ADTRAN TSU 120e - Manual (Page 13)

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WARRANTY AND CUSTOMER SERVICE
ADTRAN will replace or repair this product within five years from the date
of shipment if the product does not meet its published specifications or if it
fails while in service. For detailed warranty, repair, and return information,
see the ADTRAN Equipment Warranty and Repair and Return Policy Proce-
dure.
Return Material Authorization (RMA) is required prior to returning equip-
ment to ADTRAN.
For Service, RMA requests, or more information, contact one of the numbers
found at the inside back page of this manual.