Compatibility; Compliance.4; Table 1. Adtran Unit Compatibility - ADTRAN 239 T1 Installation And Maintenance Practice

239 H4R Installation and It
Compatibility
The 239 H4R is used in conjunction with any T1.418 compliant span powering H4TU-C and H4TU-R. Compatible
ADTRAN HDSL4 transceiver units are listed in Table 1.
Table 1. ADTRAN Unit Compatibility
Part Number
11814bcLy
122x401Ly
122x403Ly
122x404Ly
122x407Ly
122x424Ly
\22x426Ly
Unit Name
Total Access 3000 H4TU-C
220 H4TU-C
DDM+ H4TU-C
3192 H4TU-C
Soneplex H4TU-C
T200 H4TU-R, Local Power
T200 H4TU-R, Span Power
Due to span power limits, the number of H4Rs permitted in the circuit depends upon the type of H4TU-C utilized.
An ADTRAN 239 H4R provides DS1 transport on all revised resistance design (RRD) 26 AWG and/or 24 AWG
loops. Three ADTRAN 239 H4R repeaters may be added to extend the range of a loop.
Repeater placement is determined by the following criteria:
• On single H4R loops, only on the attenuation properties of the loop segment must be considered.
• For a circuit requiring two H4Rs, both segment attenuation as well as segment DC resistance requirements be
satisfied.
• For a circuit requiring three H4Rs, H4TU-C and H4TU-R hardware requirements, segment attenuation, and
Refer to the "HDSL4 Deployment Guidelines" on page 6 of this practice and the Installation and Maintenance
Practice for the deployed H4TU-C.
Compliance
Table 2 shows tbe compliance codes for the 239 H4R. The 239 H4R is NRTL listed to the applicable UL standards.
The 239 H4R is to be installed in a restricted access location and in a Type "B" or "E" enclosure only.
Table 2. Compliance Codes
61223445L1-5D