Union internationale des tlcommunications Place des Nations 1211 GENEVE 20 Suisse Switzerland Suiza 瑞士 COVERING NOTE GENERAL SECRETARIAT OF THE INTERNATIONAL TELECOMMUNICATION UNION Geneva, 1 March 2013 ITU TELECOMMUNICATION STANDARDIZATION SECTOR Subject: Erratum 1 ( 03/2013) to Recommendation ITU-T H.120 (03/1993), Codecs for videoconferencing using primary digital group transmission 1) Clause 1.4.1.3.2, Quantization law and variable-length coding, contains an error message caused by a typographical error. In clause 1.4.1.3.2, delete the phrase: Error! Cannot open file.