269-1983 IEEE Standard Method for Measuring Transmission Performance of Telephone Sets

inactive - Superseded by 269-1992
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Organization: IEEE - Institute of Electrical and Electronics Engineers, Inc.
Publication Date: 7 December 1983
Status: inactive
Page(s): 1 - 26
ISBN (Online): 978-1-5044-0245-3
DOI: 10.1109/IEEESTD.1983.7393411

Abstracts

Regular

The purpose of this standard is to describe a practical method for measuring the transmission characteristics of a telephone set by means of objective measurements on a test connection. The test results thus obtained may be used as a means of evaluating or specifying the transmission performance of a telephone set on a standardized basis. The basic accuracy and reproducibility of measurements made in accordance with this standard will depend primarily upon the accuracy of the test equipment used, the care with which the measurements are conducted, and the inherent stability of the telephone set or transducers under test, or both. Where a given set of measurements is repeated in the same laboratory and by the same operator, a relatively high degree of reproducibility should normally be obtained. However, when comparing measurements made by different laboratories, allowances should be made for the influencing factors mentioned above.

Standard

The methods that are used to measure telephone-set transmission performance may be divided into two classes: objective methods and subjective methods. The objective methods, which are those discussed in this standard, utilize a sound source resembling the human mouth to drive the transmitter, and an acoustic coupler resembling the human ear as a termination for the receiver. The sound source comprises a source of electrical energy and a moving-coil loudspeaker unit having supplementary electrical and acoustical components which produce a sound field simulating that of a typical human voice. This special loudspeaker is referred to as an artificial mouth. The acoustic coupler comprises a microphone and a terminating air volume having supplementary acoustic components which produce a load on the receiver simulating that of a typical human ear.This coupler is referred to as an artificial ear. The artificial mouth and ear are useful in comparing the performance of telephone sets at frequencies in the significant portion of the speech range.

Document History

269a-2012 - IEEE Standard Methods for Measuring Transmission Performance of Analog and Digital Telephone Sets, Handsets, and Headsets--Amendment 1
May 31, 2012 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Practical methods for making laboratory measurements of electroacoustic characteristics of analog and digital telephones, handsets, and headsets are presented. The methods may also be applicable to a wide variety of other communications equipment, including cordless, wireless, and mobile communicati...

P269a/D5.2, Jan 2012 - IEEE Draft Standard Methods for Measuring Transmission Performance of Analog and Digital Telephone Sets, Handsets, and Headsets - Amendment 1
January 19, 2012 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Practical methods for making laboratory measurements of electroacoustic characteristics of analog and digital telephones, handsets and headsets. The methods may also be applicable to a wide variety of other communications equipment, including cordless, wireless and mobile communications devices. Mea...

P269a/D5.0, Nov 2011 - IEEE Draft Standard Methods for Measuring Transmission Performance of Analog and Digital Telephone Sets, Handsets, and Headsets - Amendment 1
November 29, 2011 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Practical methods for making laboratory measurements of electroacoustic characteristics of analog and digital telephones, handsets and headsets. The methods may also be applicable to a wide variety of other communications equipment, including cordless, wireless and mobile communications devices. Mea...

269-2010 - IEEE Standard Methods for Measuring Transmission Performance of Analog and Digital Telephone Sets, Handsets, and Headsets - Redline
August 26, 2010 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Practical methods for making laboratory measurements of electroacoustic characteristics of analog and digital telephones, handsets and headsets. The methods may also be applicable to a wide variety of other communications equipment, including cordless, wireless and mobile communications devices. Mea...

269-2010 - IEEE Standard Methods for Measuring Transmission Performance of Analog and Digital Telephone Sets, Handsets, and Headsets
August 26, 2010 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Practical methods for making laboratory measurements of electroacoustic characteristics of analog and digital telephones, handsets and headsets. The methods may also be applicable to a wide variety of other communications equipment, including cordless, wireless and mobile communications devices. Mea...

P269R/D9.0, Sept 2009 - IEEE Draft Standard Methods for Measuring Transmission Performance of Analog and Digital Telephone Sets, Handsets, and Headsets
January 1, 2009 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Practical methods for making laboratory measurements of electroacoustic characteristics of analog and digital telephones, handsets and headsets are covered in this standard. The methods may also be applicable to a wide variety of other communications equipment, including cordless, wireless and mobil...

P269R/D9.2, Nov 2009 - IEEE Draft Standard Methods for Measuring Transmission Performance of Analog and Digital Telephone Sets, Handsets, and Headsets
January 1, 2009 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Practical methods for making laboratory measurements of electroacoustic characteristics of analog and digital telephones, handsets and headsets. The methods may also be applicable to a wide variety of other communications equipment, including cordless, wireless and mobile communications devices. Mea...

269a-2007 - IEEE Standard Methods for Measuring Transmission Performance of Analog and Digital Telephone Sets, Handsets, and Headsets Amendment 1
September 7, 2007 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

This document amends IEEE Std 269-2002. It covers the areas of: analog telephones; digital telephones; electroacoustic measurements on telephones; handsets; headsets; telephony; and voice transmission performance.

P269a_D8 - IEEE Draft Standard Methods for Measuring Transmission Performance of Analog and Digital Telephone Sets, Handsets, and Headsets Amendment 1
January 1, 2006 - IEEE - Institute of Electrical and Electronics Engineers, Inc.
A description is not available for this item.
269-2002 - IEEE Standard Methods for Measuring Transmission Performance of Analog and Digital Telephone Sets, Handsets, and Headsets
January 1, 2003 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Practical methods for making laboratory measurements of electroacoustic characteristics of analog and digital telephones, handsets, and headsets are provided in this revised standard. The methods may also be applicable to a wide variety of other communications equipment, including cordless, wireless...

ST 269:1999 - For Television — Fault Reporting in Television Systems
April 21, 1999 - Society of Motion Picture and Television Engineers

This standard describes a simple interface over which television equipment can report the occurrence of internal failures and faults in incoming signals. It is intended for use in all television equipment, from the simplest active devices to the most complex. - The interface consists of an is...

269-1992 - IEEE Standard Methods for Measuring Transmission Performance of Analog and Digital Telephone Sets
January 1, 1993 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Practical methods for measuring the transmission characteristics of both digital and conventional two-wire analog telephone sets by means of objective measurements on a test connection are described. The test results thus obtained may be used as a means of evaluating or specifying the transmission p...

269-1983 - IEEE Standard Method for Measuring Transmission Performance of Telephone Sets
December 7, 1983 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

The methods that are used to measure telephone-set transmission performance may be divided into two classes: objective methods and subjective methods. The objective methods, which are those discussed in this standard, utilize a sound source resembling the human mouth to drive the transmitter, and an...

269-1971 - IEEE Standard Method for Measuring Transmission Performance of Telephone Sets
October 1, 1971 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

The methods that are used to measure telephone-set transmission performance may be divided into two classes: objective methods and subjective methods. The objective methods, which are those to be discussed in this standard, utilize a sound source resembling the human mouth to drive the transmitter, ...

269-1966 - IEEE Proposed Method for Measuring Transmission Performance of Telephone Sets
May 17, 1966 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

The purpose of this Standard is to describe a practical and reproducible method for measuring the transmission characteristics of a telephone set, and the components thereof, by means of objective measurements in a test connection. Performance characteristics obtained using this method will approxim...

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