TY - BOOK ID - 14232739 TI - IEEE Std 269a-2012 (Amendment to IEEE Std 269-2010) PY - 2012 SN - 0738172634 PB - [Place of publication not identified] : IEEE, DB - UniCat KW - Telephone KW - Equipment and supplies. KW - Echo suppressors. UR - https://www.unicat.be/uniCat?func=search&query=sysid:14232739 AB - Abstract: 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 communications devices. Measurement results may be used to evaluate these devices on a standardized basis. Application is in the frequency range from 100 Hz to 8500 Hz. Keywords: analog telephones, digital telephones, electroacoustic measurements on telephones, handsets, headsets, IEEE 269, IEEE 269a, telephony, voice transmission performance. ER -