Adtran DSU 56 Manual Do Utilizador

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ADTRAN will replace or repair this product within five years from the date of ship-
ment if the product does not meet its published specification, or if it fails while in ser-
vice. 

A return material authorization (RMA) is required prior to returning equipment to 
ADTRAN. For service, RMA requests, training, or more information, see the toll-free 
contact numbers given below.

Please contact your local distributor, ADTRAN Applications Engineering, or ADT-
RAN Sales:

Please contact your local distributor first. If your local distributor cannot help, please 
contact ADTRAN Technical Support and have the unit serial number available.

The Custom Extended Services (ACES) program offers multiple types and levels of ser-
vice plans which allow you to choose the kind of assistance you need. For questions, 
call the ACES Help Desk. 

If ADTRAN Technical Support determines that a repair is needed, Technical Support 
will coordinate with the Custom and Product Service (CAPS) department to issue an 
RMA number. For information regarding equipment currently in house or possible 
fees associated with repair, contact CAPS directly at the following number:

Applications Engineering (800) 615-1176

Sales

(800) 827-0807

Technical Support

(888) 4ADTRAN

ACES Help Desk

(888) 874-2237 

CAPS Department

(256) 963-8722