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Loop Interface:
Modulation Type ................ 2B1Q
Mode ................................... Full duplex, echo cancelling
Number of Pairs .................. Two
Bit Rate ............................... 784 kbps per pair
Baud Rate ........................... 392K baud per pair
Service Range ..................... Defined by CSA guidelines
Loop Loss ........................... 36 dB maximum @ 200 kHz
Bridged Taps ...................... Single taps < 2 kft, total taps < 2.5 kft
Performance ........................ Compliant with Bellcore TA-NWT-001210
Return Loss ......................... 20 dB (40 kHz to 200 kHz)
HDSL Tx Signal Level ....... 13.5 dBm
Input Impedance ................. 135Ω
DS1 Channelization ............ Channels 1-12 on Loop 1, Channels 13-24 on Loop 2
Power:
Input Power ........................ Span-powered by HTU-C: 3.5 watts, maximum
Tests:
Diagnostics ......................... Loopback initiated with HDSL in-band codes or from HTU-C or HTU-R
Physical:
Dimensions ......................... 0.719" x 2.625" x 6.5"
Weight ................................ < 1 lb.
Environment:
Temperature ........................ Operating (Standard): -40°C to +70°C; Storage: -40°C to +85°C
Relative Humidity .............. Up to 95%, non-condensing
7. WARRANTY AND CUSTOMER SERVICE
ADTRAN will replace or repair this product within
10 years from the date of shipment if it does not
meet its published specifications or fails while in
service (see ADTRAN Carrier Networks Equipment
Warranty, Repair, and Return Policy and
Procedure, document 60000087-10A).
Contact Customer and Product Services (CAPS)
prior to returning equipment to ADTRAN.
For service, CAPS requests, or further information,
contact one of the following numbers:
Part Number
1246045L1
ADTRAN Sales
Pricing/Availability
(800) 827-0807
61246045L1-5B
Table 7. ADTRAN 239 HRE Specifications
craft interface.
Self-test initiated from the HTU-C or HTU-R.
Section 61246045L1-5, Issue 2
ADTRAN Technical Support
Presales Applications/Postsale Technical Assistance
(800) 726-8663
Standard hours: Monday-Friday, 7 a.m.-7 p.m. CST
Emergency hours: 7 days/week, 24 hours/day
ADTRAN Repair/CAPS
Return for Repair/Upgrades
(256) 963-8722
Repair and Return Address
ADTRAN, Inc.
CAPS
901 Explorer Boulevard
Huntsville, Alabama 35806-2807
7
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