Here is a look at the telecom cabling standards currently under development at the TIA.
January 1, 2002
The latest Telecommunications Industry Association (TIA) meetings were held in November 2001 at the Fairmont Hotel in Dallas, Texas. Following is an overview of the telecom cabling standards developments currently underway in the various subcommittees under TIA TR-42:
TR-42.1 – COMMERCIAL BUILDING CABLING
A new addendum is under development that will provide supportable distances and channel attenuation for optical fiber applications by fiber type. The purpose of this addendum is to replace the existing table E-1 of ANSI/TIA/EIA-568-B.1.
Comment resolution on the Building Automation Systems (BAS) standard, SP-3-4655, was also completed. Every effort was made to accommodate comments received from the control systems experts. This document will be going out for a subsequent industry ballot.
TR-42.2 – RESIDENTIAL TELECOMMUNICATIONS INFRASTRUCTURE
A new proposal on audio systems for residences was submitted during the meetings. This is the subject of a new addendum and will be going out for a first ballot.
Ballot comments were reviewed and resolved for the addendum on security systems. The document will go out for a default ballot to approve a limited number of technical changes.
TR-42.3 – COMMERCIAL BUILDING TELECOMMUNICATIONS PATHWAYS AND SPACES
A new Addendum 7 to ANSI/TIA/EIA 569-A on Cable Tray Fill was approved for publication.
TR-42.4 – CUSTOMER-OWNED OUTSIDE PLANT TELECOMMUNICATIONS INFRASTRUCTURE
The subcommittee considered a request from the industry on the installation of Optical Fiber OSP cables into sewer systems. A letter of reply was formulated advising ASTM that ICEA would be the organization to develop the design, material, mechanical and environmental requirements for such a cable.
TR-42.6 – TELECOMMUNICATIONS INFRASTRUCTURE AND EQUIPMENT ADMINISTRATION
The ballot comments on the draft TIA/EIA 606-A standard were reviewed during the meetings. There are still some unresolved issues to be discussed at a subsequent teleconference. Depending on the outcome, the document will go out for a full ballot or a default ballot. The items that remain to be resolved are campus and backbone cabling labels and hand-written labels.
TR-42.7 – TELECOMMUNICATIONS COPPER CABLING SYSTEMS
The subcommittee completed a review of all the ballot comments for the Category 6 draft 9 Addendum. The editor will incorporate the agreed upon changes, including a new jack vector for plug qualification testing.
SP-3727 – Addendum 1 to TIA/EIA 568-B.2, Draft 10 of the proposed Category 6 standard will be going out for another ballot on December 6, 2001. The ballot comments that are received will be reviewed during the next TIA meeting in February 2002. Any technical changes to the document at that time will require a “default ballot” as a minimum. This means final approval would be delayed until June 2002. If there are no technical changes, the Category 6 standard could be approved as early as March 2002.
The issues that are still unresolved in the existing document relate to connecting hardware and patch cord testing, which are component requirements. The channel and link requirements have been stable for the last two or three ballot cycles and are unlikely to change.
TR-42.8 – TELECOMMUNICATIONS OPTICAL FIBER CABLING SYSTEMS
A new working group was formed on OF polarity for array connectors. There is intent to publish the result of this work as a new Telecommunications Systems Bulletin (TSB)
Addendum 1 to 568-B.3 on next generation fiber (10 Gb/s) will be going out for another industry ballot. This addendum was previously held up while awaiting completion of laser bandwidth measurement procedures, which are now in place.
TR-42.9 – INDUSTRIAL TELECOMMUNICATIONS INFRASTRUCTURE
A working document is in progress for Industrial process control cabling and pathways and spaces. CENELEC, a European standards body, has expressed interest via a liaison letter on the work in progress. There is also a request from the cabling experts in TR-42.7 and TR-42.8 to become more involved in the development of cabling specifications.
Paul Kish is Director of IBDN Systems & Standards at NORDX/CDT in Pointe Claire, PQ. He is also Chair of the TR-42 engineering committee.
Disclaimer: The information presented is the author’s view and is not official TIA correspondence.