ADTRAN 1200350L1 - Manual (Page 22)

Chapter 1: Introduction
1-4 Router Option Module User Manual 61200350L1-1
Warranty and Customer Service
ADTRAN will replace or repair this product within five years from
the date of shipment if it does not meet its published specifications
or fails while in service. For detailed warranty, repair, and return
information refer to the ADTRAN Equipment Warranty and Repair
and Return Policy Procedure.
Return Material Authorization (RMA) is required prior to returning
equipment to ADTRAN.
For service, RMA requests, or further information, contact one of the
numbers listed on the inside back cover of this manual.