ADTRAN NT1 T400 - Manual (Page 15)

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6 NT1 T400 User Manual 61212016L1-1
4.0 MAINTENANCE
The ADTRAN NT1 Type 400 requires no routine maintenance to
operate. In case of equipment malfunction, refer to Sections 5.0
and 6.0 below, and/or remove the unit and replace it with another
unit optioned in an identical manner.
5.0 REMOTE TESTING
Network test features include a loopback test initiated at the cen-
tral office. This test confirms network integrity to the NT1 Type
400.
6.0 REPAIR AND RETURN
Repairs should not be performed in the field. Repair services can
be obtained by returning the unit to the ADTRAN Customer and
Product Service (CAPS) Department at the address listed in the
back of this manual.