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10 61221002L2-5B
Table 13. Troubleshooting Guide
Condition
At power up, all front panel
indicators are OFF
The STAT LED remains RED.
The STAT LED is OFF, but the
HLOS LED remains RED.
The STAT LED is OFF, but the
RLOS LED remains RED.
Solution
1. Verify that the channel bank or ONU BPS power LEDs are on.
2. Make sure that the unit is fully and correctly inserted into the channel bank or ONU.
3. If step 1 fails, contact Alcatel customer service (800-848-0333). If step 1 passes, but step
2 fails, replace the H2TU-C.
1. Verify that the channel bank or ONU BPS STAT LEDs are off.
2. Verify that the equipment type for the Litespan H2TU-C slot is AHDSL2. Using TL1,
equipment type is shown with the command RTRV-EQPT::AID, where AID is the access
identifier (i.e., COT-1-15).
3. If step 1 fails, contact Alcatel customer service (800-848-0333). If step 1 and step 2 pass,
replace the H2TU-C. If step 1 passes but step 2 fails, delete the equipment record
(i.e., DLT-EQPT::COT-1-15 with TL1) and reinsert the card, or equip the slot with the
currently reserved equipment type.
1. Confirm that the HDSL2 loop is not open.
2. Confirm that the HDSL2 loop is not shorted.
3. Verify the loop conforms to CSA guidelines and is not too long. Loop loss at 200 kHz
should be less than 35.25 dB.
4. Verify that the HDSL2 loop has acceptable noise limits (see Section 4).
5. Verify that tip and ring of the HDSL2 loop belong to the same twisted pair.
6. If steps 1 through 5 pass, but the HLOS LED remains red, replace the H2TU-C.
7. If step 6 fails, replace the H2TU-R.
1. Check that the framing and line coding are set appropriately for T1 data at the H2TU-R and
check for cross-connected T1 data coming to the H2TU-C.
2. Check that the RLOS LED at the H2TU-R is off.
3. If step 1 fails, change the appropriate framing and line coding. If step 1 passes but step 2 fails,
a problem may exist at the H2TU-R T1 interface. If subsequent testing determines that the
problem does not exist at the T1interface, replace the H2TU-C.
6. TROUBLESHOOTING PROCEDURES
Table 13 is a troubleshooting guide for the Litespan
H2TU-C.
7. PRODUCT SPECIFICATIONS
Product specifications for the ADTRAN H2TU-C are
listed in Table 14.
8. WARRANTY AND CUSTOMER SERVICE
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 at
www.adtran.com/warranty.
U.S. and Canada customers can also receive a copy of
the warranty via ADTRAN’s toll-free faxback server
at 877-457-5007.
• Request Document 414 for the U.S. and Canada
Carrier Networks Equipment Warranty.
• Request Document 901 for the U.S. and Canada
Enterprise Networks Equipment Warranty.
Refer to the following subsections for sales, support,
CAPS requests, or further information.
ADTRAN Sales
Pricing/Availability:
800-827-0807
ADTRAN Technical Support
Pre-Sales Applications/Post-Sales 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/Upgrade:
(256) 963-8722
Repair and Return Address
Contact Customer and Product Service (CAPS) prior
to returning equipment to ADTRAN.
ADTRAN, Inc.
CAPS Department
901 Explorer Boulevard
Huntsville, Alabama 35806-2807