Telecommunications Industry Association
(TIA)
Via Teleconference
TR-30.2/11-11-013
November 16, 2011
DOCUMENT SUBMITTED TO
TR-30.2 Meeting
The document to which this cover statement is attached is submitted to a Formulating Group or sub-element thereof
of the Telecommunications Industry Association (TIA) in accordance with the provisions of Sections 6.4.1-6.4.6
inclusive of the TIA Engineering Manual dated October 2009, all of which provisions are hereby incorporated by
reference.
SOURCE:
TR-30.2 Chair
CONTACT:
Fred Lucas
FAL Associates
Email: fred.lucas@ieee.org
TITLE:
Press Release for ANSI/TIA-4963
PROJECT:
PN-3-4963
DISTRIBUTION:
Members of TR-30.2
INTENDED PURPOSE OF
DOCUMENT:
____
FOR INCORPORATION INTO A TIA PUBLICATION
_X__ FOR INFORMATION ONLY
____
OTHER (please describe):
____________________
ABSTRACT
Attached is a copy of the Press Release the TIA release on October 14, 2011 regarding the initiation of
Standards Project PN-3-4963, Electrical Characteristics of Reversible Balanced Voltage Digital Interface
Circuits
October 14, 2011
FOR IMMEDIATE RELEASE
CONTACT: MIKE SNYDER
+1.703.907.7723
msnyder@tiaonline.org
TIA Initiates New Standards Project on Electrical Characteristics of Reversible
Balanced Voltage Digital Interface Circuits
TIA Invites Industry Participation in Development of New Technology Standards
Arlington Va. – The Telecommunications Industry Association's (TIA) Engineering Committee for Multi-Media Access, Protocols and
Interfaces has initiated a new standards development project on the electrical characteristics of reversible balanced voltage digital
interface circuits.
The project, ANSI/TIA-PN-4963, is being developed by subcommittee of TIA's TR-30 Multi-Media Access, Protocols and Interfaces
Engineering Committee's TR-30.2 Subcommittee for DTE-DCE Interfaces. TR-30.2 recently released the scope and justification for
the project, which will be an enhanced version of the TIA-485-A standard, Electrical Characteristics of Balanced Voltage Digital
Interface Circuits.
"TIA-485-A has served the industry for many years providing a balance electrical characteristic interface for many communications
applications," said TR-30 Chair Fred Lucas of FAL Associates. "One of the problems encountered with the interface was the
possibility that the balanced interface cable could be reversed resulting in an inoperative interface. This project was initiated to
develop a new balanced interface which will self-correct for improper cabling as well as provide a modern version of TIA-485-A. The
new electrical characteristic, to be call ANSI/TIA-4963, is expected to be approved in late 2012."
The new standard recognizes that generators and receivers are immune to the interchange of binary signals in multipoint
interconnection of digital equipment. When implemented within the guidelines of the new standard, multiple generators and
receivers may be attached to a common interconnecting cable. The generators and receivers operate with no errors if the balanced
interconnecting cables are connected normally or with the differential signal wires reversed.
Users will be able to reference ANSI/TIA-4963 for the point-to-point interchange of binary signals between equipment and
components at signaling rates up to 5 Mbps over a single differential transmission. Higher rates and different transmission line
impedance are possible in optimal application.
To inquire about participating in TIA standards developing efforts, please contact Germaine Palangdao at +1.703.907.7497 or at
gpalangdao@tiaonline.org.
Learn more about TIA standards development at tiaonline.org/standards/
Sign up for news feeds on new TIA standards projects and publications.
About TIA
The Telecommunications Industry Association (TIA) represents the global information and communications technology (ICT)
industry through standards development, advocacy, business opportunities, market intelligence and networking. Since 1924, TIA
has been enhancing the business environment for broadband, mobile wireless, information technology, networks, cable, satellite
and unified communications. Members' products and services empower communications in every industry and market, including
healthcare, education, security, public safety, transportation, government, the military, the environment and entertainment. Visit
tiaonline.org.
TIA is accredited by the American National Standards Institute (ANSI).
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TIA's 2011 Market Review & Forecast, is available for purchase online at the TIA store. TIA members receive a discount of more
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TIA's Board of Directors includes senior-level executives from ADTRAN, Alcatel-Lucent, ANDA Networks, AttivaCorp, Cisco
Systems, Dow Chemical Company, Ericsson, Inc., GENBAND, Inc., Henkels & McCoy, Juniper Networks, ILS Technology, Intel
Corporation, Intersect, Inc., LGE, Microsoft, Motorola, Nokia Siemens Networks, OneChip Photonics, Panasonic Computer
Solutions Co., Qualcomm, Research In Motion, Sumitomo Electric Lightwave Corporation, Tellabs, TE Connectivity, Ulticom, Inc.,
Walker & Associates and WirefreeCom, Inc. Advisors to the Board include FAL Associates.
For more information about this press release or other TIA news, please contact TIA PR Director Mike Snyder at msnyder@tiaonline.org