pair, for example, from a Ground Fault Interrupt (GFI), short, micro-interruption, bad splice, or
noise burst. This feature allows the DSL transceivers to maintain synchronization during an
interruption, thus avoiding a 25 to 30-second retrain. Depending on the type of impairment,
interruptions up to 200 ms can be bridged.
Bad Splice Detection
The Runtime TScan bad splice detection feature is an ADTRAN-proprietary non-intrusive method for
detection of anomalies (bad splices) in the copper plant. This feature non-intrusively monitors the cable
pair during runtime for the presence of bad splices that can potentially impact service.
Poor cable splices are often undetected by normal testing methods. Often, these splices present no
problem for the data transmission equipment until oxidation with the splice itself causes a rapid
impedance change, which can cause errors, signal margin fluctuation, and retrain of the DSL
transceivers. The splice detection feature is accessed from the Troubleshooting Screen through the craft
access port.
HOUSINGS AND CAPACITIES
Part Number Description CLEI Code Slots Stub
H4R Capacity
Recommended Slot
Assignments
Material
Above
Ground
Below
Ground
Above
Ground
Below
Ground
1150027L1 239/439 Housing DDMOABA1MA 4 Air 4 4 All All Stainless/Polymer
1150027L2 239/439 Housing DDMOBBA1MA 4 Gel 4 4 All All Stainless/Polymer
1150057L1 Universal Housing DDMODA01RA 4 Air 4 4 All All Stainless Steel
1150057L1 Universal Housing DDMODA01RA 4 Gel 4 4 All All Stainless Steel
1150058L1 Universal Housing DDMOEE01RA 8 Air 8 8 All All Stainless Steel
1150058L2 Universal Housing DDMOFE01RA 8 Gel 8 8 All All Stainless Steel
Manufacturer Description Manufacturer’s Part Number Slots
H4R Capacity Recommended Slot Assignments
Material
Above
Ground
Below
Ground
Above Ground Below Ground
ADC
®
Radiator II SPX-HRXC-30-AG-016GT 16 16 16 All All Stainless Steel
ADC Radiator SPX-HRXC-30-B1 8 8 8 All All Stainless Steel
Circa Telecom
®
HDSL-12A 760005 12 12 12 All All Stainless Steel
Circa Telecom HDSL-12B 760006 12 12 12 All All Stainless Steel
Arris
®
/Lucent
®
/AT&T
®
Keptel
®
Inter Link
™
809
RF809A3-XXX or RF809B3-XXX 12 8 N/A 1, 3, 4, 6
7, 9, 10, 12
N/A Polymer
Arris/Lucent/AT&T Keptel Inter Link 818/819 RF819A1 or RF819A2
RF819B1 or RF819B2
25 12 16 * Chamber 1:
1, 4, 7, 8, 11, 14
Chamber 2:
15, 17, 19, 20, 23, 25
Chamber 1:
1, 3, 5, 7, 8, 10, 12, 14
Chamber 2:
15, 16, 18, 19, 20, 22, 24, 25
Polymer
Arris Keptel Inter Link 819 Family AT819B1U or AT819A1U 12 8 8 2, 3, 5, 6, 8, 9, 11, 12 2, 3, 5, 6, 8, 9, 11, 12 Polymer
Arris/Lucent/AT&T Keptel Inter Link 820 Family RF820AX or RF820BX 2 to 8 Full Full All All Polymer
Charles Industries G21 Series 6212050002xx 25 12 N/A 1,2,4,6,7,8,9,11,13,15,18,24 N/A Stainless Steel
Charles Industries G21 Series 6212040002xx 12 6 N/A 1,3,4,6,8,11 N/A Stainless Steel
* For 16 slot use, the ambient air temperature measured 1 foot away and parallel to the housing should not exceed 115°F (46.1°C).
HDSL4 239 H4R Repeater