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Compliance
The DDM+ HTU-C is NRTL Listed to the applicable UL standards for continuous use in
–40°C to +50°C environmental conditions. Care should be exercised when handling
equipment when temperatures at these extremes exist, as surfaces could be very cold or
hot.
The DDM+ HTU-C meets or exceeds all the applicable requirements of NEBS, Telcordia
GR-63-CORE and GR-1089-CORE and is evaluated to ensure proper operational performance
is maintained if environmental conditions ranging from –40°C to +71°C are encountered.
The DDM+ HTU-C is intended for deployment in Central Office type facilities, EEEs, EECs,
and locations where the NEC applies (for example, customer premises). Install the DDM+
HTU-C in the appropriate chassis, which is intended to be installed only in Restricted Access
Locations by qualified personnel.
This device complies with Part 15 of the FCC rules. Operation is subject to the following two
conditions:
1. This device may not cause harmful interference
2. This device must accept any interference received, including interference that may cause
undesired operation.
Changes or modifications not expressly approved by ADTRAN could void the user's authority
to operate this equipment.
Table 2
shows the compliance codes for the DDM+ HTU-C.
Code
Power Code (PC)
Telecommunication (TC)
Installation Code (IC)
Voltages up to –200 VDC with respect to ground may be present on
the HDSL telecommunications conductors. Voltages up to 200
VDC may be present between individual HDSL telecommunications
conductors.
Per GR-1089-CORE the HDSL System is designed and intended for
installation as part of a Common Bonding Network (CBN). The
HDSL System is not designed nor intended for installation as part
of an Isolated Bonding Network (IBN).
61247003L6-5A
Table 2. Compliance Codes
WARNING
CAUTION
Input
Output
F
C
–
X
A
–
Description
3
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