BICSI has released its Telecommunications Distribution Methods Manual (TDMM), 13th edition.

Since 1984, the TDMM has been the definitive reference manual for ITS, telecommunications and information communications technology infrastructure design. Written by industry experts serving within a vast array of industries, as well as the telecommunications infrastructure supply chain, the TDMM, 13th edition, provides critical design information and practice for today’s and tomorrow’s networks.

In addition to updating existing practices to current technology for data networks, the TDMM has incorporated new information to address the issues and solutions emerging for tomorrow’s networks. These topics include Distributed Antenna Systems (DAS), Passive Optical Networks (PON) for within buildings and IP infrastructure for AV Systems.

Emphasis has been placed on ensuring content is applicable to the designer’s needs of today. A new chapter on business development has been added, with select reductions in content applicable to the network administrator or application developer.

“As with its predecessors, the 13th edition TDMM emphasizes recommendations for best practices drawn from experts around the world,” said BICSI President Jerry L. Bowman, RCDD, NTS, RTPM, CISSP, CPP, CDCDP. “This updated edition once again provides deep reference information on the standards and codes that impact our readership. Whether the reader is a newcomer or seasoned veteran to IT infrastructure design, the 13th edition TDMM is an indispensable reference that completes any reference library.”

In addition to its worldwide use as a gold-standard industry reference, the TDMM is the basis of course and examination material for BICSI’s flagship credential, the Registered Communications Distribution Designer (RCDD), as well as the Registered Information Technology Professional (RITP) credential. Beginning July 1, 2014, BICSI will update its RCDD course and examination material to reflect the new information found in the TDMM, 13th edition. Until then, the 12th edition will still be used.

The manual is available in print and downloadable versions. More information on can be found at